The A-Head Adapter fits all Polisport front bike seats. Fits bicycles with 1”1/8 threadless stems, including those with standard or integrated cable routing. Requires 5 mm of installation space.
Standard & Integrated Aheadset Compatability: Designed for modern bicycles, compatible with standard Aheadsets and Aheadsets with integrated cable routing (ICR).
Product Dimensions
105mm (L) 
110mm (W)
30mm (H)
Product Weight 
373g