ARC 0.002 Inch Flathead Rod Insert for Precise Kart Engine Tolerances

Fine-tuning clearances is the art of unlocking hidden performance— the ARC Flathead Rod Insert (.002) masters it for Raptor engines. This undersized insert allows for exact rod journal fits, minimizing slop that robs power and causes uneven wear.

• 0.002-inch undersize for engines needing tighter specs post-honing.
• Bronze construction for excellent embeddability and oil retention.
• Direct replacement in ARC billet rods, ensuring concentric alignment.

In kart racing, where engines scream at 8000+ RPM, precise inserts like this one prevent metal-on-metal contact, extending life and allowing bolder tuning. It promotes even oil distribution, cooling bearings during intense runs for consistent power delivery. The result? Smoother revs, less vibration, and the ability to hold gears longer for faster sector times.

Mechanics use SKU: ARC6392-2 in high-precision rebuilds, pairing it with micrometers for spot-on clearances. It's especially valuable in stroked setups where tolerances tighten. No more guessing—get the fit that turns potential DNFs into reliable finishes.

Simple to install with basic tools, this insert elevates your bottom end to pro levels, making your kart feel alive and responsive.