Riders replacing a worn crankset on a 9-speed bike with a square-taper bottom bracket and standard rear hub spacing.
The FC-MT101-2 is the two-ring version of Shimano's MT101 crankset, made for 9-speed HG chains. The 36-22T rings are riveted to a four-arm spider, and the black aluminium arms fit a square-taper bottom bracket. Shimano recommends the BB-UN101 with an LL123 axle length for 68 or 73 mm threaded shells.
The chain line is 48.8 mm, the Q-factor is 179.4 mm, and it is designed for 135 mm quick-release or 142 mm thru-axle rear hubs. Shimano lists no chain guard option for this model, and the crank arm fixing bolts are included. The rings are riveted on rather than bolted, so they are not swapped one at a time. It is not the same crank as the three-ring FC-MT101 or the wider-spaced FC-MT101-B2, so check the model name if you are matching a frame.
2x9 with 36-22T
Two rings, with a 22T inner ring for climbing and a 36T outer ring.
Made for 9-speed
Designed for HG 9-speed chains.
Square-taper fit
Recommended bottom bracket is the BB-UN101 (LL123) for 68 or 73 mm threaded shells.
Standard chain line
A 48.8 mm chain line for 135 mm quick-release or 142 mm thru-axle rear hubs.
Drivetrain
Fit and build
Great for
Maybe not for
170 mm arms with 36-22T chainrings. Shimano also makes this model with 175 mm arms. It needs a square-taper bottom bracket, and Shimano recommends BB-UN101 (LL123) for 68 or 73 mm threaded shells.
Three MT101 cranks
Shimano lists three versions of the MT101. The FC-MT101 has three rings (44-32-22T or 40-30-22T) and a 50 mm chain line. This FC-MT101-2 has two rings (36-22T) and a 48.8 mm chain line. The FC-MT101-B2 also has 36-22T rings but a 51.8 mm chain line for wider 141 mm quick-release or 148 mm thru-axle hubs. Match the model to your frame and front derailleur setup.
