Shimano SLX 12-speed Crankset, FC-M7100-1, with or W/O BB-MT800 XT Bottom Bracket

Shimano SLX 12s Crankset with chainring
FC-M7100-1: 30T / 32T
165mm / 170mm / 175mm length
With or without BB-MT800 (Threaded or Press-Fit)
Average weight (w/o BB, 175mm): 634/631/646g (30/32/34T)
Some variants may not appear in drop-down (if they're out of stock).

This new SLX 12 speed crankset is designed specifically for Shimano's newest 1x12 MTB drivetrains. Its all new, lightweight design features a direct mount chainring and comes in a variety of size options.

Direct mount system utilizes a spline and single nut to secure chainring to crank arm.
HOLLOWTECH II design reduces weight while maintaining appropriate stiffness for maximum power transfer.
DYNAMIC CHAIN ENGAGEMENT+ chainring teeth profiles designed specifically for MTB applications, whether cross-country, enduro or trail.
Superior chain retention properties and smoother pedalling feel result in less component wear and a more enjoyable ride.
Improved chain retention, even in the toughest terrain conditions.
2-piece design:

saves weight
increases stiffness and power transfer while limiting weight

FC-M7100-1
O.L.D. (mm): 142, 148
30T 1x chainring, 32T 1x chainring or 34T 1x chainring
165mm crank arms, 170mm crank arms or 175mm crank arms
Q-factor: 172mm
Chainline: 52mm
P.C.D.: N/A (Direct mount)

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Deore XT BB-MT800 Threaded
Compatible with 68/73mm bottom bracket shells, Sealed bearings
or
Deore XT BB-MT800-P Press-Fit
Compatible with 89.5/92mm bottom bracket shells, Sealed bearings

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Our thoughts:
Definitely not a crank option to be overlooked by trail riders and racers alike.

Keep in mind that your mileage may vary pairing this with a 135mm O.L.D. (i.e. a quick release skewer) rear hub. Officially, Shimano says this is compatible ONLY with 142mm and 148mm rear ends. It'll probably work fine with a 135mm freehub, it just might be a tiny bit noisier in some gears than one might expect... from the newest SLX drivetrain.

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USER MANUAL

INSTALLATION

COMPATIBILITY - Shimano Rear Drivetrain Products

COMPATIBILITY - Shimano Front Drivetrain Products

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