YGQ Carburetor Jet Kit for Mikuni VM/TM/HSR – 42‑Piece Set, Main & Pilot Jets

YGQ 42-piece carburetor jet kit supplies a full range of main, pilot, and needle jets designed to tune Mikuni VM, TM, HSR and similar carburetors for improved fueling flexibility.

This comprehensive jet assortment from YGQ gives mechanics, racers and DIY tuners a straightforward way to experiment with fuel delivery across many Mikuni-style carburetors used on streetbikes, ATVs and off‑road machines. The set combines large round and hex main jets, multiple pilot slow jet sizes, and compatibility notes for popular needle jet series so you can find the best jetting for altitude, temperature or performance upgrades.

Which carburetors and machines will accept these jets?

The kit is built to work with a broad range of Mikuni families — VM round and smoothbore models, TM and TMX flat-slide carbs, and newer HSR series. It lists specific VM sizes (VM16–VM44) and many TM/HSR/RS models, and is commonly used on bikes from Honda, Suzuki, Kawasaki, Yamaha and Polaris that use those carburetors.

• Compatible VM models: VM16, VM18, VM20, VM22, VM24, VM26, VM28, VM30, VM32, VM34, VM36, VM38, VM44
• TM/TMX and HSR/RS flat-slide and smoothbore types noted in product details
• Fits many 2‑stroke and 4‑stroke street, ATV and off‑road applications

What jet sizes and types are included in the 42-piece kit?

The kit contains a wide spread of main jets in both large round and large hex formats, plus pilot slow jets suited for TM and VM styles. Needle jet series compatibility is listed to help you match the kit with your carburetor's needle and slide setup.

• Large round main jets: 90, 100, 110, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 190
• Large hex main jets: 130, 140, 150, 160, 170, 180, 200, 220, 240, 260, 280
• Pilot slow jets: TM sizes 17.5–40; VM sizes 25–60; compatible needle jets: 171, 188, 196 (large round) and 568, 640, 723

How does this kit help with tuning and troubleshooting?

Having a broad selection of jets on hand lets you make incremental changes to fueling so you can identify the correct mixture for different conditions. Instead of guessing or ordering single jets repeatedly, you can test multiple sizes quickly to correct lean or rich symptoms, improve throttle response and adapt to mod changes like air filters or exhausts.

• Swap main jets to address top‑end richness or lean runs
• Use pilot jets to tune idling, low throttle and transition behavior
• Match needle jet series to slide and needle profiles for midrange tuning

Are there installation or fit notes I should know before buying?

Check your carburetor model and current needle jet series before changing parts to ensure correct fit. Some jets are large-format or hex-style and are intended for specific venturi designs; follow manufacturer torque guidance and verify seating with a clean washer or crush washer where required.

• Confirm carb model (VM/TM/HSR/RS) and jet type before swapping
• Inspect threads and seating surfaces; use proper tools to avoid damage
• Test incremental changes on a dyno or measured ride to dial in final settings

This YGQ kit is ideal for riders, home mechanics and professional tuners who want a wide selection of jets to support Mikuni‑style carburetors across many street and off‑road platforms. It’s particularly useful if you modify intake or exhaust components, ride in different elevations or need to diagnose fueling issues quickly without repeatedly ordering individual jets. If you run a Mikuni VM, TM, HSR or similar carb on your Honda, Suzuki, Kawasaki, Yamaha or Polaris, this set offers the parts range to get you into the proper jetting window fast.