Dinan Free Flow 304 Stainless Steel Valved Axle-Back Exhaust with Quad 3.5 in Black Ceramic Tips for BMW M3/M4 (F80 F82 F83)

Valved Rear Section with Quad 3.5 inch Black Ceramic Tailpipes for BMW F80 M3, F82 M4, F83 M4 by Dinan

Give your S55-powered BMW the soundtrack it deserves and a high-quality rear system that looks right at home on an M car. This valve-controlled rear silencer from Dinan delivers a richer tone, sharper response and a premium finish, all while retaining the everyday civility you want for commuting and long trips.

Built for the F8x chassis and engineered to work seamlessly with the factory valve motors and drive modes, this is the enthusiast’s choice for a direct-fit back box with quad black ceramic tailpipes. If you are searching for an M3 or M4 sports exhaust, performance rear section, valve-controlled muffler, quad tip black tailpipes or a cat-back alternative that bolts to the original mounting points, this system hits the brief.

Key reasons enthusiasts choose this Dinan rear section

• Proven gains on the dyno with increases of up to 5 hp, thanks to freer gas flow and reduced restriction
• Refined at steady speeds with the valves shut, then suitably aggressive under load when the valves open
• Full T304 stainless construction for strength, longevity and corrosion resistance
• Quad 3.5 inch ceramic-coated tailpipes in black with a subtle laser-etched logo for an OEM plus appearance
• Large 76 mm valve design is approximately 45 percent less restrictive than the factory setup for improved breathing
• Reuses OE valve actuators and integrates with M Drive for familiar Comfort, Sport and Sport Plus behaviour
• Direct bolt-on fitment using the original hangers and locations for a straightforward, hassle-free install
• Includes hardware and trims weight by about 3 lb compared with stock

How it sounds and drives

In Comfort, the valve control keeps cabin noise in check for relaxed cruising with minimal boom. Select a more spirited mode or lean on the throttle and the system wakes up with a deeper, motorsport-inspired note and a crisp bark on upshifts. It is the ideal balance for daily-driven M3 and M4 owners who want drama on demand without the constant drone.

Crafted to fit and built to last

Precision TIG-welded T304 stainless components, mandrel bends and Dinan’s exacting tolerances ensure a perfect fit on the F80 saloon, F82 coupé and F83 convertible. The ceramic-black tips resist heat staining and fill the rear diffuser beautifully for a purposeful, factory-plus finish.

What owners say

We have run this Dinan rear section on our own cars and installed it for many customers. The feedback is consistently excellent on the sound quality, the clean fitment and the way it transforms the driving experience without compromising day-to-day usability.

Compatibility

• BMW M3 F80 saloon
• BMW M4 F82 coupé
• BMW M4 F83 convertible

Ideal search terms include BMW M3 F80 rear exhaust, BMW M4 F82 back box, F83 quad tip black tailpipes, M3 M4 valve-controlled muffler, S55 performance exhaust, F8x sports exhaust, M4 Competition exhaust upgrade and axle-back alternative to a full cat-back.

In the box

• Dinan valve-controlled rear section in T304 stainless steel
• Four 3.5 inch black ceramic-coated tailpipes with laser-etched branding
• Mounting hardware for installation

Professional fitting

Want it installed properly first time? We offer expert fitting at MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Order today to unlock a deeper, more characterful M soundtrack, a premium finish and genuine performance benefits from a trusted name in BMW tuning.