Road bike cranks have shorter axles than MTB cranks. This is why road bike cranks cannot be fitted to MTBs. An exception to this are the DUB Road Wide cranks. These are also compatible with MTB frames featuring 135/142 rear dropouts.
The BB30 cranks are available in two short-spindle versions. These are only compatible with BB30 bottom bracket shells with a width of 68 mm. The BB30 long-spindle and BB386 cranks have the longer 30 mm axle and can be fitted into almost all bottom bracket shells.
For the other axle systems, there are virtually no compatibility restrictions. Although Shimano offers only a few bottom brackets compatible with the Hollowtech II system, there are many suitable alternatives from other manufacturers, such as Wheels MFG.
Replacement crank arm for Shimano 105 FC R7100 Hollowtech II road bike crankset, 12x2-speed, left, 172.5 mm
Replacement crank arm for Shimano 105 FC R7100 Hollowtech II road bike crankset, 12x2-speed, length, left, 165 mm
Replacement crank arm for Shimano 105 FC R7100 Hollowtech II road bike crankset, 12x2-speed, left-hand, 160 mm
Replacement crank arm for Shimano 105 FC R7100 Hollowtech II road bike crankset, 12x2-speed, left-hand, 170 mm
Replacement crank arm for Shimano 105 FC R7100 Hollowtech II road bike crankset, 12x2-speed, left-hand, 175 mm
Sram Red AXS E1 carbon crankset arms, Quarq power meter compatible, Dub Road axle, chainline 45 mm, 12x2 / 12x1-speed, length 155 mm
FSA PressFit 30 Ceramic Bottom Bracket, BB-PF8200, axle diameter 30 mm, press-fit diameter 46 mm, shell width 68 mm
The FSA MegaExo road bike bottom bracket for SL-K light road bike cranksets with Italian threading.
FSA MegaExo bottom bracket for road bikes, compatible with K-Force / SL-K Light road bike cranksets with BSA threading.
The original Shimano Ultegra chainring, 30 teeth, 92 mm bolt circle for the Shimano Ultegra FC6703 triple crankset in glossy grey, 10x3-speed, image for illustration purposes only
The FSA BB 30 adapter with ceramic bearings for fitting FSA MegaExo carbon road bike cranksets to frames with a BB 30 bottom bracket shell
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, silver, left, length 165 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, silver, left, length 160 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, left, length 175 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, left, length 172.5 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, left, length 170 mm