RENNtech Performance Front Rotors Upgrade | E63 (W/S 213) | SLS AMG (C197) | SL55/63 (R230) | GLC 63 (X/C253) | C63 Black Series (C 204) mercedes-benz-gl-class--166---2013-2016--gl-450-biturbo--2015--esr1226392 With the proprietary RENNtech ECU

With the proprietary RENNtech ECU Tuning the C217 - S560 gains up to +100 HP and +102 LB-FT

Cartridge shaft is larger and stronger to support larger wheels

For example

Mercedes M178 engine performance when measured

600 RPM Crank Performance Numbers are calculated with a 17% Drivetrain loss on 4MATIC vehicles

RENNtech Performance Front Rotors Upgrade | E63 (W/S 213) | SLS AMG (C197) | SL55/63 (R230) | GLC 63 (X/C253) | C63 Black Series (C 204) mercedes-benz-gl-class--166---2013-2016--gl-450-biturbo--2015--esr1226392 With the proprietary RENNtech ECURENNtech Performance Front Rotors E63 (W S 213) SLS AMG (C197) SL55 63 (R230) GLC 63 (X C253) C63 Black Series (C 204) For: E63 (W S 213) SLS AMG (C197) SL55 63 (R230) P30 only GLC 63 (X C253) C63 Black Series (C 204) The RT Performance Brake Rotors are an upgrade and direct replacement for the OE brake rotors with no modifications necessary. The rotors bolt directly to the car and fit perfectly with Mercedes Benz AMG OE calipers and the iron rings