Product information "Professional tuning PWM38 Carburetor for 125cc - 250cc Engines"
Unleash the Beast! – High Performance Tuning Carburetor (38mm)
Professional PWM38 Carburetor for 125cc - 250cc Engines
Boost your engine's output to the limit! This PWM38 Tuning Carburetor is engineered for competitive racing. Featuring an optimized short-body design and an integrated Power Jet system, it delivers a massive increase in power, lightning-fast throttle response, and superior fuel-air mixture at high RPMs.
The extremely short intake paths of the PWM series allow for maximum acceleration. It is the perfect upgrade for Shineray, Bashan, and many other 125cc–250cc Chinese Quads, Dirt Bikes, and Scooters modified for track use.
IMPORTANT NOTE: This carburetor is designed for Race use only. It is not legal for use on public roads.
Technical Specifications
Feature
Details
Model
PWM 38 (High Performance)
Intake / Bore
38 mm (Engine side connection: 46 mm)
Air Filter Connection
63 mm
Main Jet (HD)
175
Pilot Jet (ND)
50
Needle
CCJ
System
Power Jet (additional fuel injection at full throttle)
Compatibility
Universal for 125cc - 250cc 2-stroke/4-stroke engines
Installation & Tuning Tips (For guidance only)
Fine-Tuning: Every engine is unique. While the carburetor comes with a base setup (HD 175 / ND 50), it must be individually tuned to your specific engine, exhaust, and air filter.
Air Filter: Due to the large 63mm intake, an open-flow racing air filter is usually required.
Throttle Cable: Check if your original throttle cable provides enough travel or if a specialized racing cable is needed.
Spark Plug Check: After initial testing, always inspect the spark plug color to ensure the engine isn't running too "lean" (danger of piston seizure).
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