S55
F8X / S55
2015+ M2 Competition, M3, M4, M4 Convertible
3.0L Inline-6, Twin-Turbocharged
Stock Power
415–470 WHP
Max: 900+ WHP with built motor
Fits these models
F80 Sedan
M3
F82 Coupe
M4, M4 Convertible
F87 M2
M2 Competition
Power stages
| Stage | 93 Octane | E70+ |
|---|---|---|
| Intake Only | 425–485 WHP | 425–485 WHP |
| Downpipes Only | 430–490 WHP | 430–490 WHP |
| Tune Only (Stage 1) | 480–540 WHP | 590–650 WHP |
| Tune + Intake | 495–555 WHP | 605–665 WHP |
| Tune + Downpipes | 510–570 WHP | 620–680 WHP |
| Full Bolt-On (Stage 2) | 530–590 WHP | 660–720 WHP |
| FBO + Flex Fuel | 530–590 WHP | 680–740 WHP |
| Turbo Upgrade + Tune | 600–680 WHP | 800–880 WHP |
| Turbo + FBO + Flex Fuel | 650–750 WHP | 860–960 WHP |
| Turbo + Built Motor | 800–950 WHP | 1030–1180 WHP |
Platform Guide
BMW F8X S55 Build Guide: From Stock to 900+ WHP
Everything you need to know about building a BMW F80 M3 / F82 M4 / F87 M2 Competition with the S55 twin-turbo inline-6. Covers power levels, mod order, known issues, and real dyno numbers.
Build one in the app
Configure parts, see real-time WHP estimates, and track your budget.