Spool ZF 8HP45/50/51 Billet 7075-T6 D Clutch Drum
Ships from the brand or distributor, usually in 3–7 business days
Make sure this fits your car
Fits: BMW B58 and Toyota GR Supra 3.0 with the ZF 8HP45, 8HP50 or 8HP51 automatic
- Free US shipping over $250
- 30-day returns on unused parts
- Fitment help before you buy
Spool Performance 8HP45 / 8HP50 / 8HP51 upgraded billet 7075-T6 D Clutch Drum The factory A380 cast-aluminum D-drum in the ZF 8HP45/50/51 is one of the weak links once power levels rise—prone to cracking, distortion, and oil starvation under high load and high RPM clutch events. Spool Performance eliminates that limitation with a fully CNC-machined billet 7075-T6 D Clutch Drum , engineered for extreme durability and precise hydraulic control in high-horsepower builds. Why 7075-T6? Superior Strength Where It Matters Most OEM drums use A380 cast aluminum , chosen for cost—not strength. By contrast, 7075-T6 aerospace-grade billet aluminum delivers: Massive Strength Increase Over A380 7075-T6 tensile strength: ~74–78 ksi A380 cast aluminum: ~46 ksi Result: Significantly higher resistance to cracking, deformation, and fatigue under aggressive clutch pressure spikes.
Fits: BMW B58 and Toyota GR Supra 3.0 with the ZF 8HP45, 8HP50 or 8HP51 automatic
Brand: Spool Performance
BMW B58 and Toyota GR Supra 3.0 with the ZF 8HP45, 8HP50 or 8HP51 automatic
| Model | Chassis | Years | Engine | Fits |
|---|---|---|---|---|
| M140i | F20/F21 | 2016–2019 | Gen 1 B58 | |
| M240i | F22/F23 | 2016–2021 | Gen 1 B58 | |
| 340i | F30/F31/F34 | 2016–2019 | Gen 1 B58 | |
| 440i | F32/F33/F36 | 2017–2020 | Gen 1 B58 | |
| 540i | G30/G31 | 2017–2019 | Gen 1 B58 | |
| 740i | G11/G12 | 2016–2019 | Gen 1 B58 | |
| X3 M40i | G01 | 2018–2019 | Gen 1 B58 | |
| M340i | G20/G21 | 2019+ | Gen 2 B58 (TU) | |
| M440i | G22/G23/G26 | 2021+ | Gen 2 B58 (TU) | |
| M240i | G42 | 2022+ | Gen 2 B58 (TU) | |
| Z4 M40i | G29 | 2019+ | Gen 2 B58 (TU) | |
| GR Supra 3.0 | A90/A91 | 2020+ | Gen 2 B58 (TU) | |
| 540i | G30/G31 | 2020–2023 | Gen 2 B58 (TU) | |
| 740i | G11/G12 | 2020–2022 | Gen 2 B58 (TU) | |
| X3 M40i | G01 | 2020+ | Gen 2 B58 (TU) |
Not sure? Email sales@b58racing.com with your VIN.
- Ships from the brand or distributor, usually in 3–7 business days.
- Free US shipping on orders over $250.
- Unused parts can be returned within 30 days. Some items are marked no-refund in their description.
Full details are on our shipping and returns page.
Pairs well with
Spool ZF 8HP45/50/51 Billet 300M C-Hub Cog Drive
Spool 8HP45/50/51 Billet Oil Pan Service Kit
Spool ZF 8HP Billet Main Shaft (8HP45/50/51 or 8HP70/75/76)
