1" Bicycle Headset Expander for Fork - CNC Aluminum Expander

• [Precise carbon compatibility] Expander for 25.4mm MTB suspension fork (inner diameter 19-21mm) • [Industrial Durability] Made of 6061-T6 aluminum with CNC knurling.Achieves 43% higher tensile strength compared to standard expanders. • [Reusable with no tools required] Easy to reuse by simply loosening the lock nut. • [Perfect fit] Optimized for niche forks (1-inch headsets with old frames).Includes 28mm aluminum stem cover with T30 Torx screws. • 【Wide Application】This rear derailleur protector fits most bicycles, including mountain bikes, folding bikes, road bikes, BMX, racing bikes, etc.

1" Bicycle Headset Expander for Fork - CNC Aluminum Expander Sleeve 19-21mm | T6 Heat Treated | Compatible with 25.4mm Steer Tube