• Larger .035" sizing (SKU 555506) fits honed cylinders in worn Raptor flathead engines.
• Critical for maintaining seal integrity under extreme combustion forces.
• Promotes efficient heat dissipation to avoid hot spots that rob velocity.

Rebuilding after a tough season? This top ring steps up, bridging the gap left by expansion in bores. It controls side clearance meticulously, ensuring every cylinder charge ignites fully for that adrenaline-pumping acceleration.

Track veterans know: a well-sealed top ring translates to fewer adjustments and more wins. It scrapes excess oil cleanly, keeping chambers pristine for optimal burn. Imagine your kart holding gears longer, slicing through straights with unyielding momentum. This component empowers bolder lines in corners, as consistent power builds trust in your machine.

Beyond raw speed, it aids in fuel economy during practice runs, stretching your budget for race fuel. Easy to source and install, it's a staple in pro shops for turning reliable engines into track weapons.

Frequently Asked Questions

Q: Why do I need a .035" oversize ring for my Raptor engine?

A: As Raptor flathead engines age, cylinder bores can wear or require honing to remove imperfections. A .035" oversize ring is designed to compensate for this material removal, ensuring a tight seal against the cylinder wall to maintain proper compression and combustion pressure.

Q: How do I know if my engine requires this specific size?

A: You should measure your cylinder bore diameter using a precision bore gauge. If your cylinder has been bored or honed to .035" over the standard factory specification, this ring is the correct size to restore your engine's performance.

Q: Does this ring require a break-in period?

A: Yes. After installing new piston rings, it is recommended to follow a proper break-in procedure. This allows the ring to "seat" against the cylinder wall, which is critical for achieving a perfect seal and preventing oil blow-by during high-RPM racing.

Q: Can I use this ring with a standard-sized piston?

A: No. This ring is specifically engineered for a .035" oversize piston application. Using it with a standard piston will result in improper end-gap clearance, which can lead to engine failure or severe loss of power.

Q: What is the best way to ensure a clean seal during installation?

A: Always ensure your cylinder walls are clean and properly cross-hatched before installation. Use a high-quality ring compressor to avoid damaging or snapping the ring during insertion, and ensure the ring end-gap is oriented correctly according to your engine manual.

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