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Performance Bicycle Glossary

Bicycle Glossary Diagram

  1. Saddle
  2. Seatpost
  3. Brakes
  4. Wheel includes: rim, spokes and hub
  5. Rear Derailleur
  6. Front Derailleur
  7. Crankset/Bottom Bracket
  8. Pedals
  9. Headset
  10. Stem
  11. Handlebar
  12. Shifters/Brake levers
  13. Fork




  1. Saddles

    There are many different varieties of saddles. Racing saddles are narrower and weigh less. Comfort saddles are wider and heavier. There are different saddles for men and women. Men's saddles are usually narrower and longer than women's saddles, which are wider and short.

  2. Seatpost

    This connects the saddle to the frame. Seatposts can be made from aluminum, carbon fiber, titanium or steel, aluminum being the most common. Seatpost size is determined by measuring the diameter of the post. Most seatposts have the size etched on, located just below the minimum insertion line (i.e. 27.2).

  3. Brakes

    There are four different types of brakes: Caliper (road), Cantilever, Linear Pull or V-Brakes, and Disc. Caliper brakes are found most often on road bikes and mount with a single bolt located in the center of the brake. Cantilever brakes are most often found on mountain bikes, hybrids and Cyclocross bikes. Cantilever brakes mount to posts located on the frame and fork. The cable attached to the brake looks like an upside down "Y." Linear side-pull (V-brakes) also mount to posts and found on he same bikes as Cantilever brakes. With Linear side-pull brakes the cable goes through a metal tube attached to one brake arm. Disc brakes come in basically two types: hydraulic and mechanical. Disc brakes mounts are located on the frame near the dropouts and near the bottom of the fork leg.

  4. Wheels

    A Wheel is made up of a rim, spokes and a hub. Rims come in basically four different sizes:
    • 700c----- Most new road bikes, built after 1990, including Hybrids
    • 650c----- Women's specific road bikes and Triathlon bikes
    • 27"------- Older less expensive road bikes, most made before 1990
    • 26"------- Nearly all mountain bikes and some "comfort" bikes

    *Tires must be the same size as the rim. 700c rims mean 700c tires, 27" rims mean 27" tires, etc.

    The two most common rear hubs are freewheel hubs and cassette hubs. With freewheel hubs the cogset (freewheel) is all one piece and is threaded directly onto the hub. With cassette hubs the cogset (cassette) is separate and slides onto the hub and held in place by a lockring.

    Spokes come in a two different styles: straight gauge and double butted. Straight gauge spokes are a single thickness. Double-butted spokes are two thicknesses, thick on the ends and thinner in the middle.

  5. Rear Derailleur

    Used to guide the chain from cog to cog on the rear cassette. Rear derailleurs come in different cage lengths. Long cages rear derailleurs are for bikes with Triple cranksets. Short cage derailleurs are for bikes with Double cranksets.

  6. Front Derailleur

    Used to guide the chain from chainring to chainring, the front derailleur has a few distinctions: mount type (Braze-on, E-Type or Clamp-on), pull (top or bottom) and swing (top or bottom). Braze-on front derailleurs bolt directly to the frame. Clamp-on front derailleurs have a clamp that goes around the seat tube and tightens with a bolt. The E-type front derailleur mounts to the bottom bracket.

    Pull is from what direction the cable comes to the derailleur:

    • Top-pull = cable comes from above the derailleur
    • Bottom-pull = cable comes from under the derailleur

    Swing refers to where the derailleur cage pivots:

    • Top-swing = cage pivots above the clamp
    • Bottom-swing or traditional = cage pivots below the clamp

  7. Crankset and Bottom Bracket

    A Crankset consists of two crank arms and either two (double) or three (triple) chainrings. The bottom bracket connects the crankset to the frame. Bottom bracket consists of bearings, cups and a spindle. There are two different spindle styles: square taper and splined.

    -Shimano square taper-will not work with Campagnolo -Campagnolo square taper- will not work with Shimano -Shimano Octi-link Version 1- XTR and Road -Version 2- XT and LX -ISIS Splined- will only work with ISIS cranks, no Shimano

  8. Pedals

    There are basically two types of pedals, platform (with or without toe clips) and clipless. Platform pedals do no require a special cycling shoe. Clipless pedals are sold with cleats that mount to the bottom of a cycling shoe. These cleats come in various bolt patterns: LOOK, SPD, TIME or SPD-R. See Bolt Pattern Chart.

  9. Headset

    This is the set of bearings and cups that connect the frame to the fork and allow you to steer a bike. There are two types of headsets: threaded and threadless. Threaded headsets have two lock nuts threaded directly to the fork used for adjusting. The threadless headsets use a bolt and a star-fangled nut to adjust. The star-fangled nut is located inside the steerer tube of the threadless fork.

  10. Stem

    There are two different types of stems: threaded (quill) and threadless. Threaded stems have a quill that slides into the steerer and is tightened via a bolt and wedge. Threadless stems clamp directly to the steerer tube and are tightened by one or more bolts. Stems consist of two measurements: length and diameter. The length is measure along the stem, from the center of the quill or steerer clamp to the center of the handlebar clamp. The diameter of the stem refers to the steerer tube of the fork it fits with.

    -Threadless 1"diameter steerer = 1" diameter stem -Threadless 1 1/8" diameter steerer = 1 1/8" diameter stem -Threadless 1 1/4" diameter steerer = 1 1/4" diameter stem

    -Threaded 1" diameter steerer = 7/8" actual stem diameter (order 1") -Threaded 1 1/8" diameter steerer = 1" actual stem diameter (order 1 1/8") -Threaded 1 1/4" diameter stem = 1 1/8" actual stem diameter (order 1 1/4")

    **See Fork for description of steerer tube

  11. Handlebar

    The cockpit of the bike, handlebars come in a variety of different styles. Road bikes come with Drop-bars; these bars have a flat sections with two hooked areas that drop below the flat portion of the bar. These bars must be mounted to a road stem. Mountain bikes primarily have one of two bars, either flat bars or riser bars. Flat bars are flat across the bar but sweep back towards the rider. Riser bars sweep back towards the rider as well, except they also rise up from the stem.

  12. Shifters and brake levers

    Modern road bikes are equipped with either Shimano STI or Campagnolo Ergo levers. These levers integrate shifters and brake levers into one unit. Older bikes are equipped with downtube shifters and separate brake levers. The downtube shifters are mounted the frame located just above the waterbottle. Touring bikes are sometimes equipped with bar end or "Bar Con" shifters. These shifters mount into the ends of the handlebar.

    Mountain bikes offer a wider variety of brake and shift lever combinations. They can either be integrated with the brake and shift levers mounted together or separate. The two most common shifters are Shimano Rapid Fire and Sram GripShift.

  13. Fork

    There are two types of forks: suspension and rigid. Suspension forks offer travel much like a motorcycle and are found mostly on mountain bikes. Rigid forks have no travel and come in many different materials: Carbon, Aluminum and Chro-moly. Forks have two different measurements: steerer diameter and steerer length. The steerer tube is the part of the fork that inserts into the frame.

    -Steerer diameter = outside diameter of the steerer tube
    -Steerer length = length of steerer tube from crown to top of steerer tube

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Section 1.2: Cycling Glossary

Adjustable cup: left-hand cup in a non-sealed bottom bracket, used in adjusting the bottom bracket bearings and removed during bottom bracket overhaul.

Aero levers: road bike brake levers employing hidden cables that travel out the back of the level body and under the handlebar tape

AheadSet---a type of headset that fits on a fork that has a non-threaded steerer such as is found on many mountain bikes.

Allen key (Allen wrench): a small L-shaped hexagonal wrench that fits inside the head of an Allen bolt or screw

All-Terrain Bike (ATB): term sometimes used for mountain bike

Bar ends: mini handlebar add-ons that fit on the ends of mountain bike bars to add another riding position

Binder bolt: bolt used to fasten a stem inside a steerer tube or a seatpost inside a seat tube or a handlebar inside a stem

BMX: Bicycle Moto Cross: a type of racing done on a closed dirt track over obstacles usually on 20-inch wheel bikes with one gear

Bonk: what happens when you don't eat and drink enough

Bottom Bracket--- the crank axle, two sets of ball bearings, a fixed cup, and an adjustable cup. Newer bottom brackets are sealed cartridges with no adjusting cup and two fixing cups. Size refers to shell width and spindle length

68 x 113= Shell width of 68mm and spindle length of 113mm

Bottom Bracket Shell: the cylindrical part of a bicycle frame that holds the crank axle, two sets of ball bearings, a fixed cup, and an adjustable cup

Brake pad: a block of rubber-like material fastened to the end of a brake caliper; it presses against the wheel rim when the brakes are applied

Brake shoe: the metal part that holds a brake pad and is bolted to the end of a brake caliper

Braze-ons: parts for mounting shift levers, derailleurs, water bottle cages, and racks, which are fastened to a steel bicycle frame through a type of soldering process known as brazing, bonded or welded to aluminum, carbon and titanium frames

Bushing----a sleeve that fits between two parts to act as a bearing; often found in suspension systems and some pedals

butted tubing (internal): tubing whose outside diameter remains constant but whose thickness is reduced in midsection

cable end (cap): a small aluminum or plastic cap installed to the ends of brake and shift cables to keep them from fraying

cage: on a front derailleur, a pair of parallel plates that push the chain from side to side; on a rear derailleur, a set of plates in which pulleys are mounted to hold and guide the chain from cog to cog

calipers: brake arms that reach around the sides of a wheel to press brake pads against the wheel rim

cantilever brakes: rim brakes with pivoting arms mounted on fork blades or seatstays, the cable coming to the brake looks like an upside-down "Y"

cassette hub: a type of rear hub that has a built-in freewheel mechanism and the gears slide on and are held on by a lockring

chain: a series of links pinned together that connects the chainwheel(chainrings) to the cogs(cassette) on the back wheel

Chainring: a sprocket attached to the right crankarm (drive-side) to drive the chain

Chainring nut spanner: a special tool used to loosen the slotted chainring bolts (the ones behind the inner ring) that fasten a chainring to a crankarm

Chainstays: the two tubes of a bicycle frame that run from the bottom bracket back to the rear dropouts

Chainwheel: see chainring

Chain whip (chain wrench): a tool consisting of a metal bar and two sections of chain, used in changing cogs on a cassette

chrome moly, CRO-MO, Chromoly (chrome molybdenum): a type of high-quality steel tubing

clincher tire (also known as "hooked" tire): a tire whose edges hook under the curved-in edge of a rim

clipless pedals: pedals that use a releasable mechanism like that of a ski binding to lock onto cleated shoes and do not require the use of toe clips or straps

coaster brake: a foot-operated brake built into the rear hub normally found on one-speed kids' bikes and cruisers

cog: a sprocket attached directly to the rear hub on a single-speed bike and mounted on a cassette on a multi-speed bike

cone: a bearing race that curves to the inside of a circle of ball bearings and works in conjunction with a cup

cottered crank: a crankset in which the crankarms are fastened to the axle by means of threaded cotters pins and nuts

cotterless crank (three piece): a crankset in which the crankarms are fastened to the axle by means of a taper and nuts or bolts (instead of cotters). Newer crank are mounted to a splined bottom bracket spindle

crankarm: a part, one end of which is attached to the bottom bracket axle and the other holds a pedal, whose forward rotation provides the leverage needed to power the bicycle

crankarm bolt: the bolt that holds a crankarm on the end of the axle on a cotterless crankset

crankset: includes two crankarms, and one or more chainrings

crossover cable: the cable that links two sides of a centerpull-type brake

cross (2,3 or 4): a wheel lacing patterns

Cross-country bike (XC): a mountain bike suited to racing cross-country; features include wide-range gearing, at least front suspension, brakes and a light performance-oriented frame

cruiser (beach cruiser): a bike designed for casual and comfortable road riding that features a relaxed frame, fat 26-inch tires, a wide saddle, wide handlebars and rubber pedals

C-spanner: a wrench whose end is C-shaped, used to loosen the lockring on certain bottom brackets and headsets

damping: the process of controlling suspension action, without which a suspended fork would bounce like a pogo stick

derailleur: a lever-activated mechanism that pushes the chain off of one sprocket and onto another

diamond frame: the traditional men's bicycle frame, the principal parts of which form a diamond shape

dish: offsetting of the hub in a rear wheel on a derailleur bike to make room for the cassette and still allow the rim to be centered within the frame

double-crown fork----a type of suspension fork that resembles a motorcycle fork due to crowns above and below the head tube, which increase stiffness

Downhill bike: a bike designed for racing down mountains; features include long-travel dual suspension frame, great brakes, long saddle and riser handlebars

down tube: the frame tube running from the headset to the bottom bracket, one part of the main triangle on a bicycle frame

down tube shift levers: shift levers that are mounted to the down tube of the bike

Drivetrain: the derailleurs, chain, freewheel or cassette, and crankset of a bike

drop (frame): the vertical distance from the horizontal line connecting the two wheel axles and the bottom bracket, one way of determining the location of the bottom bracket in relation to the rest of the bicycle frame

dropout: a slot in the frame into which the rear wheel axle fits (see fork tips)

dropout hanger (derailleur hanger): a threaded metal piece that extends below the right rear dropout, used as a mount for the rear derailleur

drops: the lower, straight portion of a turned-down-type handlebar

dual-suspension bike: a bike with front and rear suspension

Dustcap: a metal or plastic cap that fits into a hub shell to keep contaminants out of hub bearings; a metal or plastic end cover for a axle in a pedal or a cotterless crankset

Elastomer: usually a urethane material used in suspensions to provide shock absorption, favored due to its low cost and simple maintenance requirements

End plugs: the caps that fit onto or into the ends of the handlebars

Ergopower levers: the name for Campagnolo's shifter/brake lever combination

face: to shave the outer edges of a bottom bracket shell or the upper and lower ends of a head tube to make them parallel with one another and square to the tube's centerline so that when the bottom bracket and headset are installed the bearings will run as smoothly as possible

ferrules: removable, cylindrical metal caps used to secure the ends of cable housing

fixed cup: the right-hand cup in a bottom bracket

Fixed gear: a cog attached to a hub without a freewheel; it always turns with the wheel---no coasting

fixed wheel: same as fixed gear, the kind of rear wheel found on track bikes

fixing bolt (crankbolt): a bolt used to hold a crankarm on an axle in a cotterless crankset

flange: the parts of a hub shell to which spokes are attached Fork (front fork): the part of the bicycle that fits inside the headtube and holds the front wheel; a term also sometimes applied to the part of the frame where chainstays and seatstays join to hold the rear axle

fork blades: the parallel, sometimes curved tubes that hold the front wheel

fork crown: the horizontal piece on the upper part of the front fork to which the fork blades attach

fork rake (rake): the shortest distance between the front axle and an imaginary line extending through the head tube downward toward the ground

fork tips: the slotted tips of the fork blades into which the front wheel axle fits

Freeride bike: a type of mountain bike (offered by many companies) that marries cross-country compatible components with a long-travel suspension frame

freewheel: a removable component on the rear hub; it carries gear cogs on the outside and contains a ratcheting mechanism inside that allows the wheel to rotate forward while the pedals, chain, and gear sprockets remain still or move in reverse

friction shifters: conventional (non-indexed) levers that retain their position through the use of friction washers

front triangle (main triangle): a quadrilateral with one short side, it is the section of a bicycle frame that consists of the head tube, the top tube, the seat tube, and the down tube

gas: the air or nitrogen trapped in a cylinder that acts as a spring in some suspension systems

gear: one position on a drivetrain, for example: being on the largest chainring and smallest rear cog is the largest gear

gooseneck: slang for stem

granny gear: colloquial term for the tiny inner chainring on a triple chainring crankset

grips: the rubber or foam sleeves that fit on the ends of upright handlebars

Headset: the combination of cups, cones, and ball bearings that creates the bearing mechanism that allows the fork column to rotate inside the head tube so you can steer

head tube: the shortest tube in the main triangle, the one in which the fork column rotates

housing: the plastic covered tubing the cables run inside

Hub: the center of a wheel consisting of a shell to which spokes attach and contains an axle along with two sets of bearings, bearing cones, lock washers, locknuts, and parts for attaching the wheel to the frame

hub brake: any type of brake (disc, drum, or coaster) that operates through the wheel hub rather than the rim

hydraulic brake: a brake relying on a sealed fluid system instead of a cable for operation

IMBA: International Mountain Bicycling Association (this organization protects trails)

index shifters: levers that "click" into distinct positions that correspond to certain cassette cogs and don't require fine-tuning after each shift

jockey pulley: the pulley in a rear derailleur that stays closest to the cogs and guides the chain from cog to cog during a gear shift

knobby tires: heavy-duty tires with large rubber knobs spaced to provide traction in wet, muddy terrain

ladies' frame: the type of frame in which the top tube is replaced by a second down tube to make mounting and dismounting the bike easier

left-hand thread (reverse threaded): threading that's the opposite of regular thread meaning you must turn left to tighten and right to loosen; always found on the left pedal

locknut: a nut used along with a washer or a second nut to lock a mechanism in place, such as the nut at the upper end of a headset and in front of the calipers on some caliper brakes

lockring: the notched ring that fits on the left side of some bottom brackets and prevents the adjustable cup from turning

lock washer: a washer with a small metal tang to prevent it from turning, such as the washer beneath the locknut on a headset or between the locknut and cone on a hub

loose ball bearings: when the bearings inside a component are not held in a metal or plastic retainer

linking cable: the cable on a cantilever or centerpull brake, which joins both sides of the brake

lug: an external metal sleeve that holds two or more tubes together at the joints of a frame

main triangle: see front triangle

master link: a special link on a bicycle chain that can be opened by flexing a plate, removing a screw, or some other means besides driving out a rivet

"mixte" frame: a frame that replaces the top tube with twin lateral tubes that run all the way from the head tube back to the rear dropouts

mountain bike (MTB): a bicycle with straight handlebars, sturdy fat tires, and wide-range gearing designed for off-road use with 26" wheels

mounting bolt: see pivot bolt

Nexus: a type of Shimano hub that has 4 or 7 internal gears and an internal brake

nipple: a small metal, either brass or aluminum, piece that fits through a wheel rim and is threaded inside to receive the end of a spoke

noodle---the L shaped metal piece of tubing piece found on the side of V-brakes

NORBA: National Off-Road Bicycle Association (governing body of off-road racing)

panniers: luggage bags sold and used in pairs, fastened to a rear mounted rear, alongside one or both wheels of a bike

pin spanner: a wrench with pins on forked ends, used to turn certain adjustable cups on some bottom brackets and crankbolts

pivot bolt (mounting bolt): a bolt on which the arms of caliper brakes pivot and which also serves as the means for mounting the brakes on the bike frame

preload: an important suspension adjustment, usually modifying pressure or adjusting the elastomers to ensure that the suspension responds appropriately for the rider's weight

Presta valve: a bicycle tube valve whose stem has a small nut on top, which must be loosened during inflation, instead of a spring such as is found on the Schrader valve

quick-release: a cam-lever mechanism used to rapidly tighten or loosen a wheel on a bike frame, a seatpost in a seat tube, or a brake cable within cable housing

quick-release skewer: a thin rod that runs through the center of a wheel axle; a cam-lever is attached to one end and the other end is threaded to receive a nut

quill: a type of stem with an internal wedge system---the alternative to threadless systems.

Race: curved metal surfaces of cups and cones that ball bearings contact as they roll

rake: see fork rake

rattrap: the type of pedals that have thin metal plates with jagged edges running parallel on each side of the pedal spindle

rear triangle: a frame triangle formed by the chainstays, seatstays, and the seat tube

recumbent: super comfortable bikes that place the rider in a reclining feet-first position

regular thread: what's found on almost all bike parts; turn to the right to tighten; to the left to loosen

replaceable derailleur hanger: a type of derailleur hanger that can be easily replaced if it gets damaged

retainer: the metal or plastic ring that holds the bearings in place in a headset or bottom bracket and sometimes a hub

rim: the metal hoop of a wheel; holds the tire, tube, and the outer ends of the spokes

rim brake: any type of brake that slows or stops a wheel by pressing its pads against the sides of the rim

riser handlebars: a mountain-bike handlebar that bends up on the ends; found on downhill, Freeride and some cross-country bikes

roller cam brakes: mountain bike brakes that affix to frame posts and employ a cam and pulley system to modify pressure on the rims

rollers: a stationary training device with a box-like frame and three rotating cylinders (one for the front wheel and two for the rear wheel) on which the bicycle is balanced and ridden

saddle: seat on a bicycle

Schrader valve: a tire valve similar to the type found on automobile tires

sealed bearings: bearings fastened in sealed containers

sealed pulleys: a type of derailleur pulley that has sealed bearings

seamed tubing: tubing made from steel strip stock that is curved until its edges meet, then welded together

seamless tubing: tubing made from blocks of steel that are pierced and drawn into tube shape

seat cluster: the conjunction of top tube, seat tube, and seatstays near the top of the seat tube

seatpost: part to which the saddle clamps and runs down inside the seat tube

seatstays: tubes that run from the top of the seat tube back to the rear axle

seat tube: the tube that runs from just below the saddle down to the bottom bracket

semi-slick tire: a type of mountain-bike tire with limited tread; popular for not-too-technical courses because they roll so fast and roads

sew-up tire (tubular): a tire with an inner tube stitched inside the casing; also known as a tubular

shallow (slack or relaxed) angles: angles that position frame tubes relatively farther from vertical and closer to horizontal

skipping: a mishifting feeling in the drivetrain when you pedal

Solvent: a liquid used to cut grease and grime such as when cleaning components or chains

spanner: another name for a wrench, applied to many bicycle tools

spider: the multi-armed piece to which the chainrings are bolted

spindle: another term for an axle (such as a pedal axle or a bottom bracket axle)

spoke: one of several wires used to hold hub in the center of a wheel rim and to transfer the load from the perimeter of the wheel to the hub and on to the frame

sprocket: a disc bearing teeth for driving a chain, a general term that applies both to chainrings and to cassette cogs

stainless steel: a type of steel that will not rust; ideal for spokes

stationary trainer: device you attach your bike to so you can ride in place

steep angles: angles that position frame tubes nearer to vertical than do shallow angles

steerer tube: the tube that forms the top of the fork and rotates inside the head tube

stem: the part that fits into or on the fork and holds the handlebars

STI: Shimano's name for shift levers and brake lever combination. SHIMANO TOTAL INTERGRATION.

Stirrup cable (straddle cable, transverse cable, linking cable, crossover cable): on centerpull-type brakes, a short cable, each end of which attaches to a brake arm and which is pulled up at the center to activate the brakes

suspension: as found on all cars, many mountain bikes, and some road models, featuring forks and frames that absorb road and trail shocks to improve comfort and control

swing arm: the movable rear end of a suspended bicycle

Tandem: a bicycle that has seats, bars, and pedals for two or more riders, one behind the other

tap: to cut threads inside a tube or opening; also the name of the tool that does the cutting

threadless headset (Aheadset)--- a type of headset that fits on a fork whose steerer is unthreaded; often found on mountain bikes


thumb shifter: a shifter designed to be operated with the thumbs such as older Shimano models or Sturmey Archer 3-speed models

toe clips and straps -- cage-like kit attached to pedals to keep your feet in the correct position (unnecessary on clipless pedals)

top tube: the horizontal tube that connects the seat tube with the head tube

triple crankset: a triple chainring crankset designed to provide the wide range of gears needed for loaded bicycle touring


track bike: type of bike used for racing on a bicycle track (velodrome); looks a lot like a road bike but features only one gear and has no brakes


tubular tire: a type of tire that has a tube sewn inside the casing, also known as a sew-up

twist shifter (GripShift)---a type of shift lever that's twisted to shift the gears such as GripShift models

U-brakes: heavy-duty centerpull mountain-bike brakes that affix to frame posts

U-lock: U-shaped lock; called D-locks in Britain

unicrown fork – a fork (usually on mt. bikes) on which the blades curve in at the top and are welded at the top to the steerer instead of fitting into a fork crown (there is no fork crown on a unicrown fork)

universal cable: a shift or brake cable that's designed to fit all types of levers; on each end is a different lead end and you cut off the one you don't need

USCF: United States Cycling Federation (governing body of road and track racing)

V-brake: a type of very powerful brake used mostly on mountain bikes. Also called direct-pull brakes.

Wheelbase: the distance between the front and the rear axles
Wind trainer: a training device consisting of a frame in which a bicycle is fastened for stationary riding and a fan that creates wind resistance to simulate actual road riding

wired-on tire (also known as "clincher" tire): a tire with a wire bead edge that fits inside a trough-shaped rim; the type of tire often inaccurately referred to as a "clincher"

zip tie: a plastic strap that when threaded through its end and pulled, tightens and stays tight to affix cables or number plates (etc.) to a bicycle

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Section 2: Compatiblity Charts



Section 2.1.1: Campagnolo 10 Speed Compatibility

Campagnolo 10 Speed Component

Ergopower Hubs Rear Derailleur Cassettes* Chain Cranksets Front Derailleur
10 spd system YES YES YES YES YES YES YES
9 spd system M YES NO YES NO NO YES
8 spd system M NO NO NO NO NO NO

YES= COMPATIBLE WITH NO MOTIFICATIONS
M= COMPATIBLE WITH SOME MODIFICTIONS
NO= NOT COMPATIBLE
*Cassettes compatible with system hubs

10 spd Shifters can be motified to an 8 or 9 spd shifter, we don't supply those parts

10 spd Hubs compatible w/ 9 spd cassettes

10 spd Rear Der not compatible with 9 spd cassettes
13-29 cannot be used with Record or Chorus short cage der
standard record and Chorus ders can be used with: 11-21 11-23 12-25 13-26 cassettes
medium Record and Chorus Ders can be used with: 13-26 and 13-29 cassettes
Daytona and Centaur Rear Ders can be used with all 10 spd cassettes, including 13-29

10 spd Cassettes must use 10spd chain whip to remove, in addition to Campy Lockring remover
Record Ti 11-23 cassettes has a steel 11t, "Because of structural considerations, it was not possible to make it out of titanium"

10 spd Chain 10 spd chains will NOT work on 9 spd systems
9 spd chains will NOT work on 10 spd systems

10 spd Cranksets 10 spd cranksets will NOT work on 9 spd systems
9 spd cranksets will NOT work on 10 spd systems

10 spd Front Der 10 spd front derailleurs are compatible with 9 spd systems.
9 spd Record front derailleurs are compatible with 10 spd systems provided the rubber insert is installed, must order from LBD
Pre-2000 Chorus and 2000 Daytona 9spd front derailleurs are NOT compatible with 10 spd systems