 | RENNtech ECU Upgrade SL 63 (R231- 669 HP / 734 TQ for M157) | $3,495 |
 | 100% Locking Limited Slip Differential for SL (R231) | $0 |
 | BMC Performance Air Filter For Mercedes Benz (M278 / M157 Biturbo Engines) | $229 |
 | Digital Suspension Lowering Module Optional Tablet- Samsung Galaxy Tab 2- 7.0" Display 8 GB | $350 |
 | Down Pipes with 200 Cell Sport Cats for SL Biturbo (R231) | $0 |
 | Down Pipes with Catalytic Bypass for SL Biturbo (R231) | $0 |
 | Mercedes 722.9 Seven Speed Transmission upgrade | $3,690 |
 | Performance Spark Plug Removal Tool for M157 & M278 | $149 |
 | Performance Spark Plug Upgrade for Biturbo Engines (M157 & M278) | $352 |
 | Radar Detector Installation | $3,495 |
 | RENNtech Deep Monolite Wheels for SL (R231) | $0 |
 | RENNtech Turbo Upgrade for 63 Biturbo Engines (M157- 833 HP / 980 TQ) | $11,850 |
 | RENNtech V3 Digital Suspension Lowering Module for Mercedes | $1,395 |
