The Wheels Manufacturing Freewheel and Bottom Bracket Cup Shims are essential spacers for fine-tuning the placement of your freewheel or cassette, as well as adjusting the chainline on frames with B.S.A external type bottom bracket cups. This pack of 10 shims provides you with the flexibility to achieve precise adjustments for optimal drivetrain performance. Simply insert the shims between the frame and the drive-side cup (cup must have a lip) to adjust the chainline or create additional crank clearance. These shims are a valuable tool for bike mechanics and enthusiasts who seek optimal drivetrain alignment.

Benefits:

• Allows fine-tuning of freewheel and cassette placement
• Helps adjust chainline on frames with B.S.A external type bottom bracket cups
• Provides flexibility for precise drivetrain alignment
• Pack of 10 shims for multiple adjustments
• Easy to install and remove as needed
• Essential tool for bike mechanics and enthusiasts seeking optimal drivetrain performance