20 Piece Bike Bottom Bracket Spacer Set With 1mm To 3mm Shims For 7 To 11 Speed Freehub Cassette Anodized Aluminum Hub Washers And BB Adjustment For Quick Bike Maintenance And Freehub Compatibility

20-Piece Aluminum Spacer Set for Bike Bottom Bracket ✔️ Includes 20 spacers (1-3 mm) for 7-11 speed freehub tuning

These anodized aluminum spacers are designed to adjust chainline and frame clearance on road and mountain bikes, commonly used to improve freehub compatibility across 7-11 speeds and assist BB adjustment.

✅ Material: anodized aluminum alloy
✅ Size range: 1.0-3.0 mm in 0.5 mm increments (4 pcs each)
✅ Inner diameter: 35 mm, outer diameter: 42 mm
✅ Pack: 20 pieces across 5 sizes
✅ Colors: Red or Black

💡 What is a bike bottom bracket spacer set used for and how does it help with freehub compatibility? This handy spacer set helps dial in chainline and frame clearance for smooth shifting. - Keeps chainline aligned across 7-11 speed cassettes - Helps prevent rubbing between the flywheel cover and frame - Lightweight, portable, and easy to install