10pcs Bicycle Bottom Bracket Spacer Kit for 7/8/9/10/11 Speed Cassette Freewheel, Aluminum Alloy with 1/1.5/2/2.5/3mm Bottom Bracket Adjustment Spacers

Product Features: Improve Freewheel Performance: Without spacers, the freewheel may become loose affecting riding experience; installation ensures perfect fit between freewheel lockring and freewheel. Rich Specifications: 10pcs of 5 different specifications of freewheel spacers meet various gear shifting needs, convenient for DIY modifications and ideal as gifts. Product Parameters: Color: As shown in the picture Material: Anodized aluminum alloy Dimensions: Inner diameter 35mm / Outer diameter 42mm Package Contents: 10x bicycle freewheel spacers, including 2x1mm, 2x1.5mm, 2x2mm, 2x2.5mm, and 2x3.0mm spacers. Friendly Reminder: Manual measurement may have slight errors. Color differences may occur due to display variations.

• Durable Material: Made of anodized aluminum alloy, suitable for conversion between 7/8/9/10/11 speed cassettes and bottom bracket adjustments; lightweight and durable for long-term use; enables precise symmetric adjustments safely and reliably.
• Versatile Applications: Solves multiple issues: adjusts spacing when chainrings touch the frame or cranks contact the frame; used for bottom bracket installation when front derailleur fails to downshift properly.
• Gear Conversion: Converts a 10-speed freewheel to an 11-speed hub, a 7/8/9-speed freewheel to a 10/11-speed hub, and a 7-speed freewheel to an 8/9-speed hub.
• Portable Backup: Compact and lightweight for easy carrying; can be stored with the bike as backup; after installation, precise shifting is achieved via freewheel lockring securing.
• Kit Contents: Includes 10 quick-release spacers (2 pieces each of 1mm/1.5mm/2mm/2.5mm/3mm), color options available.