RENNtech | Stainless Steel Sport Mufflers w/Electronic Valves | S63 AMG | W222 | 5.5L BiTurbo V8 | M157 mercedes-benz-s-class-coupe--217---2015-2017--s-550-esr1614210 The end result is nothing

The end result is nothing short of spectacular with the RENNtech turbo package creating up to 818 hp and 820 lb-ft

RENNtech's valved sport mufflers utilize OEM electronic actuators for seamless operation and integration

628 whp @ 6

Range Rover Sport SVR (L494/LW) 2014 - 2021

Matte Finish

RENNtech | Stainless Steel Sport Mufflers w/Electronic Valves | S63 AMG | W222 | 5.5L BiTurbo V8 | M157 mercedes-benz-s-class-coupe--217---2015-2017--s-550-esr1614210 The end result is nothingRENNtech Stainless Steel Sport Mufflers w Electronic Valves for the W222 S63 AMG BiTurbo. Gains: up to 10 HP & 15 TQ. RENNtech Sport Mufflers are made out of T 304 stainless steel (SS) and 100% hand crafted in the USA. This exhaust system is rigorously tested to remove any unwanted resonances in the cabin to deliver a deep sound that keeps with the character of a luxury performance vehicle. Our mufflers with 2 3 4 inch diameter tubing offer lighter