Description
Spool Performance Stage 2 Transmission Kit – 8HP70 / 8HP75 / 8HP76
Engineered for high-torque BMW applications, the Spool Stage 2 Transmission Kit transforms your 8HP70, 8HP75, or 8HP76 series transmission into a track-ready, high-power drivetrain capable of over 1200 ft-lbs torque. Developed after over a year of rigorous testing, this DIY parts kit is designed to exceed the limitations of stock components while maintaining smooth engagement and OEM-like drivability.
Key Upgrades & Features
- Billet 7075 Hubs (C & E): Heat-treated and hard-anodized for maximum strength and wear resistance; eliminates OEM A380 hub failures.
- FX-RT Friction Discs: Proprietary in-house developed friction materials for higher torque handling and durability.
- Custom Pressure & Apply Plates: Simplifies installation and ensures optimal clutch engagement.
- Increased Clutch Counts: Each clutch pack is upgraded to enhance torque capacity.
- Pre-Clearanced Clutch Packs: Drop-in ready with no additional adjustments required.
- Extra Steel Plates: Provided for builders preferring custom clearance settings.
- Improved Oil & Cooling Flow: Optimized hub design enhances clutch longevity and cooling efficiency.
Package Includes
- 7075 Custom Billet E Hub & Center Bushing
- 7075 Custom Billet C Hub
- Clutch Packs A–E: Friction & Steel Plates, Pressure Plates, Apply Plates
- Complete Seal Kit: Gaskets & O-rings
Recommended Transmission Fluid: AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid (Blue Cap)
Performance Benefits
- Handle extreme torque and track conditions with confidence
- Minimized risk of hub shearing, spline failure, or clutch burnout
- Maintains smooth, factory-like engagement and drivability
- Pre-clearanced design reduces installation errors and setup time
Compatibility / Fitment
- BMW M5 F90 – 2017–Present
- BMW M8 F92/F91/F93 – 2019–Present
- BMW X3 M F97 – 2019–Present
- BMW X4 M F98 – 2019–Present
- BMW X5 M F95 – 2020–Present
- BMW X6 M F96 – 2020–Present
- BMW M3 G80 – 2021–Present
- BMW M4 G82/G83 – 2021–Present
- BMW ALPINA B7 G12 – 2020–Present
- BMW ALPINA B8 Gran Coupé G16 – 2021–Present
Note: 8HP70 compatibility limited to newer 48-spline versions.
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.
