Strongthium Carburetor Jet Kit 48-Piece for Mikuni-Style Carbs — Main & Pilot Jets, Dual Format (Round + Hex)

The Strongthium 48Pcs Main & Pilot Slow Carburetor Jet Kit supplies a wide, precision-graded selection of main and pilot jets to tune Mikuni-style carburetors for street, ATV, dirt, and vintage motorcycle engines.

Whether you’re rejetting after an exhaust, intake, altitude change, or simply restoring peak throttle response, this aftermarket kit gathers the commonly used sizes for fast, accurate carburetor rejetting. It covers a broad range of Mikuni TM, VM, HS, HSR, RS and related models and includes both large round and large hex main jets plus multiple pilot sizes for fine low-speed metering. The set is compact, organized, and intended for DIY tuners, mechanics, and hobbyists who need granular control over fuel delivery across many two- and four-stroke applications.

Which carburetors does this kit work with?

The kit targets many Mikuni family carbs and common clones: TM series flat-slide models, VM round- and smoothbore types, HS/HSR flats with accelerator pump, and RS flat-slide racks. It also lists compatible needle-jet series and references common OEM makes so you can quickly verify fitment.

• Compatible models: TM24/TM32/TM34/TM35/TM36/TM38/TMX and more
• VM types: VM16/VM29/VM33 round and smoothbore variants
• HS/HSR: HS40 flat slide, HSR42/45/48 new style
• RS flats: RS34/RS36/RS38/RS40 rack styles
• Needle jet compatibility: series 171, 188, 196 with large round; 568, 640, 723

How many jet sizes are included and what range do they cover?

This 48-piece assortment gives you broad coverage of common main and pilot sizes so you can step up or down in small increments. The set includes two formats of main jets (large round and large hex) plus multiple pilot jets for VM and TM-style carbs to dial idle and transition fuel mixture.

• 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
• VM pilot jets: 25,30,35,40,45,50,55,60
• TM pilot jets: 17.5,20,25,30,35,40

What applications and vehicles can benefit from this kit?

The assortment is suitable for broad street and off-road tuning where Mikuni-style carburetors are used, including aftermarket and OEM-replacement carbs on popular motorcycles and ATVs. It’s useful after modifications or when changing altitude or fuel quality—any situation where richer or leaner jets are required.

• Motorcycles: many Suzuki, Kawasaki, Yamaha, Honda models using Mikuni carbs
• ATVs and UTVs: common four-stroke and two-stroke machines
• Dirt bikes and off-road: fine-tuning for power delivery and throttle response
• Classic restorations: replacing missing or incorrect jets during rebuilds

Who is this for: This Strongthium kit is aimed at home mechanics, track-side tuners, restoration enthusiasts, and professional shops that need a reliable, compact selection of main and pilot jets for Mikuni-style carburetors. It’s especially helpful when you want to test multiple jet sizes quickly without ordering individual parts, and for anyone working on mixed fleets where different carb models are present. The kit gives practical flexibility for tuning fuel metering across a wide range of street, trail, and race environments without claiming to replace professional dyno tuning—use it to get close, then refine as needed.