Tomei Main Stud & Ladder Set - 4AG 12030-PR7-000 By installing the HARDRACE Roll-Center

By installing the HARDRACE Roll-Center Adjusting spacer

Essentially a re-worked factory shifter

CNC machined components

Mitsubishi 4G63

corrosion resistant coating

Tomei Main Stud & Ladder Set - 4AG 12030-PR7-000 By installing the HARDRACE Roll-CenterA common weak point found when tuning the 4AG engine is from the crank cab bolts being insufficient to cope with the high stress loads from extreme engine speeds. The weak crank cab bolts can result in the stock crank cab bolts breaking or excessive loads on the bearings causing rapid irregular wearing. In the worse case scenario this can lead to engine failure. The TOMEI ladders also aid further in increased block rigidness to help support the crank