Zipp Service Course Stem +/- 6 deg Stem Bike Accessories Brand_Ergon OpenRun is our lightest headphones

OpenRun is our lightest headphones to date and are engineered with outstanding sound

The only system to feature continuous 3-axis adjustability for all out performance and comfort on the bike

precision machined brake tracks with wear indicator

- you’re ready to sweat

Zipp Service Course Stem +/- 6 deg Stem Bike Accessories Brand_Ergon OpenRun is our lightest headphonesIndustry leading stiffness to weight ratio Faceplate and body geometry adds stiffness and simplifies installation by spreading the torque load more uniformly 3D forged 7075 aluminum construction with steel Torx bolts and a black anodized aluminum faceplate Steerer Diameter: 1 1 8" Bar Diameter: 31. 8mm Color: Blast Black