
Spool B58 Gen 1 Exhaust Cam Fuel Lobe Mod | +40%
Ships free in the US
Make sure this fits your car
Fits: M340i G20/G21, M440i G22/G23/G26, M240i G42 & 6 more
- Shop tested in Dallas
- Free pickup in Dallas
- Installs at our shop
Spool Performance is proud to offer our in-house B58 Gen1 Exhaust Cam Fuel Lobe Mod service to take full advantage of our high pressure pump and injector lineup for B58 Direct Injected fuel system. Customers would need to ship their exhaust camshaft to our facility where it would be thoroughly cleaned, cam profile modified in our CNC live tooling lathes, polished and re-hardened before getting shipped back out. The updated cam profile provides more lift and results in a 40% increase in HPFP output. The process usually takes 2 business days.
Combined with our FX-200 pumps and IFX injectors, the updated cam profile can flow north of 900whp on full E85 and north of 1000whp on E50 or less. DI-only capabilities has never been this exciting!
Note: Only compatible with Spool Performance FX pumps.
If you are an existing customer with both our FX-200 and IFX injectors, please email us @ customer_service@spoolperformance.us for a 30% discount code on the CAM mod.
Listed for these cars. Check the title and description for exact years, body styles and drivetrain.
| Make | Model | Chassis | Years | Fits |
|---|---|---|---|---|
| BMW | M340i | G20/G21 | 2019+ | |
| BMW | M440i | G22/G23/G26 | 2021+ | |
| BMW | M240i | G42 | 2022+ | |
| BMW | M240i / M235i | F22/F23 | 2014–2021 | |
| BMW | 340i / 335i / 330i | F30/F31 | 2012–2019 | |
| BMW | 440i / 435i | F32/F33/F36 | 2014–2020 | |
| BMW | 540i / M550i | G30/G31 | 2017–2023 | |
| BMW | Z4 M40i | G29 | 2019+ | |
| Toyota | GR Supra 3.0 | A90/A91 | 2020+ |
Not sure? Call or text 945-954-1142 with your car or VIN.
- Free US shipping on orders over $250.
- Free pickup at our Dallas shop, usually ready within 24 hours.
- Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
- Want it installed? Book the install at thegbmotors.com.
Full details are on our shipping and returns page.
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