Ensure Optimal Performance for Your Mikuni Carburetor This comprehensive 14-piece pilot jet kit is designed for precision tuning and maintenance of popular Mikuni carburetor models. The kit includes a full range of slow jet sizes from 10# to 42.5#, allowing you to expertly calibrate your carburetor's low-speed fuel mixture for smoother idling, better throttle response, and enhanced overall engine performance. Key Features & Benefits: Wide Compatibility: Specifically engineered to fit Mikuni RS, HSR, HS, and TM series carburetors, including the common VM28/486 model. Complete Size Range: The included assortment covers a broad spectrum of pilot jet sizes (10# - 42.5#), making it an essential tool for troubleshooting, tuning, and repairing various motorcycle, ATV, and dirt bike engines. Precision Engineering: Each jet is machined to exact OEM specifications from high-quality materials, ensuring a perfect fit and reliable fuel flow. Ideal Solution: Whether you're a professional mechanic or a DIY enthusiast, this kit provides everything you need to fix lean or rich fuel mixture issues, resolve idle problems, and adapt your carburetor to aftermarket modifications or different altitude conditions. Application: This replacement pilot jet kit is perfect for a wide range of motorcycles, ATVs, dirt bikes, and other small engine vehicles equipped with compatible Mikuni carburetors.