Upgrade your Yamaha YZ125 with a professionally prepared Keihin 38mm PWK Air Striker carburetor, custom tuned specifically for 125cc 2-stroke performance.
Unlike generic “out of the box” carbs, each unit is personally tuned by me for CR125 applications to deliver crisp throttle response, strong mid-range pull, and top-end performance.
38mm Keihin PWK Air Striker
Tuned specifically for 125cc Yamaha YZ125 engines
Baseline jetting installed for strong all-around performance, 0-3000ft mostly stock motor.
Includes correct spare jets for fine tuning to your elevation & setup
This gives you a true bolt-on starting point — not a random factory jet configuration.
1x Keihin 38mm PWK Air Striker Carburetor
Spare main jets specific for 125cc application
Spare pilot jets for dialing in your setup
Improved throttle response
Stronger mid-range power
Clean top-end pull
Air Striker quad-vent design for smoother airflow
Race-proven PWK performance design
Honda CR125R
(Confirm exact year compatibility before purchase)
Most sellers ship carbs with generic jetting. I personally set these up for YZ 125 2-stroke engines and include the correct spare jets so you can fine-tune for:
Full exhaust systems
Aftermarket reeds
Ported engines
Elevation changes
You’re getting a performance-oriented setup — not a warehouse carb.