Description
Spool Performance Stage 2 Transmission Kit – Dodge 8HP70 & 8HP75
Engineered at Spool Performance HQ, the Stage 2 Transmission Kit transforms the Dodge 8HP70 and 8HP75 into a high-torque, high-RPM powerhouse, capable of handling over 1200 ft-lbs of torque while maintaining smooth, daily-drivable shifts. Perfect for HEMI builds, drag launches, or extreme high-boost applications, this kit eliminates the weaknesses of stock cast-aluminum hubs and OEM clutch packs.
Why Upgrade to Stage 2
OEM Weak Points:
- Cast A380 C & E hubs prone to cracking, spline shearing, and burnout
- Clutch packs limited in torque capacity and thermal stability
- Steel plates damaging soft aluminum hubs under high-load
Spool Stage 2 Solutions:
- Billet 7075-T6 C & E Hubs: Heat-treated, hard-anodized aerospace-grade aluminum for near-steel strength with reduced weight
- FX-RT High-Coefficient Friction Packs: Optimized for repeated high-load shifts with superior thermal resistance
- Increased Clutch Counts: Additional frictions and steels across all packs (A–E) for extreme torque capacity
- Custom Pressure & Apply Plates: Enhanced clamping force and shift consistency
- Pre-Clearanced Clutch Packs: Ready to install, saving setup time
- Extra Steel Plates: Included for optional custom clearance
Features & Benefits
- Supports 1200+ WHP / 1200+ ft-lbs torque
- Durable billet hubs prevent cracking, binding, and spline failure
- Stable, consistent engagement under high boost, nitrous, and drag conditions
- Optimized oil flow for faster cooling and improved shift response
- Complete kit with all friction packs, steels, apply plates, and seal kit
What’s Included
- Billet 7075-T6 C Hub + E Hub + E Hub Center Bushing
- Clutch Packs: A, B, C, D, E with frictions, steels, pressure plates, and apply plates
- Complete seal kit (gaskets + O-rings)
- Extra steel plates for clearance adjustments
Compatible Vehicles
Dodge / RAM / Jeep / Chrysler 8HP70 & 8HP75 Platforms:
Dodge:
- Charger R/T 5.7
- Charger Scat Pack / SRT 392 6.4
- Challenger R/T 5.7
- Challenger Scat Pack / SRT 392 6.4
- Durango R/T 5.7
- Durango SRT / 6.4L
RAM:
- Ram 1500 5.7 (DT, 8HP75)
- Ram 1500 3.0 EcoDiesel
- Ram 2500 / 3500 6.4 (8HP75-LCV)
Jeep:
- Grand Cherokee 5.7
- Grand Cherokee SRT 6.4
- Grand Cherokee 3.0 EcoDiesel
- Wrangler 392 6.4
- Wagoneer / Grand Wagoneer (8HP75 variants)
Chrysler:
- 300C 5.7
- 300 SRT 6.4
Summary
The Spool Stage 2 8HP70 / 8HP75 Transmission Kit is the ultimate solution for high-power Dodge, RAM, Jeep, and Chrysler builds. With billet hubs, FX-RT clutches, and pre-cleared packs, it delivers unmatched torque capacity, shift stability, and long-term reliability—far beyond the limits of the factory transmission.
Note: 'New' merchandise may be returned for exchange or refund within 15 days from the date of shipment. 'New' merchandise must be unused and free from installation or mounting damage. Installation or modification of parts waives your right to returns, refunds, or exchanges.
