0.040" Oversize Top Ring for High-Performance Raptor Engines

Accelerate your rebuild with the 0.040" top ring that redefines reliability for Raptor powerplants in demanding kart environments.

Built to handle extreme bores, this ring maintains contact under all conditions, optimizing fuel burn for better horsepower across the RPM range.

• Precision Tolerance: Ensures minimal clearance for superior pressure retention.
• Versatile Use: Suited for both stock refreshes and high-performance mods.

With SKU BTR040R3, keep your pit area organized and your engine primed for victory laps, delivering the thrust needed to outpace rivals.

Frequently Asked Questions

Q: How do I know if I need a 0.040" oversize ring?

A: You should use a 0.040" oversize ring only after your cylinder has been bored and honed to 0.040" over the standard factory specification. Always measure your cylinder bore with a precision bore gauge before purchasing to ensure the correct fit.

Q: Is this ring compatible with standard-bore Raptor engines?

A: No. This ring is specifically designed for engines that have been machined to a 0.040" oversize. Installing this on a standard-bore piston will result in improper ring end gap and potential engine failure.

Q: Do I need to gap these rings before installation?

A: Yes. Even with precision-manufactured rings, you must check the ring end gap inside your specific cylinder bore to ensure it meets the manufacturer's clearance specifications for your racing application.

Q: Can I use this ring for both stock and modified Raptor builds?

A: Yes, this ring is engineered for versatility. Its design provides the necessary pressure retention for stock refreshes while maintaining the durability required for high-performance modified Raptor powerplants.

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