A low exhaust note with a free flow design
BMW F85 X5 M S63 4.4L Performance Engine Parts
- Catch Can
- Connecting Rod
- Cooling
- Crankshaft
- Cylinder Head
- Diverter Valve
- Exhaust
- Fueling
- Hoses
- Intake
- Oiling System
- Pedal Commander
- Performance Package
- Pistons
- Software
- Sprint Booster
- Throttle Controller
- Turbocharger
- Water-Meth
A more aggressive sound and increased power
Unleash the Full Potential of the S63 Engine
Unleash the Full Potential of the S63 Engine
Unleash the Full Potential of the S63 Engine
Offers a seamless transition from the turbine housing to your custom plumbing, minimizing turbulence and maximizing efficiency for high-horsepower builds.
2X Entries For Our 25th Anniversary Sweepstakes!
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
850+ Capable!
900+ Capable!
Quick connect union T-fitting for 1/4" Nylon
Your BMW's factory exhaust tips are fine for getting groceries, but if you've upgraded your valence or just want a rear-end aesthetic that matches your car's performance pedigree, "fine" doesn't cut it. It's time for an attitude adjustment.
10X Entries For Our 25th Anniversary Sweepstakes!
Add power, sound and unique style to your BMW X5/X6 M with this cat-back system which produced gains of up to +20 horsepower and +33 lbs. x ft. torque
This product was last offered at the strikethrough price on
05-27-2026
Light-weight titanium exhaust with a wonderful growl!