MMX G80/G81 M3 & G82/G83 M4 Underbody Chassis Brace

On the G8x M3 and M4, the factory underbody brace limits how big an aftermarket exhaust can be. MMX's replacement brace bolts into the same spot but adds 15 mm of exhaust clearance and keeps the original ground clearance. It also adds stiffness to a key part of the chassis.

What you get

• 15 mm more exhaust clearance than the stock brace, less chance of pipe contact.
• Billet 6061-T6 aluminum, CNC machined and trimmed of excess material.
• Increased chassis rigidity for stability and response.
• Direct OE replacement in the factory location.

Brand: MMX · Part #: MMR13-1601

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• 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.