Throttle Slide Vacuum Membrane

HARDDRIVE Throttle Slide Vacuum Membrane

Restore smooth throttle response with the HARDDRIVE Throttle Slide Vacuum Membrane — a direct-fit replacement for punctured or torn seals on Keihin CV carburetors. Designed to match OEM fit and function, this membrane lets you repair the seal without replacing the entire slide assembly.

• Compatibility: Fits Keihin CV carburetors on 1988–present Sportsters, 1990–1999 Big Twins, and 1999–2006 Twin Cam models.
• Cost-effective: Replace only the damaged membrane instead of buying a full slide assembly.
• OEM-quality fit: Engineered to the correct dimensions for reliable vacuum sealing and consistent throttle performance.
• Easy installation: Simple swap-in replacement for routine carburetor maintenance and repairs.

Keep your motorcycle running smoothly and avoid unnecessary expense — the HARDDRIVE Throttle Slide Vacuum Membrane is the practical, OEM-minded solution for worn or torn Keihin CV carburetor seals.