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- Performance Aero Upgrades
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This product was last offered at the strikethrough price on
08-18-2026
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-29-2026
This product was last offered at the strikethrough price on
08-18-2026
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
Unlock a whole new level of performance and style with Turner Motorsport's G80 M3/G82 M4 Stainless Steel Race Catback Exhaust and FREE Carbon Fiber Rear Diffuser. This Doorbuster combo gives your BMW enhanced sound, increased power, and striking exterior appeal—all in one package.
G80/G82 Stainless Steel Race-Inspired Catback Exhaust System
Experience the ultimate exhaust upgrade for your BMW G80 M3 or G82 M4. Designed to extract the full potential of the S58 twin-turbo inline-6 engine, Turner Motorsport’s stainless steel catback exhaust delivers improved power, weight reduction, and a breathtaking exhaust note. If you thought the stock exhaust was impressive, this system takes it to the next level.
Weight reduction and performance gains: Shed 26 pounds compared to the factory system, with dyno-proven gains of up to +10 HP and +14 ft-lbs of torque. Precision engineering: Constructed from dual 3.0" T304 stainless steel piping, this exhaust system features a straight-through design for optimal flow, providing smoother power delivery across the RPM range. Enhanced sound: Get that signature aggressive exhaust tone with an X-pipe replacing the restrictive middle muffler, letting the sonorous roar of the S58 engine take center stage. Pair this with Turner’s S58 intake system to further boost mid-range torque by an additional +23 ft-lbs and horsepower by +17 HP. The Turner Stainless Steel Race Catback Exhaust is a direct-fit, bolt-on solution that uses factory mounting points for a hassle-free installation.
Features include:
3.0" stainless steel mandrel-bent tubing for superior flow Back-purged and TIG-welded for maximum strength and durability Slip joints for optimal fitment adjustment Available with optional exhaust tips (slant cut or straight cut, 4.0" outlet) Get the full Turner Motorsport Race-Ready Exhaust system for unmatched sound, power, and weight savings.
G80/G82 Carbon Fiber Rear Diffuser – FREE with Purchase!
Complete your G80/G82’s transformation with the Turner Motorsport Carbon Fiber Rear Diffuser, included for FREE with this kit! This diffuser isn’t just an upgrade—it’s the finishing touch that enhances the aggressive styling of your M3 or M4 while perfectly accommodating quad 4.0" exhaust tips.
Made from hand-laid 2x2 twill weave carbon fiber and cured in an autoclave for superior strength and lightweight performance, this diffuser is designed to turn heads. The deep profile and bold fin design provide a race-inspired look that integrates seamlessly with your vehicle’s rear bumper.
Features include:
Direct bolt-on installation using factory mounting points Aggressive fin design that highlights the G80/G82’s bold lines Lightweight carbon fiber construction with a high-gloss finish for UV protection Upgrade your BMW with Turner Motorsport’s Carbon Fiber Rear Diffuser for a high-performance look and aerodynamic function.
Get the Ultimate Performance Combo
This exclusive Doorbuster kit offers the perfect blend of performance and style. From the stainless steel race-inspired exhaust system to the sleek carbon fiber rear diffuser, Turner Motorsport has you covered with precision-engineered upgrades that boost both curb appeal and driving dynamics.
Unlock your BMW’s full potential today with Turner Motorsport’s performance exhaust and carbon fiber diffuser kit!
The Akrapovic Rear Carbon Fibre Diffuser - High Gloss Black | G80 M3 G82 M4 is a premium accessory designed to elevate the aesthetics and performance of your BMW. Crafted in-house with ABE type approval, this lightweight carbon fibre diffuser highlights the tailpipes of the Akrapovič exhaust system, creating a striking visual impact. The updated version features a high-gloss black painted frame, ensuring a seamless integration with the rear of your vehicle. Compatible with G80 M3, G82 M4, xDrive, CSL, LCI, and M4 (G83) Competition models, this diffuser is a perfect blend of style and functionality.
Transform your BMW with the Akrapovic Rear Carbon Fibre Diffuser - High Gloss Black and experience a perfect combination of style, performance, and craftsmanship.
The Carbon Fibre Mirror Cap Set - Matte - G42 G80 G82 G83 G87 is the ultimate customization upgrade for BMW M2 Coupé, M3, and M4 models. Designed to enhance the vehicle’s aesthetics, these mirror caps are crafted from high-grade, lightweight carbon fibre, offering a perfect blend of durability and style. The matte finish provides a sleek, modern look that complements the car’s design lines while seamlessly pairing with other performance-enhancing accessories like the Slip-On Line (Titanium) exhaust and carbon-fibre rear wing. Handcrafted by skilled specialists, this mirror cap set is a unique addition to your BMW, ensuring a premium finish. Please note that this product is not compatible with right-hand drive vehicles. It is, however, compatible with M3 and M4 LCI versions, making it a versatile choice for BMW enthusiasts.
Upgrade your BMW with the Carbon Fibre Mirror Cap Set - Matte - G42 G80 G82 G83 G87 and experience the perfect combination of style, performance, and craftsmanship.