R1 Performance Package for CLS 550 (C219- 422 HP / 421 LB-FT) bmw-7-series--e66---2001-2008--esr3332914 this forged design features much

this forged design features much tighter tolerances than spun multi-piece wheels

CLASS S LONG (W 221) 500 Blue Efficiency 4-matic [2 Filters Required] (HP: 435 | Year: 11 > )

the Deep Monolite Series also offers optional titanium lug bolts for enthusiasts seeking the ultimate finishing touch

Our ECU tune offers the biggest performance gains on the market with our dyno results increasing performance from 362 HP and 390 lb/ft torque

Gains: +15HP & +20TQ

R1 Performance Package for CLS 550 (C219- 422 HP / 421 LB-FT) bmw-7-series--e66---2001-2008--esr3332914 this forged design features muchR1 Performance Package for 219 CLS 550. Includes ECU Upgrade and Stainless Steel Header. Up to 420HP and 421 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 includes: RENNtech ECU