Kiggly Racing Main Girdle - 6-Bolt 4g63

- 6-Bolt Main Girdle Fits 4G63 and G4CS blocks

- Recommended in all builds above 350hp

- Requires minor engine block grinding at the lower two rear main cover bolts

- Requires using main studs (ARP is one popular brand)

- Stiffens the main caps and eliminates or greatly reduces main cap to block flex and fretting •Recommended to line hone the engine with the girdle installed