Mountain Bike Crankset Sizes

First identify your frame s bottom bracket standard.

Mountain bike crankset sizes. Short arms are good for pedaling up hill while longer ones are better for downhill. Mountain bikes come in standard sizes from small to xl but mountain bikers are all different shapes and sizes. Crank arm lengths range from 165 180mm increasing in 5mm increments. 24mm spindle crank shimano hollowtech ii etc.

Then use the chart below to help identify key crankset dimensions needed to select the correct bottom bracket for your frame. Size up or size down your mountain bike frame. Spindle bb code and size examples. Enduro all mountain.

You can buy longer mountain bike crank arms as they go up to 180mm. Likewise some riders prefer the ride of a bigger bike versus a smaller frame. Smaller frames and women specific frames both may come with shorter crank arms usually 165mm. Raceface atlas mountain bike crankset stealth 165mm with 83mm bb.

Bnvb bike crank arm set 170mm 104 bcd mountain bike crank set with bottom bracket crank and chainring bolts for mtb bmx road bicyle compatible with shimano fsa gaint black red silver. The size of your mountain bike crank arm should be proportional to your leg length. Dh 165mm crank arm length so you don t lose your crank to those jumping rocks and since pedal efficiency isn t at the top of your list when you are able to take a lift shuttle or have to hike. Scroll to bottom of page for photos of each crank type.

Sram gxp 165mm 48t black omnium track crankset w bb. Sizes go up by 5mm. Single speed crankset 48t 170mm crankarms. This means that many riders might be in between sizes left with the decision.

The default or standard crank arm length is 175mm on mountain bikes and is always measured in millimeters. Best mountain bike cranksets review with buying guide shimano xt fc m780 10 speed mountain bike triple crank set 42 32 24 175mm. D3h 68 ss 120 un72 68 x 113 un52 70 x 107 344 see the section for your brand of crank for details of the measurement system used. Trail enduro 170mm crank arm length is the most commonly used size and is recommended to keep a good leverage ratio and have a bit more ground clearance due to having more travel.

Clear selection compare products select within 4 select within 2. Clear selection compare products select within 4 select within 2. Options from 165mm to 180mm cover different limb lengths it could be worth your while to research what crank length is recommended for your inside leg measurement. Components mtb category crankset.