Shimano XT Deore FC Crankset - M8120 - 2

The new Shimano XT 12-speed components, designed for use ranging from cross-country to enduro. The XT components designated 8100 are designed for 1x12 and 1x12-speed drivetrains. The legendary durability and performance of XT MTB parts is now also available in 12-speed. The new Deore XT M8100 series boasts a host of technical highlights, including Shimano’s groundbreaking 12-speed Micro Spline cassettes, available with a range of 10-45T or 10-51T, 1x12- or 2x12-speed Hollowtech II cranksets, powerful two- and four-piston brakes, I-Spec EV shifters, high-precision 12-speed rear derailleurs and front derailleurs, Ice Tech Frezza brake discs with their outstanding heat dissipation, as well as the WH-M8100 and WH-M8120 wheelsets for XC and enduro use.

Shimano XT FC-M8100 crankset

The new Deore XT 2x12-speed crankset features, among other things, Shimano’s world-renowned Holowtech II technology. With a 36-26-tooth range, combined with the 10-45 cassette, it offers the ultimate gear ratio range, guaranteeing maximum flexibility across the riding spectrum whilst maintaining small gear steps, which in turn ensure a consistent cadence. The 2x cranksets are available in Boost version FC-M8120-B2, 148 mm O.L.D., 51.8 mm chainline, 178 mm Q-factor, and Non-Boost version FC-M8100-2, 142 mm O.L.D., 48.8 mm chainline, 172 mm Q-factor.

Shimano Direct Mount chainring mount:

The new XT 2x12-speed cranksets now also feature Shimano’s Direct Mount chainring mount. This allows the chainrings to be easily swapped. The TL-FC41 tool is required for removing and fitting the chainring. The large aluminium chainring is fitted using the Direct Mount mount, and the small steel chainring is attached to the large chainring (which is designed for this purpose) using four bolts. The crank arms themselves are identical to the 1x12-speed version. A conversion from 2x12 to 1x12-speed is therefore possible. A conversion from Boost to a non-Boost chainline or vice versa is not possible, as the crank arms generate different chainlines.

Shimano XT Crankset FCM 8120 B2 Technology:

• Hollow-forged aluminium crank arms
• 24 mm Hollowtech II steel axle
• Chainring / spider mount: Shimano Direct Mount
• Chainring sizes: 36 / 26 teeth
• Boost chainline 51.8 mm
• Q-factor: 178 mm
• Weight approx.: 672 grams, manufacturer’s specification

Contents of delivery XT crank arms FCM8120 B2:

Shimano XT FC M8120 Boost crankset arms, right and left, chainrings 36 and 26 teeth, chainring bolts, crank bolt

Compatible bottom bracket shell / bottom bracket:

• BSA thread: BC - 1.37 x 24T, bottom bracket width 68–73 mm, Shimano BBMT800B bottom bracket
• Pressfit 92: Press-fit diameter 41 mm, bottom bracket width 89.5–92 mm, Shimano BBMT800PA bottom bracket
• BB30 OS: Press-fit diameter 42 mm, bottom bracket width 84.5 mm, bottom bracket Shimano SMBB9142A
• BB30: Press-fit depth 42 mm, bottom bracket width 68–73 mm, compatible bottom bracket cups
  Wheels Outboard Item No.: BB30-OUT
• BB30A: Press-fit depth 42 mm, bottom bracket width 73 mm asymmetrical, compatible bottom brackets:
  Wheels Outboard Item No.: BB30A-OUT-SHIM
• Pressfit 30: Press-fit diameter 46 mm, bottom bracket width 68–73 mm, compatible bottom brackets:
  Wheels Outboard Item No.: PF30-OUT
• Pressfit 30A: Press fit 46 mm, bottom bracket width 73 mm asymmetrical, compatible bottom brackets:
  Wheels Outboard Item No.: PF30A-OUT-SHIM
• BBright: Press-fit 46 mm, bottom bracket width 79 mm, compatible bottom brackets:
  Wheels Outboard Item No.: BBRIGHT-OUT-1
• 386EVO: Press fit 46 mm, bottom bracket width 86.5 mm, compatible bottom brackets:
  Wheels Outboard Item No.: 386EVOBB-SHIMAC
• Trek BB90/95 press-fit 37 mm, bottom bracket width 90/95 mm, compatible bottom brackets:
  Wheels replacement bearings Part No: SB-24X37 plus seals and spacers Part No: SHIM-SPACER-PK
• T47 thread: M47x1, bottom bracket width 68–132 mm, compatible bottom brackets:
  Wheels Outboard Part No: T47-BB-SHIM-AC

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