You work hard for those watts--don't lose a single one through your stem. Zipp's SL Sprint Stem is built with the beefiest carbon layup imaginable for a strength-to-weight ratio that would humble the strongmen in the pro ranks. At 1.8 grams per newton meter of stiffness, the SL Sprint has graced the bars of countless WorldTour pros. Zipp even uses T25 Torx bolts for their unsurpassed strength, resistance to stripping, and accurate torque setting. Rest assured, it's ready for you.