SLK 55 AMG
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RENNtech EVM | Exhaust Valve Module
RENNtech Exhaust Valve Module | Permanently Open Exhaust Flaps. 222 - S63 AMG Sedan and 217 - S63 AMG Coupe Pre-FaceLift MY2014-17 -
RENNtech ECU Upgrade for SLK 55 (R172)
RENNtech ECU Upgrade for 172 - SLK 55 AMG. Up to 448 HP + 423 LB-FT. Gains: +33 HP & +25 LB-FT