Two-pack Mountain Road Bicycle Fork Expansion Core Screws fit standard fork tubes in 1 inch (25.4 mm) and 1 1/8 inch (28.6 mm) sizes. They cover an expansion range of 22.2–25.43 mm for a secure, precise fit.
Ideal for upgrading or replacing worn expansion cores on mountain-road forks. The design minimizes risk to the inner fork wall during installation and maintains reliable engagement during riding.
- Material: 304 stainless steel screws; 6061 aluminum alloy ratchet and blocks.
- Expansion range: 22.2–25.43 mm; compatible with 25.4 mm and 28.6 mm O.D. forks.
- Weight: ~37.2 g per piece (two-pack total ~74.4 g).
- CNC knurling: dense, orderly teeth for a secure, non-slip grip.
- Durability: corrosion-resistant construction for long-term use.
- Installation: easy to fit without damaging the fork interior.
- Applications: suitable for mountain-road setups and spare parts kits.
Fit: compatible with forks having O.D. 25.4 mm or 28.6 mm; ensure the expansion range aligns with your fork diameter.
