This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.
Purchasing this product requires you to sign our Vehicle Compliance Waiver here.
The RennTech proprietary ECU upgrade for the Mercedes M157 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. Their ECU tune offers the biggest performance gains on the market; increasing performance from 556 HP and 550 lb/ft torque, to an astonishing 669 HP and 734 lb/ft at the crank! This allows the CLS 63 to run the quarter mile in an impressive 11.37 seconds at 125.01 mph with 0-60 mph coming in a mere 3.4 seconds.
Renntech was established in 1989 and started as a servicing company for AMG Mercedes Benz vehicles. Since then, it has been recognized as the leader in customizing and tuning AMG cars worldwide.
Today, the company has expanded and works with other European high-performance vehicles such as Audi, Bentley, Porsche, and more. This is proof that they keep on innovating their products and services.
History of Creating the Best
Since the company has been specializing in high-performance vehicles for the longest time, they were able to gain a lot of knowledge in turning what is already a good performing car to an even better one.
They have used what they have learned and created some of the best AMG cars in the market. One of their builds was recognized as the “Fastest Sedan in the World” by Car and Driver magazine in 1996. This is a testament to the dedication and craftsmanship put by the guys in Renntech in all of their products.
Form and Function
Renntech offers a complete lineup of performance enhancers for your vehicles. They have exhaust systems, suspension systems, aero packages, engine upgrades, body stiffeners gauges, and so much more. Basically, they have everything you need to make your vehicle perform better.
But what is good with Rennetch is that they combine both form and function at all of their parts. A good example is their aero packages. It gives the car a more aggressive look and turns it to a head-turner while improving its aerodynamics, making it stable at high speed and turn better in corners.
Purchase Renntech at Vivid Racing
If you are looking for a brand that is an expert when it comes to upgrading high-performance vehicles, then Renntech is the company for you. You know you will only get the best parts from the right guys. Whatever you are going to spend, it will be worth it. Visit Vivid Racing and check out their list that would fit your specific needs.
RENNTECH WARRANTYRENNtech's objective isto enhance the enthusiast's driving experience by designing and manufacturing the best performance and highest quality automotive products possible. RENNtech warrants that all RENNtech products are free from defects in material and workmanship.A. FOR VEHICLES NOT COVERED BY THE ORIGINAL VEHICLE MANUFACTURER'S NEW CAR WARRANTY
This warranty extends to the original owner only and is not transferable. The warranty begins on the date of purchase (invoice) and ends twenty-four (24) months from this date for parts, and twenty-four (24) months from this date for engine conversions. Due to the variety of modifications and changes made to MercedesBenz cars and/or engines that may affect the performance or durability of related components, RENNtech's obligation under this warranty extends only to the repair or replacement parts manufactured or sold by RENNtech and not for painting, labor, or other parts/components. To file a warranty claim, parts covered under warranty must be returned with proof of purchase, installation and removal date, date of part delivery, customer name and address, type of car, year, engine number, odometer reading, and VIN number. No claims will be considered without valid proof of purchase, all this information and the original RENNtech part. Return freight charges must be prepaid by customer. COD returns will not be accepted. All parts replaced under warranty will become the sole property of RENNtech.
B. FOR VEHICLES COVERED BY THE ORIGINAL MANUFACTURERS NEW CAR WARRANTY
This warranty extends to the original owner and is transferable. The warranty begins on the date of part purchase. If the vehicle is currently covered by the original vehicle manufacturer's new car warranty, RENNtech products are warranted for twenty-four (24) months or for the remaining term of the original manufacturers' warranty, whichever is longer. RENNtech will pay for the replacement part (new or remanufactured) and labor at the official Mercedes Benz standard warranty labor rate. Labor will only be covered under this warranty, if the original installation was performed at a RENNtech authorized facility. To obtain service under this warranty, the vehicle must be brought, upon discovery of a defect in material and workmanship, to the workshop of any RENNtech authorized dealer, during normal business hours
C. EXCLUSIONS FOR BOTH WARRANTIES (A AND B)
Parts showing evidence of misapplication, abuse, improper maintenance, alterations from their original configuration, or failure to follow installation instructions are expressly not covered by this warranty. RENNtech also reserves the right to make changes to products, or specifications at any time without obligation to modify earlier parts. No person, company, or other organization is authorized to assume for RENNtech any warranty responsibility or make binding judgments regarding warranties of any parts, which from time to time may become subject of a warranty claim.
D. RENNTECH'S LIMITED PRODUCT WARRANTY SPECIFICALLY EXCLUDES:
Shipping charges, towing and rental car charges, damage to a component or assembly due to installation of replacement parts with specifications that differ in any material respect from the original vehicle manufacturer's or RENNtech parts, damage resulting from the unauthorized modification of a RENNtech part, damage resulting from the use of other manufacturers products in conjunction with RENNtech product or system, damage to clutch due to power shifting or abuse, maintenance services and parts when replaced during maintenance such as spark plugs, lubricants, fluids, engine tune-up parts, replacement of filters, coolant and refrigerant, mechanical adjustments or repairs which result from normal wear and tear, drive belts, light bulbs, damage due to the failure to perform maintenance services at the specified intervals or in accordance with the instructions in the owner's manual from the original vehicle manufacturer or RENNtech product instructions, damage attributed to negligence, improper installation, improper treatment contrary to the instructions in the owner's manual from the original vehicle manufacturer or RENNtech product instructions, damage resulting from improper or contaminated fuel, damage to a RENNtech component as a result of a collision or improper collision repairs, any vehicle/products operated and used in a competitive event, custom designed competition parts, incidental and /or consequential damages, including loss of time, inconvenience or loss of the use of the vehicle. RENNtech's Warranty Policy only applies to RENNtech vehicles and products sold in the US and Canada.
E. ECU Re-Flashes
Re-Flashes of the upgraded RENNtech ECU Software are free for the original buyer of the Software during the OEM warranty period (4 years from the delivery date). After expiration of OEM warranty, or for second owner of RENNtech ECU Upgraded vehicles, RENNtech charges a service fee of $500 for regular customers and $200 for participants in the RENNtech Membership program, to re-flash the ECU with the originally purchased software.