Wolf Tooth Components Semi-Internal IS52 Premium Upper& Lower Headset Black

Premium Wolf Tooth headset allows shift and brake housing to run internal below the stem- Five-layer weather sealing to keep internals clean include: Custom-molded captive rubber seal at the cable entry ports, custom overmolded dual-lip crown race seal interface with frame or EC44 cup, steer tube o-ring seal, silicone dual-lip bearing seals- Enduro stainless bearings- 7.8mm upper stack- Made in MN, USA