The RennTech R3 Performance Package is the perfect entry level performance upgrade for the CLK 63 AMG. RennTech package 3 includes everything found in our performance package 2 plus our stainless steel long tube headers for more performance and sound, our 100% locking limited slip differential to improve handling and traction in addition to our transmission performance upgrade.
The R3 performance package increases performance to 574HP and 543TQ at the crank, without sacrificing daily driver comfort or reliability and offer huge gains across the entire RPM range. Due to increased power and boost levels, 93 Octane or higher gasoline has to be used with R2 upgraded RennTech vehicles to avoid damage to the engine. States known for poor fuel quality have to be supplied with a lower power setup.