Shimano XTR Dyna-Sys FC-M980 Trail Triple Crankset One Color, 170mm, 170mm

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Price: $679.95 $340.00   

Product Feature

• Arm Material: aluminum
  Arm Length: 165 mm, 170 mm, 175 mm, 180 mm
  Bottom Bracket: external
  BB Type: SM-BB90-A
  BB Threading: English
  Bolts: aluminum
  Rings: 3
  Spindle: aluminum
  Compatible Components: HG-X 10-speed chain, E-Type front derailleur
  Claimed Weight: 660 g
  Recommended Use: mountain biking
  Manufacturer Warranty: 3 years
  Chainring Sizes: 42 / 32 / 24
• Bolt Circle Diameter: 104 mm

Product Description

Usually, new technology trickles down, but in this instance, Shimano trickled up technology from the 10-speed XT group. And this XTR Trail 3x10 Hollowtech II Crankset FC-M980 is the first 10-speed specific XTR triple crank. It's different than an XTR 970 crank in a number of ways. First, it's lighter by about 50 grams, and it's hard to beat the sinister, throwing star aesthetic when you compare it to the static-looking radial arms of the old spider. Other changes include a move back to pinch bolts for the left side crankarm to fix it to the splined Hollowtech II spindle. Gone is the threaded preload collar from the XTR 970 crank. The pinch bolt design better separates the functions for bearing preload and securing the crank. Like the last generation XTR cranks, the FC-M980 XTR Cranks use Shimano's Hollowtech II hollow cold forging process. This makes for a crankarm assembly that's lighter and stronger than traditional solid forgings. The outer chainring is hollow as well, and the advanced 3D shape is stiffer and more resistant to deflection when you're trying to make quick shifts up to the big ring. The chainrings are shaped according to Shimano's HG-X tooth profile design. What this means is that the shifting has been optimized to work with the new HG-X 10-speed XTR chain. The middle ring is still a composite of carbon and titanium to add rigidity for better shifting, increased service life, and smooth power delivery to the cassette out back.The XTR Trail 3x10 Hollowtech II Crankset FC-M980 comes in four crankarm lengths -- 165, 170, 175, and 180mm. It has a 42/32/24t chainring configuration. It comes as a complete crankset with a Shimano XTR Hollowtech II Bottom Bracket.

Shimano XTR Dyna-Sys FC-M980 Trail Triple Crankset One Color, 170mm, 170mm Review

I've been using this crankset for several months now (upgraded from SLX) and it's excellent the same as the SLX crankset was, the crank arms tend to scuff somewhat easily, however, it's a non issue if your main objective is to lower the weight of your bike, as was mine. Highly recommended!

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