ARP 260-5001 Subaru 2.0L FA20 4cyl main bolt kit ymm_34 and it gives the rear

and it gives the rear of the car a more aggressive and sporty feel

Power and torque are increased by 5

Torque +19

Weld-On Bung

ARP 260-5001 Subaru 2.0L FA20 4cyl main bolt kit ymm_34 and it gives the rearFar superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under head radius and rolled threads for the utmost reliability. The threads are rolled after heat treating, which makes them about 1000% longer fatigue life than most main bolts, which are threaded prior to heat