Zipp SL145 Carbon Road Bicycle Stem 31.8mm x +/ 12.5 degree

The SL145 is the stiffest, strongest all carbon stem available and we've got the EFBe test results to prove it. Each stem is wrapped by hand from more than 50 pieces of precision cut carbon cloth with machined aluminum yokes at the steerer and stem clamp areas. The elegant, forged aluminum faceplate is highly polished with a very thin stainless steel insert to ensure maximum stiffness and durability. To find the M4 titanium bolts, we left no stone unturned and sourced from the same Italian facility that produces the ones used by Ducati's MotoGP racing program. The SL145 tips the scales at 135g 100mm and is available in lengths from 100mm to 130mm. 12.5 degree angle and 31.8mm clamp.