RENNtech Stage I Turbo Upgrade | M256 | 3.0L I6 Turbo EQ Boost | 505HP/460LB-FT | MY2018+ mercedes-benz-cla-class--117---2014-2019--cla-45-amg-esr4055727 200 cell sport catalytic cells

200 cell sport catalytic cells which are ceramic coated to reduce heat in the engine compartment as well as combat against thermal stress

The RENNtech R1 Performance Package is the perfect entry level performance upgrade for the E 63 AMG

The high carbon content and the chemical composition of the steel enable teh RENNtech discs to be more durable and lighter than its OEM counterparts

0L Engine) Stock Performance:

RENNtech Stage I Turbo Upgrade | M256 | 3.0L I6 Turbo EQ Boost | 505HP/460LB-FT | MY2018+ mercedes-benz-cla-class--117---2014-2019--cla-45-amg-esr4055727 200 cell sport catalytic cellsIncludes Turbo Upgrade, and ECU Upgrade. Gains: Up to +69HP +50LB FT RENNtech Stage I Turbo upgrade for the AMG 53 M256 AMG 3. 0L Inline 6 engine. RENNtech has been at the forefront of ECU tuning for over 30 years. Through our experience, countless hours of in house Research & Development, and extensive testing we ensure that all RENNtech Performance upgrades offer incredible performance gains as well as rock solid reliability. The RENNtech Stage I