MMX G80/G81 M3 & G82/G83 M4 Underbody Chassis Brace
Ships from the brand or distributor, usually in 3–7 business days
Make sure this fits your car
Fits: BMW S58: M3 (G80/G81), M4 (G82/G83). Confirm your exact car with us before ordering.
- Free US shipping over $250
- 30-day returns on unused parts
- Fitment help before you buy
Introducing the MMX Underbody Chassis Brace for the M3 and M4 (G80/G81/G82/G83). Each is a direct OE replacement, precision CNC machined from billet 6061-T6 aluminum, engineered to unlock an additional 15mm of exhaust clearance while adding chassis rigidity for improved dynamic performance. The MMX Underbody Chassis Brace has been developed specifically for the BMW G-Series M3 & M4 platform, providing an additional 15mm of exhaust clearance over the factory brace. This increased clearance helps accommodate larger diameter aftermarket exhaust systems, reducing the risk of contact whilst maintaining the original ground clearance. Beyond providing additional clearance, the MMX Underbody Chassis Brace also contributes to increased chassis rigidity, helping to improve overall dynamic performance.
Fits: BMW S58: M3 (G80/G81), M4 (G82/G83). Confirm your exact car with us before ordering.
Brand: MMX · Part #: MMR13-1601
BMW S58: M3 (G80/G81), M4 (G82/G83). Confirm your exact car with us before ordering.
| Model | Chassis | Years | Engine | Fits |
|---|---|---|---|---|
| M3 | G80/G81 | 2021+ | S58 (BMW M) | |
| M4 | G82/G83 | 2021+ | S58 (BMW M) | |
| M2 | G87 | 2023+ | S58 (BMW M) | |
| X3 M | F97 | 2020–2024 | S58 (BMW M) | |
| X4 M | F98 | 2020–2025 | S58 (BMW M) |
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
MMX Front Control Arm Spherical Bushings for BMW M2 (G87)/M3 (G80)/M4 (G82)
MMX Lowering Springs - BMW M4 (G82)
CTS Turbo BMW G80 M3/M3 Competition Lowering Springs
