Built for riders chasing a lightweight, race-ready cockpit without sacrificing fit flexibility, the Zipp Service Course SL Alloy Road Stem delivers pro-level stiffness, clean aesthetics and versatile compatibility in one premium package. Constructed from high-strength 7075 aluminium with titanium hardware, the Service Course SL-OS is designed for oversized 1 1/4" steerer tubes commonly found on Giant and Canyon bikes, while the included shims also allow it to fit standard 1 1/8" steerers. With adjustable rise options and Zipp’s renowned stiffness-to-weight performance, it’s an ideal upgrade for road and gravel riders looking to fine-tune their position with confidence.

• Compatible with both 1 1/4" and standard 1 1/8" steerer tubes
• Forged 7075 aluminium construction delivers exceptional stiffness and low weight
• Titanium TORX hardware provides secure clamping and precise torque adjustment
• Designed for 31.8mm handlebars and compatible with Zipp QuickView computer mounts