Kelford Cams BMW B58 Gen1 Performance Cams (#257-A)
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Ships from the brand or distributor, usually in 3–7 business days
Make sure this fits your car
Fits: Gen 1 B58 (2016-2019 F-series: M140i, M240i, 340i, 440i, 540i, 740i, X3/X4 M40i)
- Free US shipping over $250
- 30-day returns on unused parts
- Fitment help before you buy
BMW Gen1 B58 Stage 1 Performance Camshaft - 270°/268° cams to suit BMW's Gen 1 B58 engine with bolt on intake, exhaust and turbo upgrades. For an engine producing around 550-750hp running a 58-68mm turbo.
Still maintains full use of Valvetronic and Dual VANOS for good throttle response and wide power band. Must have valve spring upgrade, Kelford Cams recommend valve spring KVS57-BT.
Spring Kit Specs (Optional but Recommended)
90lb seat pressure at 36.5mm installed height. 193lb at 11.0mm valve lift. Spring coil bind height at 23.6mm.
BMW have released these engines in several revisions, To simplify things the Kelford team have named these revisions Gen 1, Gen 1.5 & Gen 2 (See Guide on 3rd Pic to choose which one you need)
Gen 1 B58 (2016-2019 F-series: M140i, M240i, 340i, 440i, 540i, 740i, X3/X4 M40i)
| 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.
- Orders ship from Dallas, TX in 1–2 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
Brian Crower Connecting Rods - BC6321HD
NGK 94201 Spark Plugs - Gen 1 B58
Forge Motorsport Oil Catch Tank Kit - A90/A91 Supra & G29 Z4 B58
