ARC GX390 Rod Insert for Big Block Clone Engine Durability

Big blocks demand big protection— enter the ARC GX390 rod insert, tailored for the punishing loads of larger displacement clones. It separates rod and bearing surfaces, ensuring optimal oil flow in high-stress scenarios.

This insert's material withstands the heat from extended strokes, keeping clearances tight for efficient power. In kart classes with GX390s, it means fewer seizures and more reliable pulls from the line.

• Direct fit for ARC big block rods.
• Resists deformation under pressure.
• Supports high-horsepower builds.

By curbing wear, it indirectly boosts speed through consistent tuning. Racers note smoother idles and revs, translating to predictable handling on the track.

SKU: ARC6391