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Start ShoppingHot Cams 7.48mm Valve Shim Refill Pack - 350 Piece Bulk Shim Kit for Engine Performance
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Description
Upgrade your engine's performance with Hot Cams' premium valve shim refills. This 350-piece bulk pack provides precise, hardened steel shims in 7.48mm diameter for accurate valve clearance adjustments, ensuring smooth operation and longevity for high-performance engines.
Key Features
- 7.48mm Diameter Shims: Precision-engineered for compatibility with Hot Cams valve kits, ensuring optimal valve train performance.
- 350-Piece Bulk Refill: Economical bulk packaging with assorted thicknesses (1.20-3.50mm in 0.05mm increments) for versatile tuning options.
- Hardened Steel Construction: Durable, wear-resistant material for long-lasting performance in high-stress engine environments.
- Country of Origin: Manufactured in Taiwan or China (check package label for exact batch details).
- Bulk Packaging: Designed for refilling Hot Cams organizers, ideal for mechanics and enthusiasts needing large quantities.
Why Choose This Product
Whether you're tuning a high-performance engine or maintaining a stock setup, these valve shims offer unmatched precision and reliability. The extensive thickness range (1.20-3.50mm) allows for fine-tuning valve clearances to match specific engine requirements. The bulk refill format saves time and cost compared to purchasing individual shims, while the hardened steel construction ensures resistance to wear and deformation under extreme operating conditions. Perfect for professional mechanics and DIY enthusiasts seeking dependable, high-quality engine components.
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Upgrade your engine's performance with Hot Cams' premium valve shim refills. This 350-piece bulk pack provides precise, hardened steel shims in 7.48mm diameter for accurate valve clearance adjustments, ensuring smooth operation and longevity for high-performance engines.
Key Features
- 7.48mm Diameter Shims: Precision-engineered for compatibility with Hot Cams valve kits, ensuring optimal valve train performance.
- 350-Piece Bulk Refill: Economical bulk packaging with assorted thicknesses (1.20-3.50mm in 0.05mm increments) for versatile tuning options.
- Hardened Steel Construction: Durable, wear-resistant material for long-lasting performance in high-stress engine environments.
- Country of Origin: Manufactured in Taiwan or China (check package label for exact batch details).
- Bulk Packaging: Designed for refilling Hot Cams organizers, ideal for mechanics and enthusiasts needing large quantities.
Why Choose This Product
Whether you're tuning a high-performance engine or maintaining a stock setup, these valve shims offer unmatched precision and reliability. The extensive thickness range (1.20-3.50mm) allows for fine-tuning valve clearances to match specific engine requirements. The bulk refill format saves time and cost compared to purchasing individual shims, while the hardened steel construction ensures resistance to wear and deformation under extreme operating conditions. Perfect for professional mechanics and DIY enthusiasts seeking dependable, high-quality engine components.| SKU | GMB1F90B16 |
|---|---|
| MPN | 5PK748350 |
| Brand | Hot Cams |
| Category | Engine |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Multi-brand | Any engine using 7.48 mm bucket/shim valve train | 1990+ |
Frequently Asked Questions
It contains 7.48 mm diameter shims, which are used in many modern 4‑stroke motorcycles and ATVs that use 7.48 mm bucket/shim style valve trains.
No. 5PK748350 is a refill pack meant to restock an existing Hot Cams 7.48 mm shim kit. It is bulk shims, not the plastic organizer box.
Check your service manual or existing shims. If your engine uses 7.48 mm diameter valve shims, this refill pack will work regardless of brand, as long as the thickness you need is included.
They are hardened steel shims intended to meet or exceed OEM spec. Many shops use Hot Cams shims interchangeably with OEM without issues.
Yes, the shims are marked or bagged by thickness. Many techs still verify thickness with a micrometer or digital caliper during precision builds.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- Service manual for your specific vehicle
- Metric socket set and ratchet
- Torque wrench (inch‑lb / Nm as specified)
- Feeler gauge set (metric)
- Magnet pick‑up tool or small pick (for removing shims)
- Micrometer or digital caliper (to verify shim thickness if needed)
- Clean shop rags
- Valve cover gasket (new, if required by OEM spec)
Pro Tips
- Work on a cold engine; most valve clearance specs are for room‑temperature engine
- Lay out cams, caps, and shims in order and label each cylinder/valve to avoid confusion
- Use a paint pen or diagram to note current shim sizes and target clearances before swapping
- Lightly oil the shims before installation so they don’t stick to tools or move during assembly
- Rotate engine by hand two full revolutions and recheck all clearances before finishing
Common Mistakes to Avoid
- Mixing up shim locations and not recording original sizes/positions
- Not rechecking valve clearances after installing new shims
- Turning the engine over with tools or parts left in the head area
- Using the wrong shim diameter (must be 7.48 mm for this pack)
- Over‑torquing cam cap bolts and damaging threads in the head
Comparison vs Stock/OEM
Functionally equivalent to OEM hardened steel valve shims but offered as an assorted bulk pack for repeated services.
Improvements
- Much lower cost per shim compared to buying OEM individual shims
- Wider assortment of sizes on hand reduces downtime waiting for single OEM shims
- Ideal for shops and riders doing frequent valve services or multiple engines
Considerations
- Requires that your engine uses 7.48 mm shims; some models use 9.48 mm, 8.90 mm, or other sizes
- Thickness increments and range should be checked against your OEM needs for very specific builds
Durability & Warranty
Expected Lifespan
Typically lasts for the service life of the valve train component; shims are rarely replaced due to wear and are instead swapped only to adjust clearance.
Warranty
Standard Hot Cams limited warranty (exact terms vary by region; refer to packaging or distributor).
Maintenance
No direct maintenance. Inspect during valve checks for damage or pitting; replace if any abnormal wear is found.
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