Controltech SRAM CR-49 Eccentric 11 Speed Chainring (Black) Brand-ism The blend of functional fibres

The blend of functional fibres ensures excellent heat and moisture management and the pressure-free cuffs guarantee ultimate comfort without slipping

Mode memory function

Quick and easy assembly Lighter shifting operation and reduced outer cable head distortion

You also benefit from deep sensory stimulation in your ankles

Semi-enclosing plastic ring connected to the adjustment system for optimum stability and form-fitness

Controltech SRAM CR-49 Eccentric 11 Speed Chainring (Black) Brand-ism The blend of functional fibresEccentric Chainring for less power output and better performance Features Better acceleration and dynamics than round chainring. Power output increases by 5. 6% when the crank arm rotation degree starts from 30 to 150 degrees (Dominant leg). Cadence increases by 5. 9 % when the crank arm rotation degree starts from 210 to 330 degrees (Non dominant leg). A great tool to train your non dominant leg to have greater performance. Specification Teeth Ratio