Premium Vacuum Slide Piston Assembly Direct Fit CV Carburetor Replacement for Harley Carburetor
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Give your motorcycle the smooth throttle response and reliable performance it deserves. This vacuum slide piston assembly is a precision CV carburetor replacement built for riders and mechanics who demand quality without the dealer price tag. Designed as a direct fit for Harley CV40 carburetor systems, it restores proper engine breathing and fuel delivery so your Twin Cam rides strong again. Whether you’re tuning, repairing, or refreshing your bike’s carburetion, this part delivers dependable operation and easy installation. Upgrade with confidence and feel the difference on every ride.
Key Features
- Engineered to replace worn or faulty vacuum slide pistons in CV‑style carburetors for clean, responsive throttle action.
- Durable construction ensures long‑lasting performance in demanding riding conditions.
- Direct fit into Harley‑Davidson Twin Cam CV40 carburetor applications — no modifications needed.
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Helps restore smooth acceleration, consistent idle, and efficient fuel delivery.
Why Choose Our Premium Vacuum Slide Piston Assembly
Unlike worn OE parts that lose vacuum sealing and responsiveness over time, this replacement part is built for reliability and value. It offers a cost‑effective alternative to dealership parts without sacrificing fit or function, making carburetor service and performance repairs straightforward. Installation is simple and designed to get you back on the road fast.
Perfect For (Occasions & Uses)
Ideal for motorcycle enthusiasts, professional mechanics, and DIY tuners working on Harley‑Davidson Twin Cam bikes with CV40 carburetors. Perfect for routine maintenance, carb rebuilds, performance tuning, or correcting poor throttle response and hesitation.
Experience smoother starts, sharper throttle feel, and more enjoyable rides with this Premium Vacuum Slide Piston Assembly — order yours today and bring back peak carburetor performance!




















