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- Patented Drop-Stop ST technology for maximum chain retention and extends chainring life
The handlebar's internal cable groove is compatible with the latest Di2 electronic shifting systems
providing precise and reliable gear shifts under demanding riding conditions
The tire's sidewalls are reinforced with Maxxis' patented EXO Protection
Zipp Service Course SL Stem 70mm Aluminum Road Bike Stem with Titanium Bolts Length_85 mm - Patented Drop-Stop ST technologyUpgrade your road cycling setup with the Zipp Service Course SL Stem 70mm 31. 8mm + 6 in Matte Black a high performance, lightweight stem engineered for precision and durability. Crafted from premium 7075 aluminum, this stem combines strength and stiffness to optimize your bike's handling and responsiveness. Materials & Construction: Made from forged AL 7075 aluminum, the Zipp Service Course SL Stem delivers exceptional durability while remaining
