Sipple Speed and Performance Max Effort HP90 Transmission 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 lists online, and the winner's circle at the track. 

Description

MAX EFFORT HP90 Build Service
All tolerances and specs set to MAX EFFORT standards.

• Set clutch & hard part clearances to MAX EFFORT specs
• Install billet E Drum
• Bench test unit
• Recalibrate Valve Body To MAX EFFORT Specs
• Trans filled with fluid for plug and play

Specs

• Billet E-drum
• Extra capacity performance frictions/steels
  • (A,C,E,D)
• Upgraded stator bushing
• Upgraded rear bearing
• New seals & gaskets
• New pan filter
• New pump & chain
• Valve body recalibration
• Build new separator plate & valve body
• New pump bolts
• Proprietary modifications to input/output shafts
• New output shaft nut
• Optional Billet Input Shaft

Vehicles

• 2015-2023 Hellcat Challenger
• 2015-2023 Hellcat Charger
• 2018 Demon

Variations/Options

• 2015-17
• 2018-23
• TCMS different 1st gen/2nd gen

Billet Input Shaft

• HP70/75 over 1000 wheel horsepower
• HP90/95 over 1200 wheel horsepower

The billet input shaft is made with improvements over the OE shaft for oiling and fit. This input shaft is made of billet steel vs OE standard material.

The billet shaft has been tested to 2100 HP so far with zero stress wear.