Fine-tune your Keihin PWK or PE carburetor with this comprehensive 30-piece jetting and nozzle modification kit. Specifically developed for popular PWK21–34 and PE26/28 carburetors used on dirt bikes, off-road motorcycles and performance scooters, this set gives you the essential jets and needle components needed to optimize fuel delivery across the entire throttle range.
Whether you are rejetting after an exhaust or air filter upgrade, adapting to different altitudes, or building a high-performance engine, this kit provides the flexibility to achieve smooth idle, strong mid-range response and full-throttle power.
Kit Contents & Function Breakdown
- Main Jets – 10 pieces (#105 – #130)
Sizes included: #105, #108, #110, #112, #115, #118, #120, #122, #125, #130
These jets control fuel delivery at high RPM and wide-open throttle. Larger numbers mean larger orifice size and richer fuel mixture. - Pilot / Slow Jets – 10 pieces (#38 – #68)
Sizes included: #38, #40, #42, #45, #48, #52, #55, #58, #62, #65, #68
Responsible for idle, low-speed and small-throttle fuel supply. Critical for clean starting, stable idle and smooth off-idle response. - Needle Jets – 7 pieces
Types: JJD, JJE, JJG, JJH, JJJ, JFQ, JFN
These needle jets control mid-range fuel delivery (partial throttle). Different needle jet codes produce different fuel curves, allowing precise mid-range tuning. - Needle Seat & Hardware
- 8H needle seat (base)
- Small copper bushing / guide sleeve
- E-clip (retaining clip)
Secures the jet needle and prevents it from vibrating loose during operation.
Compatible Carburetors
Keihin PWK21, PWK24, PWK26, PWK28, PWK30, PWK32, PWK34
Keihin PE26, PE28
And other similar racing / performance carburetors commonly used on dirt bikes, off-road motorcycles and modified scooters.
Key Features
- Complete jetting range for low, mid and high throttle positions
- High-quality aftermarket jets precision-machined for accurate fuel metering
- Ideal for performance modifications, altitude compensation and engine upgrades
- Easy to use for both professional tuners and experienced DIY riders
- Produced by an experienced Chinese manufacturer specializing in motorcycle carburetor performance parts, with products exported to customers worldwide
Why Choose This Kit
As a professional Chinese factory focused on motorcycle and off-road performance parts, we provide accurate sizing, consistent quality and competitive pricing. This 30-piece PWK/PE jet kit gives builders and riders the practical range of jets needed to properly tune Keihin-style carburetors without buying individual pieces at high cost.
Use this kit to eliminate lean or rich conditions, improve throttle response, and unlock better power delivery from your modified engine.
