ARP 203-5001 Main Bolt Kit for TOYOTA 1600cc ymm_1 the Sound Kit is not

the Sound Kit is not required

Akrapovič Sound Kit is also compatible with cars equipped with Alfa Romeo first fit or accessory Akrapovič exhaust

1 Nm at 2300 rpm (+8

Torque +38

With a handmade carbon-fibre diffuser

ARP 203-5001 Main Bolt Kit for TOYOTA 1600cc ymm_1 the Sound Kit is notFar 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