Looking for the best racing shim kits to enhance your engine’s performance? We’ve curated a list of the top 10 racing shim kits, offering durable materials, easy-to-use designs, and precision adjustments to help you find the perfect match for your needs.
Racing shim kits are essential tools for engine tuning and maintenance. They help you adjust valves and rocker arms with precision, ensuring smooth performance and longevity. Whether you’re a racing enthusiast or a professional mechanic, the right shim kit can make all the difference.
We’ve handpicked the best racing shim kits to save you time and effort. From durable materials to easy-to-use designs, these kits are built to last and perform flawlessly. Dive in to find the perfect match for your needs and take your engine’s performance to the next level.
List of Top 10 Racing Shim Kits
| Image | Title | Best For | Price |
|---|---|---|---|
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ProX Racing Parts 29.VSA890 8.90mm Size 1.72mm-2.60mm Thick Valve Shim Kit, Black |
This kit is for dirt bike owners. It helps you fix valves fast. Each shim is strong and tough. They are made in Japan. These parts last a long time. |
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Hot Cams 7.48mm Complete Shim Kit HCSHIM01 for Honda CRF Kawasaki KX Suzuki RMZ Yamaha WR YZ Dirt Bikes |
This Hot Cams 7.48mm Complete Shim Kit is perfect for dirt bike owners who need reliable valve maintenance. It’s ideal for Honda, Kawasaki, Suzuki, and Yamaha models, ensuring easy identification and durable performance. |
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Hot Cams 8.90mm Complete Shim Kit HCSHIM00 for Various KTM Dirt Bikes 2005-2017 |
This Hot Cams Shim Kit is perfect for KTM dirt bike owners who need reliable valve maintenance. It’s ideal for models from 2005 to 2017, ensuring smooth performance and easy identification with laser-etched sizes. |
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Hot Cams 9.48mm Complete Shim Kit HCSHIM02 for Arctic Cat DVX 400 ATV Honda TRX ATV Kawasaki KFX ATV Suzuki LT-R ATV Yamaha YFZ ATV, Regular |
This kit is for ATV owners. It helps keep engines running smooth. It fits many popular models. This kit makes valve maintenance easy. The shims are strong. They have clear sizes. It is a great tool. It helps you save time. |
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Prox Racing Parts 29.VSA948 9.48mm Size 1.20mm-3.50mm Thick Valve Shim Kit, Black |
This valve shim kit is perfect for car enthusiasts who want reliable, high-quality parts. It’s ideal for those working on specific vehicles, offering durable, heat-treated shims that are clearly marked for easy use. |
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ProX Racing Parts 29.VSA748 7.48mm Size 1.20mm-3.50mm Thick Valve Shim Kit |
The ProX Racing Parts Valve Shim Kit is perfect for anyone who works on engines. It’s great for fixing or tuning motorcycles, ATVs, or small engines. |
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152 Pieces Auto Alignment Body Shims 1/16″ 1/64″ 1/32″ 1/8″ Car Alignment Shims Spacers Assortment Kit |
This kit is perfect for car owners and mechanics who need to fix and align wheels quickly. It has many sizes and is made from strong steel for long-lasting use. Keep it in your garage to save time on repairs and make your work easier and faster. |
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Ford Racing M6529A302 Rocker Arm Shim Kit |
This Ford Racing M6529A302 Rocker Arm Shim Kit is perfect for car enthusiasts who want to upgrade their engine. It’s ideal for those using bolt-on roller rocker arms. |
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Hot Cams 10.00mm Complete Valve Shim Kit HCSHIM31 for Various KTM Adventure Street Super Duke & Enduro Dirt Bikes |
This Hot Cams Valve Shim Kit is perfect for KTM riders who want reliable performance. It’s easy to install and fits many KTM models, so you can keep your bike running smoothly. |
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ARC Racing 6057S FITS GX200/Clone Crank Shim Kit |
This is perfect for GX200 and Clone engine users who want a clean fit and better crank setup. It is a smart pick for racing builds and small engine work. |
Detailed Reviews
Discover the top 10 Racing Shim Kits carefully selected for performance and value. Each kit is reviewed for durability, precision, and ease of use, ensuring you find the perfect match for your needs. Whether you’re a racing enthusiast or a professional mechanic, this guide will help you make the right choice.
1. ProX Racing Parts 29.VSA890 8.90mm Size 1.72mm-2.60mm Thick Valve Shim Kit, Black

The ProX Racing Parts 29.VSA890 Valve Shim Kit is a must-have for engine tuning. It includes 8.90mm shims with varying thicknesses from 1.72mm to 2.60mm. Each shim is clearly stamped with its thickness for easy identification.
These shims are heat-treated for maximum durability and hardness. They are made in Japan, ensuring high-quality craftsmanship. The kit is lightweight, weighing only 0.5 pounds, making it easy to handle.
This kit is perfect for precise engine adjustments. It offers reliable performance and long-lasting use.
| Pros | Cons |
|---|---|
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Perfect For:
This kit is for dirt bike owners. It helps you fix valves fast. Each shim is strong and tough. They are made in Japan. These parts last a long time.
Ready to Purchase?
2. Hot Cams 7.48mm Complete Shim Kit HCSHIM01 for Honda CRF Kawasaki KX Suzuki RMZ Yamaha WR YZ Dirt Bikes

Hot Cams 7.48mm Complete Shim Kit is made for your dirt bike valve needs. It fits many Honda, Kawasaki, Suzuki, and Yamaha models. This kit has shims from 1.20mm to 3.50mm in 0.05mm steps. Each shim size is laser etched for easy reading. Made from strong 4140 steel.
You get 3 shims in each size. It works with many bike models from 2001 to 2018. The kit comes with a 1-year warranty for peace of mind.
| Pros | Cons |
|---|---|
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Perfect For:
This Hot Cams 7.48mm Complete Shim Kit is perfect for dirt bike owners who need reliable valve maintenance. It’s ideal for Honda, Kawasaki, Suzuki, and Yamaha models, ensuring easy identification and durable performance.
Ready to Purchase?
3. Hot Cams 8.90mm Complete Shim Kit HCSHIM00 for Various KTM Dirt Bikes 2005-2017

The Hot Cams 8.90mm Complete Shim Kit HCSHIM00 is made for precise valve maintenance on various KTM dirt bikes from 2005 to 2017. It includes a wide range of shim sizes from 1.72mm to 2.60mm in 0.04mm steps, with three shims per size.
Each shim is laser etched on top for quick and easy size identification. The kit is forged from strong 4140 steel for durability. It fits many KTM models, including the 250 SX-F, 350 EXC-F, and 450 SX-F.
This kit covers all your valve needs. It comes with a 1-year warranty. Perfect for keeping your bike running smooth and strong.
| Pros | Cons |
|---|---|
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Perfect For:
This Hot Cams Shim Kit is perfect for KTM dirt bike owners who need reliable valve maintenance. It’s ideal for models from 2005 to 2017, ensuring smooth performance and easy identification with laser-etched sizes.
Ready to Purchase?
4. Hot Cams 9.48mm Complete Shim Kit HCSHIM02 for Arctic Cat DVX 400 ATV Honda TRX ATV Kawasaki KFX ATV Suzuki LT-R ATV Yamaha YFZ ATV, Regular

The Hot Cams 9.48mm Complete Shim Kit HCSHIM02 gives you a full set for valve care. It fits many ATV models and helps make service fast and easy.
It includes sizes from 1.20mm to 3.50mm in 0.05mm steps. Each shim has a laser-etched size and is made from 4140 steel.
You get 3 shims in each size. It is built for quick use. It comes with a 1-year warranty.
| Pros | Cons |
|---|---|
|
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Perfect For:
This kit is for ATV owners. It helps keep engines running smooth. It fits many popular models. This kit makes valve maintenance easy. The shims are strong. They have clear sizes. It is a great tool. It helps you save time.
Ready to Purchase?
5. Prox Racing Parts 29.VSA948 9.48mm Size 1.20mm-3.50mm Thick Valve Shim Kit, Black

The Prox Racing Parts valve shim kit is built for precision. Each shim is clearly stamped with thickness size for easy selection.
These shims are heat treated to ensure hardness and maximum durability. Country of Origin: JAPAN, they meet high-quality standards.
Fit type: Vehicle Specific. Easy to use. Built to last.
| Pros | Cons |
|---|---|
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Perfect For:
This valve shim kit is perfect for car enthusiasts who want reliable, high-quality parts. It’s ideal for those working on specific vehicles, offering durable, heat-treated shims that are clearly marked for easy use.
Ready to Purchase?
6. ProX Racing Parts 29.VSA748 7.48mm Size 1.20mm-3.50mm Thick Valve Shim Kit

The ProX Racing Parts 29.VSA748 Valve Shim Kit is a must-have for engine maintenance. It includes shims in various thicknesses, ranging from 1.20mm to 3.50mm. Each shim is clearly stamped with its size for easy identification.
These shims are heat-treated for maximum durability and hardness, ensuring long-lasting performance. The kit is made in Japan, guaranteeing high-quality craftsmanship.
With a package weight of just 0.9 pounds, this valve shim kit is lightweight and easy to handle. It’s a reliable choice for racing enthusiasts and mechanics alike, offering precision and durability for optimal engine performance.
| Pros | Cons |
|---|---|
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Perfect For:
The ProX Racing Parts Valve Shim Kit is perfect for anyone who works on engines. It’s great for fixing or tuning motorcycles, ATVs, or small engines.
Ready to Purchase?
7. 152 Pieces Auto Alignment Body Shims 1/16″ 1/64″ 1/32″ 1/8″ Car Alignment Shims Spacers Assortment Kit

This 152-piece shim kit is made from strong zinc-plated steel. It resists rust and corrosion for long-lasting use. The pieces are sturdy and won’t break or fade.
These shims help you adjust car wheels and body parts easily. They come in a clear storage box with labels to save you time.
| Pros | Cons |
|---|---|
|
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Perfect For:
This kit is perfect for car owners and mechanics who need to fix and align wheels quickly. It has many sizes and is made from strong steel for long-lasting use. Keep it in your garage to save time on repairs and make your work easier and faster.
Ready to Purchase?
8. Ford Racing M6529A302 Rocker Arm Shim Kit

The Ford Racing M6529A302 Rocker Arm Shim Kit helps you set up bolt-on roller rocker arms with care. It is small, light, and made for a clean fit.
It is easy to use. It is easy to carry. It is made for simple setup.
This kit has a compact size and a very light weight. It comes from China and is built for practical use.
| Pros | Cons |
|---|---|
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Perfect For:
This Ford Racing M6529A302 Rocker Arm Shim Kit is perfect for car enthusiasts who want to upgrade their engine. It’s ideal for those using bolt-on roller rocker arms.
Ready to Purchase?
9. Hot Cams 10.00mm Complete Valve Shim Kit HCSHIM31 for Various KTM Adventure Street Super Duke & Enduro Dirt Bikes

The Hot Cams 10.00mm Complete Valve Shim Kit is a must-have for KTM bike owners. It’s 100% new and built to meet OEM specs. This kit ensures perfect fit and performance.
It works with many KTM models, from adventure to dirt bikes. The kit is compatible with bikes like the 1190 Adventure and 690 Duke. It’s a reliable replacement for worn parts.
A 1-year warranty backs this product. If there’s an issue, we’ll replace it. Trust this kit for smooth engine performance.
| Pros | Cons |
|---|---|
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Perfect For:
This Hot Cams Valve Shim Kit is perfect for KTM riders who want reliable performance. It’s easy to install and fits many KTM models, so you can keep your bike running smoothly.
Ready to Purchase?
10. ARC Racing 6057S FITS GX200/Clone Crank Shim Kit

The ARC Racing 6057S is a crank shim kit. It fits GX200 and clone engines. This kit is easy to use.
This product is made by ARC Racing. It is designed for lawn and patio use. The part number is 6057S.
You can find this kit with the EAN 0654329066690. It also has the UPC 654329066690. This shim kit is a must-have for engine maintenance.
| Pros | Cons |
|---|---|
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Perfect For:
This is perfect for GX200 and Clone engine users who want a clean fit and better crank setup. It is a smart pick for racing builds and small engine work.
Ready to Purchase?
Buying Guide
Racing shim kits are essential tools for engine tuning and maintenance. They help you adjust valves and rocker arms with precision, ensuring smooth performance and longevity.
Choosing the right racing shim kit can be a game-changer for your engine’s performance. With so many options available, it’s essential to know what to look for. Here’s a simple guide to help you make the best choice:
- Material Quality: Look for shims made from durable materials like 4140 steel or heat-treated options. These ensure longevity and reliable performance.
- Size Range: Check the shim thickness range to match your engine’s needs. Kits with varied sizes offer more flexibility for adjustments.
- Ease of Identification: Choose shims with clear markings or laser etching for quick and easy size identification during use.
- Compatibility: Ensure the kit is compatible with your vehicle or engine model. Vehicle-specific kits save time and effort.
- Warranty: Opt for kits with a warranty for added peace of mind and assurance of quality.
- Portability: Lightweight and compact kits are easier to handle and store, making them ideal for on-the-go use.
- Brand Reputation: Trust well-known brands with a history of producing high-quality and reliable products.
With these factors in mind, you’ll find the perfect racing shim kit to enhance your engine’s performance and keep it running smoothly.