J
jim
Well-known member
Running the blue/red in the M1000 right now. Have stock weights in the primary and running RKT head, RKT clutch kit, y pipe, slp intake and jaws can...TFI box to add some fuel. Holds 7450 all day and backshifts much better than any other primary spring I tried. It's a Polaris spring, not officially for the cat, but it fits just fine. Might try it if you were doing what I was...over and under shifting.
