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Rear Diffuser
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This product was last offered at the strikethrough price on
06-14-2026
This product was last offered at the strikethrough price on
06-14-2026
Upgrade the exterior styling on your G80/G82 with our In-House designed and engineered ABS Rear Diffuser. Utilizing factory mounting locations and supplied hardware this diffuser is a direct bolt-on upgrade that can be installed directly in place of your factory diffuser. Featuring a deep profile, an aggressive fin design, and extending the entire width of the rear bumper, our exclusive design is sure to turn heads! Our engineers did an absolutely amazing job on this diffuser from the styling to the fit and finish that is guaranteed to stand out in the market.
Pay close attention to the design characteristics of the diffuser. The emphasized outline of the diffuser adds a whole new dimension to the rear bumper bringing out the beautiful body lines of the G80. By adding an aggressive fin design and boxing around the exhaust exits the rear/side view is almost transformed into a whole new sub model that BMW forgot to offer.
Features & Specifications:
Designed to accentuate the G80/G82 body lines
Perfectly houses quad 4.0" exhaust tips for upgraded and factory exhausts
Designed in-house using state of the art 3d laser scanning and CAD technology for precision fitment
Mounts to existing bumper insert mounting locations with supplied hardware
Made from lightweight, vacuum-formed ABS polymer, with UV-stabilized gloss black sheet
Mimics the lower section of the bumper with added character to amplify OEM features
Product Development:
Our Turner Motorsport Rear Diffuser was designed, engineered, tested and quality inspected by our Research and Development team. We strive for the highest level of precision and quality through leading edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modelling, rapid prototyping utilizing our in-house 3D printer, and rigorous long term product testing.
Turner Motorsport G80/G82 Gloss Black High Kick Trunk Spoiler & Rear Diffuser Doorbuster Kit
Take your G80 or G82 M3 to the next level with this exclusive Doorbuster Kit from Turner Motorsport! Featuring the Gloss Black High Kick Trunk Spoiler and Gloss Black Rear Diffuser, this kit is designed to enhance your M3’s rear end with performance-inspired styling that matches the power and precision under the hood.
G80 M3 Gloss Black High Kick Trunk Spoiler Upgrade your G80’s rear with the Turner Motorsport Gloss Black High Kick Trunk Spoiler, engineered to enhance both the aesthetics and performance of your M3. This trunk spoiler is designed to flow seamlessly with your vehicle’s body lines, adding a sporty, aggressive edge while improving aerodynamics. Its high-gloss finish and motorsport-inspired shape will set your M3 apart from the crowd.
Crafted from durable, UV-stabilized ABS polymer, this spoiler is built to last while providing a sleek, high-performance look. No drilling, cutting, or modifications are required—just clean the trunk surface, apply the spoiler using the high-strength dual-sided tape, and you’re good to go. For a personalized touch, the spoiler can also be painted to match or contrast your vehicle’s color.
Features & Specifications: Aerodynamic Design: High-kick shape enhances aerodynamics and adds an aggressive, sporty look. Durable Construction: Made from UV-stabilized ABS polymer for a long-lasting, high-gloss finish. Perfect Fitment: Designed to follow the factory body lines for a seamless integration. Easy Installation: No drilling or modifications required—simply adhere with pre-applied high-strength dual-sided tape. Customizable: Can be installed as-is or prepped for custom paint. G80/G82 Gloss Black Rear Diffuser Elevate your M3’s exterior with the Turner Motorsport Gloss Black Rear Diffuser. Designed to perfectly complement the aggressive styling of the G80 and G82, this diffuser features a deep profile and bold fin design that enhances the rear bumper’s contours. Crafted from lightweight, vacuum-formed ABS polymer, it’s both durable and sleek, ensuring that your M3’s rear end gets the attention it deserves.
This direct-fit upgrade uses existing factory mounting locations and hardware, making installation simple and hassle-free. The diffuser’s design adds dimension to the rear of the vehicle, accentuating the exhaust exits and giving the car an even more dynamic presence. Whether you're upgrading to larger exhaust tips or simply want to enhance the look of your M3, this rear diffuser is the perfect choice.
Features & Specifications: Aggressive Styling: Deep profile with bold fins and outlined design accentuates the G80/G82’s rear bumper and body lines. Perfect Exhaust Fitment: Designed to house quad 4.0" exhaust tips, perfect for both upgraded and factory exhaust systems. Precision Engineering: Developed in-house using advanced 3D laser scanning and CAD technology for a precise fit. Durable Construction: Made from lightweight, UV-stabilized gloss black ABS polymer for a durable, weather-resistant finish. Easy Installation: Direct-fit design mounts to factory locations with supplied hardware—no modifications required. Take your G80 or G82 M3 to the next level with this performance-inspired Doorbuster kit. Featuring the Turner Motorsport Gloss Black High Kick Trunk Spoiler and Rear Diffuser, this kit delivers aggressive styling, enhanced aerodynamics, and easy installation. Perfect for those looking to make a statement on the road, this upgrade combines precision engineering and OEM+ fitment for the ultimate performance aesthetic.
Upgrade the exterior of your G80/G82 with the unrivaled Turner Motorsport Carbon Fiber Rear Diffuser. This exceptional carbon diffuser sets a new standard in the market, surpassing even the gloss black ABS alternative. Turner Motorsport's in-house design and engineering deliver a fit, finish, and styling that outshine all others. The deep profile and aggressive fin design create a distinctive look, turning heads wherever you go. Pay close attention to the design details, emphasizing the outline of the diffuser and transforming the rear bumper's appearance. This diffuser is the final touch to your full carbon exterior upgrade, along with the Turner front lip and high kick spoiler.
FREE Doorbuster item: Turner Motorsport Carbon Fiber High Kick Trunk Spoiler
Transform your M3 with the Turner Motorsport Carbon Fiber High Kick Trunk Spoiler, a nod to the coveted E46 M3 CSL high kick wings. This aggressive performance aesthetic flows seamlessly into the body lines, matching the trunk lid, roof, and rear bumper. In-house designed at Turner Motorsport using 3D laser scanning and CAD technology for precision fitment, this gloss clear-coated spoiler adds a sporty style that sets your vehicle apart. Easy installation with pre-applied adhesive tape takes just minutes, and the spoiler can be painted for a color-matched look with standard body shop prep work.
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
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
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!