NIBBI Carburetor PWK36YJ Racing Carburetor #135 Main/#35 Pilot, (for 300-450cc)
NIBBI PWK36YJ carburetor is designed for racing motorcycle engines. Up for sale is a genuine NIBBI PWK 36mm Performance Carburetor (Factory SKU: PWK36YJ). This high-performance, black-anodized carburetor is designed to dramatically improve throttle response and maximize airflow velocity. It is a universal upgrade or replacement for 2-stroke and 4-stroke dirt bikes, ATVs, and pit bikes in the 300cc to 450cc range. UPC / GTIN: 810133510167. Engine-Side (Spigot) Outer Diameter: 46mm. Airbox-Side (Intake) Outer Diameter: 63mm. Finish: Sleek Black Anodized Aluminum. Slide Type: Chrome-Plated Half-Moon Flat Slide. Special Circuit: Top-end Power Jet (prevents leaning out at high RPMs). Pre-installed Internal Jetting: This carburetor comes ready to mount with its factory baseline #135 Main Jet and #35 Pilot Jet securely installed inside the float bowl. Tuning Spares: Please note that this listing is for the carburetor only. Standard PWK-style replacement jets are widely available online if you need to lean it out for high-altitude riding. Common Fitment Examples (Universal Upgrade). Dirt Bikes: Honda CR250/CR500, Yamaha YZ250, Suzuki RM250, Kawasaki KX250, KTM 250/300. ATVs / Quads: Yamaha Banshee 350, Honda TRX250R / TRX450R. Various 300cc+ Chinese enduro and pit bikes Zongshen, Loncin, Lifan, etc.