Renthal Strata Duo Mountain Bike Stem A tough and lightweight mountain bike (MTB) stem that offers much more than just a unique look, the revolutionary two-piece construction of the Strata Duo model delivers outstanding strength without adding excess bulk to your ride. Each piece has been extensively CNC machined by Renthal to shave as much material as possible, without sacrificing rigidity or durability. This special design also gives you a more efficient U-shaped handlebar clamp area, which removes the usual stress points that can cause your bars to become damaged or even fail. It’s an ideal choice for aggressive riders who want to make their bike’s front end lighter and to have a distinctive look.Features: Material: CNC Machined from 6082 T6 Aluminium Alloy Handlebar Clamp Diameter: 31.8mmSteerer Tube Clamp Diameter: 1.1/8"Rise: 10°Stack Height: 40mmInvertible: NoStem Cap Included: No Split stem design for maximum weight reduction U shape clamping area eliminates traditional stress risers for the handlebarWeight: 40mm Length: 139g (including bolts); 50mm Length: 124g (including bolts)Buy RaceFace Components from Chain Reaction Cycles, the World's Largest Online Bike Store.