The refreshed Turbine Stem brings a cleaner, more refined look without compromising on the durability serious riders demand. Fully machined for precision and strength, it clamps down hard and holds firm mile after mile, drop after drop. Lighter, stronger, and a worthy centerpiece for any cockpit build. Specs Steerer Tube: 1-1/8" (28.6mm) Bore Clamp: 35.0mm Length: 32mm, 40mm, 50mm Stack Height: 42mm Bar Clamp Width: 48mm Offset: 0 degrees Material: 6000-series Aluminum Weight: 126g (40mm)