BSA AA, M20, M21 & M23 Clutch Operating Top Cap

Wassell premium clutch operating top cap.

• OEM Ref: 15-4313
• Compatibility: BSA
• Applicable Models: M20, M21, M23, and AA with Single Spring Clutch (1936 – 1947)
• Approximate Dimensions (LxWxH): 12.5cm x 12.5cm x 3.2cm
• Approximate Diameter: 125mm