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Start ShoppingHot Cams 5PK948220 Shim Package Refills - Engine Performance Enhancer for Riders
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Description
Upgrade your engine's performance with Hot Cams' premium shim package refills. These high-quality shims ensure precise clearance adjustments, delivering enhanced power, efficiency, and longevity for your powersports vehicle.
Key Features
- High-Precision Engineering: Manufactured to exact tolerances for seamless integration with OEM components.
- Durable Material Construction: Made from heat-resistant alloys to withstand extreme engine conditions.
- Easy Installation: Pre-gauged shims simplify maintenance tasks and reduce downtime.
- Compatibility Guaranteed: Designed for Hot Cams 5PK948220 systems to ensure perfect fit and function.
Why Choose This Product
Hot Cams shims deliver unmatched reliability for riders who demand peak engine performance. By maintaining optimal valve clearance, these refills prevent overheating, reduce wear, and improve fuel efficiency. Whether you're tuning for power or reliability, these shims offer a cost-effective solution for professional mechanics and serious riders alike. Trust the expertise behind Hot Cams to keep your engine running smoothly under any conditions.
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Upgrade your engine's performance with Hot Cams' premium shim package refills. These high-quality shims ensure precise clearance adjustments, delivering enhanced power, efficiency, and longevity for your powersports vehicle.
Key Features
- High-Precision Engineering: Manufactured to exact tolerances for seamless integration with OEM components.
- Durable Material Construction: Made from heat-resistant alloys to withstand extreme engine conditions.
- Easy Installation: Pre-gauged shims simplify maintenance tasks and reduce downtime.
- Compatibility Guaranteed: Designed for Hot Cams 5PK948220 systems to ensure perfect fit and function.
Why Choose This Product
Hot Cams shims deliver unmatched reliability for riders who demand peak engine performance. By maintaining optimal valve clearance, these refills prevent overheating, reduce wear, and improve fuel efficiency. Whether you're tuning for power or reliability, these shims offer a cost-effective solution for professional mechanics and serious riders alike. Trust the expertise behind Hot Cams to keep your engine running smoothly under any conditions.
| SKU | GMB35B39E0 |
|---|---|
| MPN | 5PK948220 |
| Brand | Hot Cams |
| Category | Engine |
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Frequently Asked Questions
It is a Hot Cams valve shim refill pack containing 5 shims of a specific size used to adjust valve clearance in shim‑under‑bucket style engines. It is intended to restock specific sizes from a larger Hot Cams shim kit.
You must match two things: the shim diameter (e.g., 7.48 mm, 9.48 mm, 10.00 mm) your engine uses, and the thickness you need based on your valve clearance measurements. Check your owner’s/service manual or an existing shim with a micrometer, then verify the 5PK948220 size specs on the retailer or manufacturer listing.
Yes. At minimum you need a feeler gauge set to measure valve clearance, and a micrometer or digital caliper to confirm shim thickness. You will also need normal metric hand tools and a torque wrench to remove cams or use a shim‑tool, depending on your engine design.
In general, yes, as long as the diameter and thickness match your OEM specifications and they are within tolerance. Many riders mix OEM and quality aftermarket shims. Always verify dimensions and maintain accurate records of what thickness is installed at each valve.
Shims are usually flat and can be installed either side up, but many technicians install them with the size marking facing down to protect it from wear. What matters most is that the shim sits flat in the bucket and matches the required diameter and thickness.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- service manual for your specific model
- feeler gauge set (metric)
- micrometer or digital caliper (to verify shim thickness)
- basic metric hand tools (sockets, ratchets, extensions, wrenches, screwdrivers)
- torque wrench (for cam caps and valve cover)
- magnetic pickup tool or small pick (to remove shims)
- clean shop rags
- engine assembly lube or clean engine oil (for cam lobes/journals on reassembly)
Pro Tips
- Measure every old shim with a micrometer, even if size markings are present, and record them in a chart (location vs. thickness).
- Work on one cylinder at a time and keep shims organized in a labeled tray or container.
- Before disassembly, mark cam sprockets and chain relative positions with paint in addition to factory timing marks for easier alignment.
- Lightly oil new shims and cam lobes before reassembly to avoid dry starts.
- After reassembly, rotate the engine by hand two full revolutions and re‑check timing marks and valve clearances before starting the motor.
Common Mistakes to Avoid
- Not consulting the factory service manual for torque specs and cam timing marks
- Mixing up cam caps or camshaft positions during reassembly
- Failing to note original shim thicknesses and locations before swapping
- Rotating the engine with incorrect cam timing or loose cam caps
- Not re‑checking valve clearances after replacing shims
- Dropping shims into the engine (through oil drainback holes) due to lack of rags or care
Comparison vs Stock/OEM
Functionally equivalent to OEM valve shims when the correct diameter and thickness are chosen. Hot Cams shims are designed to meet or exceed OEM tolerances for hardness and thickness accuracy.
Improvements
- Lower cost per shim compared to many OEM dealers
- Convenient multi‑pack to restock commonly used sizes
- Typically offered in fine thickness increments for precise valve clearance setting
Considerations
- You must verify that the shim diameter and thickness match your OEM specifications.
- Mixing shim brands is acceptable if dimensions and quality are equivalent, but always measure and record values.
- Tolerances can vary slightly between manufacturers; use a micrometer rather than relying solely on markings.
Durability & Warranty
Expected Lifespan
Under normal operating conditions and with proper lubrication, valve shims generally last the life of the valve train and are only changed to correct clearance, not due to shim wear.
Warranty
Typical aftermarket hard‑part warranty (exact terms must be confirmed with Hot Cams or the retailer; often limited against defects in materials and workmanship).
Maintenance
Follow the valve‑clearance inspection interval specified in your owner’s or service manual (often every 6,000–16,000 miles / 10–30 hours for off‑road use). Record shim sizes and locations at each adjustment to simplify future maintenance.
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