Hot Cams 9.48mm Valve Shim Refill Pack - 25-Piece Hardened Steel Kit for Engine Adjustments

Name: Hot Cams 9.48mm Valve Shim Refill Pack - 25-Piece Hardened Steel Kit for Engine Adjustments
Brand: Hot Cams
SKU: GM037B9739
Price: 9.99 USD
Availability: InStock

Description

Upgrade your engine performance with Hot Cams' premium valve shim refills designed for precise valvetrain adjustments. This 25-piece refill pack provides essential shims for maintaining optimal valve clearance in high-performance engines.

Key Features

9.48mm Diameter Precision: Perfectly sized for Hot Cams master shim kits to ensure accurate valve clearance adjustments.
5-Size Range (2.40-2.48mm): 0.02mm increments offer precise customization for various engine applications.
Hardened Steel Construction: Durable, wear-resistant material ensures long-lasting performance under high-stress conditions.
25-Piece Refill Pack: Economical bulk option for frequent adjustments or maintenance needs.
Compact Refill Card: Easy-to-store blister pack integrates seamlessly with Hot Cams shim kit boxes.

Why Choose This Product

Engineers and riders rely on Hot Cams shims for their unmatched precision and reliability. This refill pack delivers consistent performance for valve adjustment tasks, reducing downtime and ensuring peak engine efficiency. The hardened steel shims resist deformation, while the 0.02mm increments provide fine-tuning capabilities for both stock and modified engines. Ideal for bucket-style valvetrains, these shims maintain proper valve clearance without compromising performance. With 25 pieces per pack, this refill solution offers cost-effective, long-term value for professionals and enthusiasts alike.

SKU: GM037B9739

MPN: 5PK890244

Category: Engine

Brand: Hot Cams

Stock: In Stock

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Key Features

9.48mm Diameter Precision: Perfectly sized for Hot Cams master shim kits to ensure accurate valve clearance adjustments.
5-Size Range (2.40-2.48mm): 0.02mm increments offer precise customization for various engine applications.
Hardened Steel Construction: Durable, wear-resistant material ensures long-lasting performance under high-stress conditions.
25-Piece Refill Pack: Economical bulk option for frequent adjustments or maintenance needs.
Compact Refill Card: Easy-to-store blister pack integrates seamlessly with Hot Cams shim kit boxes.

Why Choose This Product

SKU	GM037B9739
MPN	5PK890244
Brand	Hot Cams
Category	Engine

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Frequently Asked Questions

Hot Cams 5PK890244 is a refill pack for 9.48 mm diameter valve shims. It is intended to restock a Hot Cams 9.48 mm master shim kit, not to be used as a stand‑alone universal kit.

If your engine uses 9.48 mm bucket/shim‑under‑bucket style valve shims (common on many modern Japanese 250–1000 cc four‑strokes), they are generally compatible. Always verify your OEM shim diameter in the service manual before ordering.

No. It is a 25-piece refill card with 5 pieces of each thickness from 2.40 mm to 2.48 mm. A full master kit contains a much wider thickness range and more pieces.

Yes. These shims only provide thickness options. You must measure each valve clearance with feeler gauges and calculate the required shim size using your service manual.

Yes, as long as the diameter matches (9.48 mm here) and you carefully record thicknesses. Many technicians mix OEM and Hot Cams shims in the same engine.

Installation Guide

Difficulty Medium

Est. Time 1 hr 0 min

Tools Required

Metric socket set
Torque wrench (in-lb/ft-lb)
Feeler gauge set (metric)
Micrometer or digital caliper (to verify shim thickness)
Magnet pick-up tool or small pick for shim removal
Service manual for specific valve clearance specs
Clean shop towels and parts tray

Pro Tips

Measure every shim with a micrometer even though it is marked; markings can wear or be hard to read.
Work on one cylinder at a time and record everything in a notebook or spreadsheet.
Lightly oil shims before installation to help them sit flat in the bucket.
Always rotate the engine by hand at least two full revolutions and re-check clearances before final assembly.
Have new cam cap bolts or thread repair options available for older/high-mileage heads where threads may be weak.

Common Mistakes to Avoid

Installing a shim of the wrong diameter (must be 9.48 mm for this pack).
Mixing up shim locations and not recording original thicknesses and positions.
Not re-checking valve clearances after rotating the engine through several revolutions.
Dropping shims into the engine and not retrieving them before reassembly.
Over- or under-torquing cam cap bolts, which can strip threads or cause cam bind.

Comparison vs Stock/OEM

Functionally equivalent to OEM 9.48 mm valve shims but sold in a convenient kit/refill format for repeat service.

Improvements

Economical bulk refill option compared to buying individual OEM shims.
Consistent sizing increments across the card (0.02 mm steps).
Designed to integrate with Hot Cams master shim kits for organized storage.

Considerations

Does not include the full range of thicknesses that may be available from OEM catalogs.
Technicians should still verify thickness with precision measuring tools for critical race applications.

Durability & Warranty

Expected Lifespan Typically lasts the service life of the valve train when installed correctly; shims are not normal wear items if clearances are maintained and no abnormal valvetrain damage occurs.

Warranty Standard Hot Cams limited warranty against manufacturing defects (length and terms vary by region/retailer).

Maintenance No direct maintenance required on the shims themselves. Periodically re-check valve clearances per the vehicle service schedule; shims are only replaced when adjustment is needed.