The BEAM SPIDER design reduces the weight of SHIMANO's 12-speed SLX M7100 cassette while increasing its MTB gear range with an additional sprocket. The 10-45 and 10-51T cassettes feature SHIMANO's new MICRO SPLINE rear hub body and HYPERGLIDE+ tooth profile, delivering unmatched shifting performance.

Advanced shifting performance gives you the confidence to enjoy every ride
Change gears without stopping pedaling
HYPERGLIDE+
Lighter and stiffer cassette sprocket design reduces inertia and improves acceleration
BEAM SPIDER
Lighter drivetrain setup
Smallest 10T sprocket thanks to the new FREEHUB body design
MICRO SPLINE
Wide range and closely spaced 12-speed drivetrain