Zipp Service Course SL Stem - 110mm 31.8 Clamp +/-6 1 1/8" Aluminum Matte BLK B2 MFPN=21156 Four assist modes (Walk

Four assist modes (Walk

molybdenum filled material increases small bump sensitivity while also increasing durability

Bosch PowerTube battery cables

Tough AL-6061 T-6 aluminum construction

Zipp Service Course SL Stem - 110mm 31.8 Clamp +/-6 1 1/8" Aluminum Matte BLK B2 MFPN=21156 Four assist modes (WalkZipp Service Course SL Stem 110mm 31. 8 Clamp + 6 1 1 8" Aluminum Matte Black B2. The Zipp Service Course SL Stem crafted from 7075 aluminum features a shape thats strong and lightweight resulting in a 1. 85 grams per newton meter of stiffness. That results in no flex sprints and accelerations. Forged AL 7075 Machined and relieved faceplate Features titanium hardware with TORX heads on all bolts for precision torque readings and ease of adjustment