🛠️ PRO SERIES 4-Stroke Carburetor Kit (38mm–40mm)

Maximize your powerband and eliminate jetting headaches with the PRO SERIES 4-Stroke Carburetor Kit. Built for serious riders who want torque-rich, throttle-snapping response across the entire rev range—without ever needing to re-jet.

This plug-and-play billet system includes a precision Xcelerator metering rod, Torque Jet + Power Jet circuits, and a fully integrated throttle assembly. From MX to hard enduro, it delivers clean, instant power in any conditions.

✅ What’s Included:

• PRO SERIES 4-Stroke Carburetor (38–40mm)

• Billet aluminum body with redirect slide ramp

• Xcelerator metering rod (built-in)

• Integrated Torque Jet & Power Jet systems

• Throttle cable + assembly

• Internal fuel circuit routing (no hoses)

• Perforated brass slide

• Tailored bore design

📦 Fitment:

This kit replaces most OEM 4-stroke carburetors in the 36–41mm range, including:

• Honda: CRF250R, CRF450R, CRF450X, XR650L

• Yamaha: YZ250F, YZ450F, WR250F, WR450F, YZ426F

• Suzuki: DRZ400-S/SM/E, RM-Z250, RM-Z450, DR650

• KTM: 250–530 EXC, SX-F, XC-F

• Other models: Keihin FCR-MX, Mikuni TM/BSR/BST carbs (36–41mm)

Check spigot and bell dimensions to confirm fitment:

• Length: 87mm–115mm

• Spigot OD: 43mm–48mm

• Bell OD: 54mm–62mm

🛡️ Warranty Info:

Manufacturer’s limited warranty. Designed for off-road and race use only.