Kart teams rely on the BSR040R3 to maintain velocity without the drag of excess fluids, streamlining high-stakes performance.

• Robust Edge Design: Scrapes effectively even at elevated temperatures.
• Build Versatility: Ideal for tuned engines demanding tight tolerances.

Organize your ring stack around this SKU for a cleaner, faster-running motor that dominates corners and straights alike.

Frequently Asked Questions

Q: Is this 0.040" scraper ring compatible with standard bore Raptor engines?

A: No, this ring is specifically designed for engines that have been bored 0.040" over. Attempting to use this on a standard bore will result in improper ring end gap and engine failure.

Q: How do I ensure the correct ring end gap during installation?

A: Always file-fit your rings to your specific cylinder bore. Place the ring squarely in the cylinder and use a feeler gauge to measure the gap, ensuring it meets the clearance specifications outlined in your engine build manual.

Q: Why is a scraper ring important for high-performance kart builds?

A: A high-quality scraper ring effectively removes excess oil from the cylinder wall, preventing oil blow-by. This keeps the combustion chamber clean, maintains proper compression, and reduces fluid drag for maximum RPM efficiency.

Q: Should I replace all rings when installing this 0.040" scraper?

A: Yes, it is best practice to replace the entire ring set whenever you are performing a top-end rebuild or installing an oversized piston to ensure even wear and optimal seal across the entire piston stack.

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