You-All 18mm CVK PD18J Carburetor | 139QMB Ruckus
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Eliminate hesitation and restore consistent power to your 50cc scooter with the You-All 18mm CVK PD18J carburetor — our #1 selling carburetor. Larger venturi with a mechanical accelerator pump for crisp throttle response and a stable idle on daily commuters and performance builds alike.
- Model: PD18J (CVK type)
- Intake bore: 18mm
- Air filter mount OD: 40mm
- Main jet: #81
- Idle jet: #33
Compatible Models (139QMB / GY6 50cc):
- Chicago Scooter Co.: go., go. Max, Bella 50, Nitro Sport
- Wolf Brand: RX-50, Islander, Rugby, Blaze, Lucky, Jet
- Lance: Cali Classic 50, Cabo 50, PCH 50
- Honda: Ruckus / Metropolitan (select 50cc carb models)
- All 139QMB / GY6-powered 50cc scooters, ATVs, and quads with PD18J carburetors
Mechanic's notes: After installation, ensure your throttle cable has a small amount of freeplay so the accelerator pump can fully reset between throttle inputs.
Off-road use only. Not intended for use on public roads or land.
Shipping information
Orders are prepared as quickly as possible. Delivery times and shipping costs are calculated at checkout based on the destination and items ordered.
Returns & warranty
Please verify fitment and part number before ordering. Contact Thrifty Scooters promptly if an item arrives damaged or incorrect.