The GRS-RK2 is sleek and simple in appearance, has a good stiffness-to-weight ratio, it is lighter than ever, and at only 502g (170mm long), it looks angular and looks sharp.

Finished from 6061 aluminum alloy and 7075 spindle, this crank is semi-hollowed and internally hollowed out on the back of the crank to reduce weight while maintaining stiffness.

It adopts three specifications of direct-loading discs, 50-34T/52-36T/53-39T, which are also made of 7075-T6 aluminum alloy by CNC machining and black anodized.

Model:GRS-RK2

Material:6061 aluminium alloy (cranks) and 7075 aluminium alloy

(Chainring+Spindle)

Weight:660g (with 50-34T Chainring)

Color: matte black

Compatible with all 10-13s chains

Crank length: 170mm

Chainring: 50-34T/52-36T/53-39T

Bottom bracket:BB51(68-73mm)

Axle: 24mm

K-factor：91.5mm