Promax Headset Adapter 1 1/8"-1" length-4-00 5 Size: XL Inch: 40

5 Size: XL Inch: 40 - 45 CM: 101

Top Tube: 20" (507mm)

Clamp (Ø): 31

25" rear chainstay as well as the addition of a 22" top tube Pro XXXL

150mm length with mid-size flange

Promax Headset Adapter 1 1/8"-1" length-4-00 5 Size: XL Inch: 40The Promax Headset Adapter 1 1 8" 1" at J&R Bicycles is a practical and affordable solution for riders looking for compatibility between different headset sizes. This adapter seamlessly bridges the gap, enabling the utilization of 1" threadless headsets in frames specifically designed for 1 1 8" headsets. The durable design ensures a secure and effortless fit for budget friendly convenience. Details: Allows the use of 1 threadless headsets in frames