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Start ShoppingHot Cams 5PK948225 Shim Package Refills - 1.20mm-3.20mm Chromoly Steel Valve Shims for High-Performance Engines
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Description
Upgrade your engine's performance with Hot Cams' premium Shim Package Refills. These high-strength chromoly steel shims deliver precise valve clearance adjustments for enhanced power, efficiency, and reliability in high-performance engines.
Key Features
- Comprehensive Size Range: 25 shims in 0.05mm increments from 1.20mm to 3.20mm for perfect fitment across valve sizes
- High-Strength Material: Chromoly steel construction ensures durability and resistance to heat, wear, and fatigue in demanding engine environments
- Standardized Diameter: 9.48mm shim diameter for universal compatibility with OEM valve components
- Assorted Sizes: Complete set of varying thicknesses simplifies maintenance and reduces inventory needs
Why Choose This Product
Hot Cams' Shim Package Refills are engineered for precision and performance. The chromoly steel construction provides long-lasting durability while the precise thickness increments ensure accurate valve clearance adjustments. This complete set eliminates the need for multiple single-size shims, saving time and effort during engine maintenance. Ideal for racers and performance enthusiasts seeking reliable, high-quality solutions for valve train optimization.
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Upgrade your engine's performance with Hot Cams' premium Shim Package Refills. These high-strength chromoly steel shims deliver precise valve clearance adjustments for enhanced power, efficiency, and reliability in high-performance engines.
Key Features
- Comprehensive Size Range: 25 shims in 0.05mm increments from 1.20mm to 3.20mm for perfect fitment across valve sizes
- High-Strength Material: Chromoly steel construction ensures durability and resistance to heat, wear, and fatigue in demanding engine environments
- Standardized Diameter: 9.48mm shim diameter for universal compatibility with OEM valve components
- Assorted Sizes: Complete set of varying thicknesses simplifies maintenance and reduces inventory needs
Why Choose This Product
Hot Cams' Shim Package Refills are engineered for precision and performance. The chromoly steel construction provides long-lasting durability while the precise thickness increments ensure accurate valve clearance adjustments. This complete set eliminates the need for multiple single-size shims, saving time and effort during engine maintenance. Ideal for racers and performance enthusiasts seeking reliable, high-quality solutions for valve train optimization.| SKU | GMCA48706B |
|---|---|
| MPN | 5PK948225 |
| Brand | Hot Cams |
| Category | Engine |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Honda | CRF450R | 2009-2019 |
| Honda | CRF450RX | 2010-2019 |
| Kawasaki | KX450F | 2004-2009 |
| Yamaha | YZ450F | 2006-2013 |
Frequently Asked Questions
Contains 25 shims ranging from 1.20mm to 3.20mm in 0.05mm increments (most common sizes for 9.48mm applications)
Yes, cam timing changes almost always require different shim thicknesses to maintain proper valve clearances
Measure your current bucket-to-cam lobe clearance, then use the formula: New shim = Old shim + (measured clearance - spec clearance)
Yes, these are direct replacements for OEM shims on compatible models
Installation Guide
Difficulty
Medium
Est. Time
15 min
Tools Required
- micrometer or feeler gauge
- shim thickness gauge
- magnetized tweezers
Pro Tips
- Sort shims by size immediately
- Use shim thickness gauge tool for accuracy
- Measure each bucket multiple times
- Clean all shims with brake cleaner before measuring
Common Mistakes to Avoid
- Not cleaning shims before measuring
- Using wrong size micrometer
- Not verifying clearances after install
Comparison vs Stock/OEM
Higher quality chromoly steel vs OEM softer material
Improvements
- More precise thickness tolerances
- Greater durability under high spring pressure
- Laser-etched size markings for easy identification
Considerations
- Significantly cheaper than OEM individual shims
Durability & Warranty
Expected Lifespan
Same as OEM - lasts entire engine life with proper install
Warranty
1 year manufacturer defect warranty
Maintenance
Inspect during every valve adjustment (every 30-60 hours racing)
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