R1 Performance Package for S 550 (W221- 413 HP / 422 LB-FT) mercedes-benz-s-class-coupe--217---2018-present--s-560-esr3248828 RENNtech Sport II Series |

RENNtech Sport II  Series | Cast Wheels | Set of 2 Front and 2 Rear | Front: 20" x 8

Up to 575HP and 312LB-FT

The RENNtech Track Series is a fully forged wheel derived from RENNtech’s extensive motorsports background and engineering expertise

creating low pressure areas that act like a vacuum

The RENNtech Stage I Turbo Upgrade comes with an RENNtech ECU Upgrade and the RENNtech Fuel System Upgrade

R1 Performance Package for S 550 (W221- 413 HP / 422 LB-FT) mercedes-benz-s-class-coupe--217---2018-present--s-560-esr3248828 RENNtech Sport II Series |R1 Performance Package for 221 S 550. Includes ECU Upgrade and Stainless Steel Header. Up to 413HP and 422 LB FT. Gains: +31HP & +31 LB FT The R1 performance package for the Mercedes 550 includes our proprietary ECU upgrade in addition to our stainless steel shorty headers designed specifically for the 550 V8 for a combination that provides increased performance, sound and throttle response across the vehicles entire powerband. R1 performance package