HRJZF 50pc Main & Slow Jet Kit for PWK CVK PE Carburetors | Fits Honda, Yamaha, Kawasaki, Suzuki

HRJZF 50-piece jet kit for carburetors

Upgrade your bike’s carburetor tuning with the HRJZF 50-piece jet kit. This thoughtfully designed collection covers slow pilot jets from 32 to 55 and a broad range of main jets to suit PWK, CVK, PE-type carbs, as well as compatible brands like OKO, KOSO, and Polini. Whether you’re chasing crisper idle, steadier midrange, or improved throttle response, this kit offers flexible options without promising guaranteed results. Use it as a tuning aid to explore different fuel flow configurations and find what best matches your riding style and conditions.

Quality you can feel when you handle each piece. Brass construction with burr-free threads and consistent finishes ensures smooth installation and reliable seating. The precise finishes support reliable fuel flow, a key factor when you’re fine-tuning for daily riding or spirited runs. This kit is designed to supplement proper carb setup and testing—not to replace professional service when needed.

What’s inside

• Slow pilot jets in sizes 32, 35, 38, 40, 42, 45, 48, 50, 52, 55
• Main jets for PWK 21mm–34mm: 70, 78, 80, 82, 85, 88, 90, 92, 95, 98, 100, 105, 108, 110, 115, 120, 125, 130, 135, 140, 155, 158, 160, 162, 165, 168, 170, 172, 175, 178
• Main jets for PWK 28mm–42mm: 100, 105, 108, 110, 115, 120, 125, 130, 135, 140, 155, 158, 160, 162, 165, 168, 170, 172, 175, 178
• Thread details and dimensions to aid selection: 6 x 0.75 mm pitch for slow jets; nut diameters around 5 mm; slow jets length ~28 mm; main jets hole depth ~8 mm

Core specs and fit

• Brass construction with burr-free threads for easy installation and durable seating
• Wide compatibility with PWK, CVK, PE carb types, OKO, KOSO, Stage-6, Polini, and more
• Note: Not compatible with CV, VE, or CVK carbs above 3 cm in size; verify your carburetor before ordering

Real-world use cases

In real-world riding, you might notice changes in idle stability, throttle response, or midrange delivery when experimenting with jet sizes. The HRJZF kit is designed to give you practical options to tailor fuel flow to your bike and riding conditions. Use caution: make small changes, test on safe routes, and keep adjustments within a reasonable range.

Brand coverage includes popular models such as Honda CRF and CBR series, Yamaha YZF line, Kawasaki Ninja and KX models, Suzuki RM/GSX families, and riders of KTM, BMW, Ducati, Triumph, Aprilia, and Agusta. Always compare your original jet sizes and consult carburetor documentation to determine the best match for your setup.