300 hp or Lower - Choice of spring depending on engagement preference & 2mm Rollers, 1335 or 1338 ramps
300 hp or Higher - Choice of spring depending on engagement preference &, 3mm Rollers, 1335 or 1338 & 8g Race Weights
*By flipping 2 Ramps from A side to B side you will increase your Engagement by about 600-800 RPM
*By flipping all 4 Ramps to B side you can increase your Engagement RPM even higher