Zipp SL 145 Carbon Stem

The SL145 stem is a perfect example of the determination that our engineers display when faced with a challenge. It requires 50 sections of hand-wrapped carbon cloth, titanium bolts sourced from the same Italian producer used by Ducati's MotoGP racing program, and a stainless steel insert within the anodized black faceplate.

The SL145 was not easy to design and it’s not easy to produce. But the result is the stiffest, strongest all-carbon stem available – as verified by EFBe Laboratory. The SL145 is a rock-solid connection from bars to bike that weighs just 135g (100mm). It’s available in lengths from 80mm to 130mm ± 12° angle and 31.8mm clamp.

• Weight: 135g (100mm)
• Sizes: 100, 110, 120, 130mm
• Clamp Diameter: 31.8mm
• Angle: ±12°
• Steer tube diameter: 1 1/8 inch with 1 inch reducer shim
• Stack height: 40mm
• Clamp width: 47mm
• Clamp torque: 6Nm