How do you know what cranks will fit my bike?

Cranks come in a range of sizes, most commonly from 165mm to 190mm, and ideal crank length is often determined by three factors: your height, your cycling discipline and your personal preferences. If you change your crank length, it will change how it feels to pedal your bike, and it may change your fit on your bike.

How do I know what crankset I need?

Crank length: This is measured from the centre of the bottom bracket axle to the centre of the pedal axle. Most stock bikes have cranks of 170mm or 175mm, but you can get them as short as 140mm and as long as 190mm. Choose crank arms that suit your inside leg measurement for optimum comfort and control.

Are crank pullers universal?

There is no road versus mountain distinction with crank pullers. One size of extractor thread has been used on the vast majority of cranks for a long time, M22x1. There are several older sizes on cranks made by T/A, Stronglight, and possibly some more obscure ones, all of which need their own extractors.

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How do I know what bottom bracket fits my bike?

The 68mm and 73mm dimension measure the width of the bottom bracket on the frame of the bike with no BB installed, simply the width of the shell. Most road bikes that use a threaded bottom bracket measure 68mm wide and most cross country/trail mountain bikes measure 73mm.

Do all cranks fit all bottom brackets?

While modern road cranks are compatible with many different types of bottom bracket shells, some combinations are better than others. Shimano (left) and GXP (right) crank axles share the same diameter — 24mm — however the end of each axle is quite distinct.

Are shorter crank arms better?

A shorter crank length for the shorter triathlete will give all the above benefits and more, as less leverage will encourage a higher cadence saving their legs for the run. A lower aero bar position is achievable as knee tracking at the top of the stroke is improved.

How do I know what size chainring to get?

Just measure the distance between the CENTERS of two adjacent holes on the crank or the chainring like shown in these photos. The measurements do not need to be exact. The parts are exact, but if you just get close on the measurement, then you can find the value in the table fairly easily.

Are there different size crank pullers?

There is no road versus mountain distinction with crank pullers. One size of extractor thread has been used on the vast majority of cranks for a long time, M22x1. There are several older sizes on cranks made by T/A, Stronglight, and possibly some more obscure ones, all of which need their own extractors.

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What can I use instead of a crank puller?

You can also pry the threads out or remove them by slowly threading the bolt, depending on the crank arm type of your bicycle. Use a bolt or a spanner tool to remove and loosen the washers.

How much does it cost to replace a crank on a bike?

Cranks

Install BB $30.00 cranks
Install crank set $30.00 includes front derailleur adj
Install chain ring $15-$25.00 will vary with type of crank
Install pedals $5
Install chain $10.00

Do I need spacers on my bottom bracket?

If you need to use a bottom bracket mounted chain guide or derailleur, then you’ll also need to remove the innermost 2.5mm spacer on the drive side – so a 68mm or 83mm shell will have one drive side spacer and one non-drive side spacer, while a 73mm shell will need no spacers at all.

What is the bottom bracket on a bike?

Your bottom bracket is that hollow bit at the bottom of the frame into which the bike’s cranks fit, to allow you to pedal. There’ll be an axle in there, which turns in a pair of bearings: one on the right-hand, drive side of the bike, the other on the left-hand non-drive side.

Will BB30 crank fit PF30?

Yes, just switch out the crank. The frames are constructed differently. BB30 uses bearings that sit in the bb shell and are held in place with snap-rings. PF30 uses a one piece bearing and composite cup that presses into the bb shell.

What is the difference between hollowtech 1 and 2?

Hollowtech I used Octalink cartridge-type bottom brackets with a hollow splined spindle built into the cartridge, V-1 for road cranks and XTR and V-2 for most other MTB cranks and Tiagra and Sora cranks. Hollowtech II uses external cup bottom brackets with the spindle as part of the crank arms.

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Are all bike cranks the same size?

Cranks come in a range of sizes, most commonly from 165mm to 190mm, and ideal crank length is often determined by three factors: your height, your cycling discipline and your personal preferences. If you change your crank length, it will change how it feels to pedal your bike, and it may change your fit on your bike.

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