Max Effort HP90 and Torque Converter Combo (Hellcat & Redeye) Input Shaft:Stock Input Shaft Upgrade tolerances and specs to

Upgrade tolerances and specs to MAX EFFORT standards

Keep your “Max Effort” Transmission ready for the track with SSP's “Max Effort” Transmission Refresh

Fill the unit with approved ZF fluid

Replace seals & bearings

Max Effort HP90 and Torque Converter Combo (Hellcat & Redeye) Input Shaft:Stock Input Shaft Upgrade tolerances and specs toSave with Sipple Speed and Performance Max Effort HP90 Transmission and Torque Converter Combos for Hellcats & Redeyes. We only offer one level of transmission the "Max Effort". These are the race proven, fully built transmissions. Billet E Drums, performance steels and frictions all assembled to SSP's precise specifications. We don't just throw a bunch of clutches in and hope for the best. There is a reason Sipple's Max Effort Transmissions lead the