Your cart is empty
Start ShoppingHot Cams 7.48mm Valve Shim Refills - Precision Ground Shim Kit Refill for Engine Adjustments
Fits your
May not fit your
Description
Ensure optimal engine performance with Hot Cams' precision-engineered 7.48mm valve shims. These hardened steel refills deliver accurate valve clearance adjustments for both shim-under-bucket and shim-over-bucket engines, enhancing power delivery and reliability.
Key Features
- 7.48mm Diameter: Perfectly sized for Hot Cams' original shim kits, ensuring precise valve clearance control.
- Hardened Steel Construction: Durable, wear-resistant material for long-lasting performance under high-stress engine conditions.
- 2.90mm Thickness: Optimized thickness for balanced valve train dynamics and efficient combustion.
- 5-Piece Refill Pack: Cost-effective bulk refill solution for repeated valve adjustment tasks.
- Precision Ground Surfaces: Ensures consistent fit and accurate clearance settings for maximum engine efficiency.
Why Choose This Product
These shims are specifically designed for Hot Cams' 7.48mm shim kits, offering unmatched accuracy for valve train adjustments. The hardened steel material resists deformation from heat and vibration, maintaining proper clearance over time. Ideal for performance enthusiasts and professional mechanics seeking reliable, precision-engineered solutions for high-output engines. With a compact 0.1lb package, these refills are easy to store and transport while delivering critical support for engine longevity and power output.
Delivery
Checking availability...
Estimated arrival
Order within to ship today
Orders ship
Shipping to
Enter your ZIP code for delivery estimate
Price Match Guarantee
Found it cheaper?
Log in to submit a price match request.
Price
Quantity
Free Shipping $100+
14-Day Returns
Secure Checkout
Price Match
Complete the Build
This item
$8.99
In Cart
Ensure optimal engine performance with Hot Cams' precision-engineered 7.48mm valve shims. These hardened steel refills deliver accurate valve clearance adjustments for both shim-under-bucket and shim-over-bucket engines, enhancing power delivery and reliability.
Key Features
- 7.48mm Diameter: Perfectly sized for Hot Cams' original shim kits, ensuring precise valve clearance control.
- Hardened Steel Construction: Durable, wear-resistant material for long-lasting performance under high-stress engine conditions.
- 2.90mm Thickness: Optimized thickness for balanced valve train dynamics and efficient combustion.
- 5-Piece Refill Pack: Cost-effective bulk refill solution for repeated valve adjustment tasks.
- Precision Ground Surfaces: Ensures consistent fit and accurate clearance settings for maximum engine efficiency.
Why Choose This Product
These shims are specifically designed for Hot Cams' 7.48mm shim kits, offering unmatched accuracy for valve train adjustments. The hardened steel material resists deformation from heat and vibration, maintaining proper clearance over time. Ideal for performance enthusiasts and professional mechanics seeking reliable, precision-engineered solutions for high-output engines. With a compact 0.1lb package, these refills are easy to store and transport while delivering critical support for engine longevity and power output.| SKU | GM399CC8AE |
|---|---|
| MPN | 5PK748290 |
| Brand | Hot Cams |
| Category | Engine |
0.0
0 reviews
0
Log in to write a review.
Reviews
No reviews yet. Be the first to review this product!
Featured Review
| Make | Model | Years |
|---|---|---|
| Honda | CRF250R / CRF250X / CRF250L / CRF250L Rally / CRF300L (and other 250/300 DOHC models using 7.48 mm shims) | 2002-2024 |
| Honda | CRF450R / CRF450X / CRF450L/RL and many 450R-based engines | 2002-2024 |
| Yamaha | YZ250F / WR250F / YZ450F / WR450F and various street models (e.g., FZ6, R6, some FZ1) | 1999-2024 |
| Kawasaki | KX250F / KX450F and many Ninja/ZX street models (e.g., ZX‑6R, ZX‑10R depending on year) | 2000-2024 |
| Suzuki | RM‑Z250 / RM‑Z450 and many GSX‑R/GSX‑F inline‑4 engines using 7.48 mm shims | 2000-2024 |
| KTM / Husqvarna / GasGas (selected models) | Some 250/350/450 4‑stroke engines that use 7.48 mm shims | 2004-2024 |
Frequently Asked Questions
They are 7.48 mm diameter valve shims with a thickness of 2.90 mm. Each pack contains five shims of this single thickness.
It fits any motorcycle or ATV engine that uses 7.48 mm diameter valve shims. Check your service manual or measure an existing shim to confirm diameter and required thickness before ordering.
No. This is a refill pack of five shims in one thickness. It is intended to restock a main Hot Cams 7.48 mm master shim kit or supplement your existing shim assortment.
You need standard hand tools plus a feeler gauge and a micrometer or caliper to measure shims and valve clearances. For most engines the camshafts must be removed, so follow the factory service manual closely.
They are hardened, precision‑ground steel shims made to OEM‑equivalent dimensions. Many professional shops and riders use them without issue as a cost‑effective alternative to OEM shims.
Installation Guide
Difficulty
Medium
Est. Time
2 hr 0 min
Tools Required
- Metric socket set and ratchet
- Allen/hex keys (metric)
- Torque wrench (inch‑lb and/or ft‑lb depending on engine)
- Feeler gauge set (metric, typically 0.04–0.40 mm range)
- Micrometer or digital caliper (to double‑check shim thickness)
- Magnet pick‑up tool or small pick (for lifting shims)
- Service manual for your specific vehicle
- Clean shop rags and parts tray
Pro Tips
- Measure and write down every clearance and every shim size in a chart before changing anything.
- Work on one cylinder or one cam at a time to avoid mixing parts.
- Use a small magnet to remove and install shims—this reduces the chance of dropping a shim into the engine.
- Always rotate the engine by hand at least two full revolutions and re‑check clearances before final assembly.
- Double‑check shim thickness with a micrometer; markings can be hard to read after use.
- Have several nearby shim sizes on hand (via refill packs) so you can dial clearances closer to the middle of the spec.
Common Mistakes to Avoid
- Not recording original shim locations and sizes before swapping
- Mixing up intake and exhaust shims or buckets
- Measuring valve clearance with the engine not at the correct TDC position
- Failing to re‑torque cam caps to spec and in proper sequence
- Allowing dirt/debris to fall into the head while shims are removed
- Reusing old cam cover gasket or sealing surfaces without inspection
Comparison vs Stock/OEM
Functionally equivalent to OEM 7.48 mm valve shims but sold in convenient refill packs for common sizes.
Improvements
- Lower cost per shim than most OEM dealers
- Refill pack format lets you stock high‑demand sizes instead of buying shims individually
- Clearly marked thickness for quick identification when used with a master kit
Considerations
- Thickness increments are standardized; some OEM catalogs offer additional in‑between sizes.
- Always verify clearances after installation; do not rely solely on printed shim markings.
Durability & Warranty
Expected Lifespan
Designed to last the service life of the valve train when clearances are kept in spec; in practice, shims are reused through many valve services unless damaged.
Warranty
Typical aftermarket parts warranty through retailer/manufacturer (commonly limited warranty against manufacturing defects; check seller terms).
Maintenance
Inspect for surface pitting, scoring, or deformation during each valve service; replace any shim showing visible wear or damage.
What Others Are Saying
Reviews from across the web
