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Start ShoppingHot Cams 7.48mm Valve Shim Refill Pack - Precision Engine Adjustment for High-Performance Engines
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Description
Upgrade your engine's performance with Hot Cams' 7.48mm valve shim refill pack. These precision-engineered shims deliver accurate valve clearance adjustments, enhancing power output and engine efficiency for riders demanding top-tier performance.
Key Features
- 7.48mm Diameter Precision: Perfectly sized for Hot Cams 7.48mm shim kits and bucket-style valve systems.
- Thickness Range 1.20–2.50mm: 0.05mm increments ensure precise clearance adjustments for optimal engine operation.
- Universal Compatibility: Works with any engine using 7.48mm bucket/shim-under-bucket valve shims.
- Refill Assortment: Includes multiple shims per pack (exact counts vary by package).
- Durable Reusability: Reusable as long as undamaged and surfaces remain smooth.
- Easy Installation: Simplify valve clearance adjustments with pre-measured, high-quality shims.
Why Choose This Product
Hot Cams' shim refills deliver unmatched reliability for valve adjustment, ensuring peak engine performance and longevity. The precise 0.05mm thickness increments allow for fine-tuning, while the durable stainless steel construction resists wear and corrosion. Whether you're maintaining a high-performance motorcycle or modifying a racing engine, these shims provide the accuracy needed to maximize power and efficiency. Their universal compatibility makes them a versatile addition to any mechanic's toolkit, saving time and ensuring consistent results. Trust Hot Cams for precision-engineered solutions that meet the demands of serious riders and professionals alike.
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Upgrade your engine's performance with Hot Cams' 7.48mm valve shim refill pack. These precision-engineered shims deliver accurate valve clearance adjustments, enhancing power output and engine efficiency for riders demanding top-tier performance.
Key Features
- 7.48mm Diameter Precision: Perfectly sized for Hot Cams 7.48mm shim kits and bucket-style valve systems.
- Thickness Range 1.20–2.50mm: 0.05mm increments ensure precise clearance adjustments for optimal engine operation.
- Universal Compatibility: Works with any engine using 7.48mm bucket/shim-under-bucket valve shims.
- Refill Assortment: Includes multiple shims per pack (exact counts vary by package).
- Durable Reusability: Reusable as long as undamaged and surfaces remain smooth.
- Easy Installation: Simplify valve clearance adjustments with pre-measured, high-quality shims.
Why Choose This Product
Hot Cams' shim refills deliver unmatched reliability for valve adjustment, ensuring peak engine performance and longevity. The precise 0.05mm thickness increments allow for fine-tuning, while the durable stainless steel construction resists wear and corrosion. Whether you're maintaining a high-performance motorcycle or modifying a racing engine, these shims provide the accuracy needed to maximize power and efficiency. Their universal compatibility makes them a versatile addition to any mechanic's toolkit, saving time and ensuring consistent results. Trust Hot Cams for precision-engineered solutions that meet the demands of serious riders and professionals alike.
| SKU | GMD3471B28 |
|---|---|
| MPN | 5PK748125 |
| Brand | Hot Cams |
| Category | Engine |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Honda | CRF450R | 2009-2015 |
| Kawasaki | KX450F | 2010-2013 |
| Yamaha | YZ450F | 2008-2018 |
| KTM | 450 SX-F | 2009-2014 |
| Suzuki | RMZ450 | 2010-2016 |
Frequently Asked Questions
This refill pack is for 7.48 mm diameter valve shims, commonly used on many 250–600 cc Japanese sport and off-road bikes. It is intended to replenish a Hot Cams 7.48 mm shim kit.
Fitment depends on whether your engine uses 7.48 mm diameter valve shims. Check your service manual or existing shims; if they are 7.48 mm, this pack can be used to adjust clearances.
Beyond standard hand tools you will need feeler gauges, a torque wrench, and access to the factory service manual. A micrometer or caliper is recommended to verify shim thickness.
Yes. Valve shims are solid pieces of hardened steel and can be reused as long as their surfaces are smooth, not cupped or damaged, and thickness is within specification.
No. 5PK748125 is a refill assortment meant to restock a 7.48 mm Hot Cams shim kit. It is not packaged as a full, organized master kit with labeled compartments.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- service manual for your specific vehicle
- metric socket set
- torque wrench (inch‑lb and/or ft‑lb as required)
- feeler gauge set (metric)
- magnet pick-up tool or shim tool
- small pick or needle-nose pliers
- clean shop rags
- permanent marker and notepad (to record shim sizes and locations)
- caliper or micrometer (optional but recommended to verify shim thickness)
Pro Tips
- Work on a completely cold engine and follow the factory service manual procedure step-by-step.
- Create a simple chart for each valve (IN/EX, cylinder number) and record both current clearance and shim size before changes.
- Use a dab of clean assembly lube or engine oil on shims to help them stay in place during reassembly.
- Always rotate the engine by hand (using the crank bolt) and verify smooth rotation before starting the engine.
- Lay cam caps, bolts, and cams out on a clean bench in the exact orientation/order they came out.
Common Mistakes to Avoid
- Mixing up shim locations and not recording original sizes and positions
- Not rotating engine to correct TDC position for each cylinder before measuring
- Measuring valve clearances on a hot engine instead of cold, leading to incorrect shim selection
- Dropping a shim into the engine (through timing chain area or oil return passages)
- Not torquing cam caps to spec or in correct sequence
- Failing to recheck clearances after rotating engine two full revolutions
Comparison vs Stock/OEM
Functionally equivalent to OEM valve shims as both are hardened steel discs used to set valve lash. Aftermarket Hot Cams shims are typically sold in kits and refill packs to provide more size options and better convenience compared with ordering individual OEM shims.
Improvements
- Broader selection of shim sizes on hand, reducing downtime.
- Cost-effective compared to buying individual OEM shims per size.
- Convenient for shops or riders who perform repeated valve adjustments.
Considerations
- Always verify shim diameter (7.48 mm) matches your OEM specification.
- Mixing OEM and aftermarket shims is generally acceptable as long as quality and size are correct.
Durability & Warranty
Expected Lifespan
Typically lasts the service life of the engine when installed correctly, unless damaged during handling or by abnormal valvetrain wear.
Warranty
Standard aftermarket parts warranty from the retailer or Hot Cams (exact terms vary by seller; usually limited against manufacturing defects only).
Maintenance
No direct maintenance; simply inspect surfaces for pitting, cupping, or unusual wear whenever the valve cover is removed. Monitor valve clearances per your service schedule and change shims only when clearances drift out of spec.
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