Strongthium Carburetor Jet Kit 48-Piece — Main & Pilot Jets for Mikuni Fit

Strongthium's 48-piece carburetor jet kit supplies a wide selection of main, pilot and slow jets to tune Mikuni-style and many other carburetors for street, ATV and offroad engines.

This comprehensive aftermarket kit gathers commonly used main jets, pilot/slo jets and compatible sizes for needle jet families so you can correct fuel delivery across a range of riding conditions. The parts cover round and hex main jets, VM and TM pilot jets, and sizes that match many Mikuni TM, VM, HSR, RS and HS flat/round slide applications. It’s intended as a parts resource for performance tuning, rejetting after intake or exhaust changes, or replacing lost jets during maintenance.

Which carburetors and vehicles does this kit fit?

The kit is designed to be broadly compatible with many Mikuni family carburetors plus other 2-stroke and 4-stroke street bikes, ATVs and offroad machines that use similar jet sizing. Check your carb model and jet type before ordering to ensure the included sizes match your requirements.

• Fits Mikuni TM24, TM32, TM34, TM35, TM36, TM38, TMX series
• Compatible with VM round-slide, HS/HSR flat-slide and RS rack-slide variations
• Suitable for Suzuki, Kawasaki, Yamaha, Honda, Polaris models using those carbs
• Useful for many small-displacement engines on dirt bikes, ATVs and scooters

What jet sizes and components are included?

The kit contains 48 jets across main and pilot/slow categories plus sizes aligned to common needle jet series, giving a broad tuning range without buying individual jets. Sizes are organized for quick selection when diagnosing lean or rich conditions.

• Large round main jets: 90 up to 190 in incremental sizes
• Large hex main jets: 130 to 280 covering larger bore needs
• VM pilot jets: 25–60; TM pilot jets: 17.5–40
• Compatible with needle jet series such as 171, 188, 196, 568, 640, 723

How does this help me tune my carburetor effectively?

Having multiple main and pilot sizes on hand lets you systematically test fuel mixtures for different elevations, airboxes, exhausts or riding styles. Swap jets in small increments, monitor throttle response and plug coloration, and keep the best-performing jets organized for future reference.

• Enables step-by-step rejetting to dial in midrange and top-end power
• Helps correct fuel mixture after hardware modifications or altitude changes
• Spares on hand reduce downtime from lost or damaged jets during service
• Works with common needle jet families to refine mixture across throttle

Who is this for: The Strongthium 48-piece jet kit is aimed at home tuners, mechanics, track teams and offroad riders who service Mikuni-style carburetors or need a comprehensive set of replacement jets. If you perform rejetting after engine, intake or exhaust modifications, ride varied elevations, or maintain multiple bikes, this kit gives practical size coverage to speed troubleshooting and setup. It is not a universal solution for every carburetor—confirm your carb model and jet thread/type before purchase to ensure compatibility.