With a BB29 forged CrMo spindle, the RTT-72CK-4B ensures unparalleled stability and durability.  Whether it's a rugged mountain road or a smooth highway, it guarantees smooth and precise gear shifting, making your rides effortless.

Designed specifically for 2x11s speed configurations, the RTT-72CK-4B offers exceptional gear options, allowing you to tackle any road condition with ease.  Whether it's climbing steep hills or descending at high speeds, it provides reliable power transmission, keeping you in the optimal riding state.

Paraserê hilberîn

Crank: 165/170/172.5/175mm(Forged Al6061-T6)

Chainring: 40/42/44T(A17075-T6 CNC)

Axle: BB29 Forged Al7075-T6

Chain line: 50mm Gravel

BCD: 41 mm

Speed: 1x12s/11s

Q-Faktor: 158mm

Weight: 660g(170,42T)