Looking to get the most out of your G8x M3/M4? Fabspeed has the answer with our Turbo Back Exhaust Package. Starting with our Sport Cat Downpipes that feature high quality HJS catalytic converters. This guarantees the most exhaust flow, reliability, and sound. Then, we use our unique intermediate X-Pipe that features two X-Pipes for proper exhaust scavenging and sound balance. And finally our Valvetronic exhaust, which features Helical Valves from the U.K. that are plug and play with the factory valve controllers. This system is your ticket to bolt on sound and performance without any loss of functionality or CEL’s (Check engine lights).

SOUND:

Treat your ears to that iconic BMW straight six symphony! You’ll no longer have to suffer the anemic OEM sound that BMW blighted this model with. The whole tone of the exhaust changes, with a throaty note that sounds every bit of the 500 HP you have on tap. In the loudest M setting, the exhaust is deep and powerful with very loud and prominent overrun pops and burbles. You’ll actually hear the turbos spool when letting off the throttle. With the car in comfort mode, things are much more tame. No pops/burbles and drone is nowhere to be found. In cabin conversations are just as easy as they were with the stock exhaust system.

POWER:

Our full Turbo Back Exhaust Package really frees up exhaust flow on the G8x. On our in-house DynoJet, we saw max gains of 47 ft/lbs of TQ at 3,300 RPM and 41 WHP at 6,500 RPM. That’s 47 crank HP! Take a look at our dyno graph and you can see that power is gained throughout the entire power band.

INCLUDES:

• Fabspeed Sport Cat Downpipes
• Fabspeed Intermediate X-Pipe
• Fabspeed Valvetronic Exhaust

FEATURES:

• Fits all BMW M3 & M4 (G80/G82) sedan/coupe vehicles including Competition Models worldwide (2021+) (RWD & AWD)
• Constructed from CNC mandrel-bent 14-16 gauge T304L stainless steel
• Laser scanned and CAD designed for perfect OEM fitment using Ametek Handyscan 700
• Includes Deluxe Quad-Style Tips in your choice of finish
• World’s first and only “Double-X” midpipe design includes two investment cast “X” sections for increased exhaust scavenging, resulting in a throaty exhaust note with the least amount of rasp
• Uses aerospace quality Helical Limited exhaust valves imported from the U.K.
• Retains factory valve functionality for “plug and play” installation
• Light weight design saves 10 lbs / 4.5 KGs compared the factory system
• We use a German-made HJS HD tri-metallic 200-cell catalytic converter for the best performance and reliability
• No CEL (Check Engine Light) guaranteed
• Simple bolt-on installation, no cutting or welding required