996 TWIN TURBO TECH TIP

The 3rd gear bearing on the 996TT mainshaft is prone to failure. The 997TT mainshaft has a larger bearing and can be used in place of the 996 shaft. 3rd gear is wider and is stronger.

This will require the 997TT mainshaft,1st,2nd,3rd gears and the 3rd gear bearing. This change will improve the 1st through 3rd gear ratios.

996TT gearchart

997TT Gearchart