Twin Power 88-Up XL 90-Up Big Twin Vacuum Piston For CV Carburetor Replaces H-D 27585-88
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Twin Power™ vacuum piston directly replaces H-D 27585-88 for Keihin CV carburetors on 1988-Up XL Sportster and 1990-Up Big Twin Harley models.
- 40 mm or 44 mm piston restores proper vacuum operation for smooth throttle response
- Fixes worn or broken diaphragms causing hesitation and poor idle performance
- Direct O.E.M. replacement H-D 27585-88 for Keihin CV carburetors

