Shimano XTR FC-M980 crankset

The high-end MTB crankset with a large hollow chainring, hollow-forged cranks, and a 2-speed race gear ratio of 38/26 teeth. The crankset of choice for MTB pros, the Shimano Dyna-Sys XTR FCM 980 in the 2-speed version for 10-speed drivetrains, now featuring the new, improved, lighter XTR bottom bracket SM-BB93.

Thanks to the 10-speed cassette and new chainring spacing, the Shimano Dyna-Sys system enables significantly closer gear ratios, resulting in smoother and easier gear changes and reducing chain tension by up to 31 per cent. The closer-spaced chainrings on the crankset allow for smoother and faster shifting and reduce gear overlap.

The heavily loaded middle chainring sits on a carbon carrier, whilst the teeth themselves are made of titanium. This ensures a significantly longer service life for the chainrings. The large and small chainrings are made of 7075 aluminium. The large chainring is also hollow-forged and offers maximum lateral stiffness.

Shimano XTR FC-M980 crankset technology:

• Hollow-forged aluminium crank arms
• Aluminium chainrings
• 26/38-tooth configuration
• Bore diameter 104/64
• Chainline 46.8 mm
• Includes SM-BB93 XTR bottom bracket, BSA thread 68/73 mm
• Weight with bottom bracket: 790 grams

Compatible bottom brackets for:

• BSA thread: Shimano SMBB93, bottom bracket width 68–73 mm, BSA thread BC-1.37 x 24T
• Pressfit 92: Shimano SMBB9141A, bottom bracket width 89.5–92 mm, press-fit depth 41 mm
• BB30: Shimano SMBB9142A, bottom bracket width 84.5 mm, press-fit depth 41 mm

Herstellerinformation: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com | EU contact: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, The Netherlands, www.shimano.com