Select Vehicle

2014–2018 BMW M3 Engine Components FAQ's

Please read our FAQs page to find out more.

Is the S55 crank hub a concern on the F80 M3?

Crank hub slip can occur at higher power or heavy track use. Many owners add a one‑piece or pinned hub/capture plate as preventative insurance during builds.

What internal upgrades are common past bolt‑ons?

Forged rods/pistons and upgraded bearings support elevated boost on high‑power builds, but most street/track cars prioritize cooling, fueling, and tuning first.

Are cam upgrades worthwhile on the S55?

Mild cams can widen the powerband on high‑flow setups, but gains are often secondary to turbo, cooling, and calibration improvements for most users.