October 30, 2015

RENNtech AMG GT | Project Car | 2015 SEMA Show

For the 2015 SEMA Show in Las Vegas, RENNtech will be featuring an all-new Project Car to stun the Mercedes-AMG Tuning Industry.  After winning the Mercedes-Benz Mission: Metris Van Challenge at the 2014 SEMA Show with their astonishing DJ Van, RENNtech now unveils their latest project car, the AMG GT.  Located in the Optima Alley, outside of the North Hall and competing in the annual Optima Ultimate Street Car Invitational, RENNtech plans to set yet another standard with their well-known R-Performance Line upgrades.  The R1, R2, and R3 performance packages are established as the perfect balance between performance and value to satisfy all customer desires.

The RENNtech AMG GT Project Car is equipped with newly developed performance upgrades such as; ECU Upgrade, Coil-over Suspension, Downpipes with Sport Cats, and much more.  For aerodynamic enhancements, RENNtech designed an all-around aerodynamic package, consisting of Splitter, Diffuser with Exhaust Tips, Rocker Panels and Adjustable DTM-Style Wing.  The AMG GT sits aggressively on a custom set of RENNtech 10 Super-Light 3-pc forged wheels, manufactured by ADV.1 Wheels.

This RENNtech AMG GT Project will give a hint at what to expect from RENNtech’s R-Performance Line regarding Mercedes-AMG’s newest supercar.  The research and development for this mind-blowing vehicle has just begun, but this teaser shows the potential of this car.

October 21, 2015

RENNtech CLA 45 AMG ECU Now Available

RENNtech is pleased to announce our proprietary ECU upgrade for the Mercedes M133 engine that offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. The end result is nothing short of spectacular with the RENNtech ECU upgrade making up to an incredible 428 HP and 417 TQ at the crank!

Our Piggyback is still available but now RENNtech is ready to tune your CLA 45. Tuning the ECU allows us to do a more complete modification of the vehicle’s performance including drivability adjustments, shift improvements, speed limits, torque control and response times.

This ECU Upgrade is also available for the 156 GLA and 176 - A Class.

CLA 45 AMG (C217 - M133 2.0L Engine) Stock Performance:

  • 355 hp @ 6,000 RPM; 332 lb-ft @ 2,250-5,000 RPM
  • Note: Mercedes M133 engine performance when measured obtains higher numbers that rated from factory.

CLA 45 AMG (C217 - M133 2.0L Engine) Modified Performance:

  • 428 hp @ 6,200 RPM; 417 lb-ft @ 4,300 RPM

For More Information Visit our PRODUCT PAGE

June 23, 2015

RENNtech and ADV.1 present the World’s First 10 second AMG GT-S

10.94 seconds @ 128 mph

Another successful collaboration between world renowned Mercedes-Benz Tuner RENNtech and Official Designer of the Wheel Industry, ADV.1 Wheels. 

This GT-S is equipped with the latest RENNtech ECU upgrade and Downpipes with Sport Cats, as well as ADV5.2 Track Spec CS wheels.

The 10.94s @ 128mph quarter mile pass was achieved at Palm Beach International Raceway on June 19th 2015. 

This marks just the beginning of the RENNtech tuning and performance development for the AMG GT-S. 

Stay tuned for more updates!

RENNtech | ADV.1 AMG GT-S 10 second quarter mile video.

Photo Credit:  William Stern Photography

June 10, 2015

RENNtech AMG GT-S Dowpipes Official Release

RENNtech is proud to announce the official release of High-Performance Downpipes for the 190 - AMG GT-S.
The first production sets have been installed on our preferred loyal customer cars, and we are now ready for public orders.
Our Downpipes are designed and manufactured at the RENNtech Headquarters in Stuart, Florida.
RENNtech Downpipes are constructed from 304 High-Strength Stainless Steel and are equipped with 200 Cell Sport Catalytic Converters.
The Downpipes in the pictures are shown prior to ceramic coating in order to present the craftsmanship of these hand made products.
With the replacement of the stock downpipes we improve performance, reduce back pressure, increase initial turbo spooling and enhance sound output.
Performance gains up to 10HP and up to 10 LB-FT.

Note: These downpipes are intended for track use.

AMG GT-S Downpipes on RENNtech Website

February 25, 2015

RENNtech Has Moved to Stuart, Florida!

RENNtech has moved to a brand new, 36,000 sq/ft, state of the art facility located just north of the Palm Beach’s in Stuart, Florida.
Our new address is as of March 2nd, 2015:
7825 SW Ellipse Way
Stuart, FL 34997
Telephone: 561-845-7888

January 16, 2015

Renntech SL65 Gartel Art Car

This year’s Art Basel Miami event saw the creation and unveiling of the RENNtech Mercedes SL65 V-12 by artist Laurence Gartel.  The car is a vibrant depiction and inspiration of Miami’s colorful energy depicting a fusion between the reality of nature and the cybernetic fantasy of digital imagery.

The vehicle will be traveling across the country on display at many high profile events including the 2015 Grammy Awards held Febuary 8th in Los Angeles, CA.

Continue to follow it throughout the year and stay tuned for more events to be announced throughout the year.

RENNtech SL 65 AMG Gartel Art Car @ RENNtech Website

January 15, 2015

RENNtech DJ Van @ The Detroit Auto Show

via emercedesbenz:
Mercedes-Benz Vans is displaying a special DJ Van from RENNtech in the lobby of Cobo Hall during NAIAS press days, just outside of the Mercedes-Benz booth. Notable Detroit-based DJ Jenny LaFemme will be providing musical entertainment to those in the vicinity on January 12 and 13. The van features a fully-functional DJ setup and a raised roof with plenty of speakers to make its presence known.
The RENNtech DJ Van was one of four vans at SEMA in November 2014 at the Mercedes-Benz Vans “Mission: Metris” display. This gathering of concept vans was designed to be a first glimpse of the Mercedes-Benz Metris, which goes on sale in fall 2015 as both a passenger and commercial van. SEMA attendees were able to vote on their favorite concept via various social media channels. The RENNtech DJ Van was the clear winner of the Mission: Metris contest due to its striking design and overall audio/visual effects, and will be shown alongside the U.S. production versions of the Mercedes-Benz Metris at their premiere at NTEA in March.
Representatives from Mercedes-Benz Vans USA and RENNtech will be on site for product walkarounds and more detailed product information.

Read complete article here:

RENNtech DJ Van Tour Dates & Locations

As the RENNtech DJ Van travels the country, follow it along the way with this interactive map with previous and upcoming tour dates.

RENNtech DJ Van Travel Map @ RENNtech Website

July 19, 2010

RENNTECH SL65 Black Series churns out 1000 LB-Ft of torque!

RENNTECH and Domani Motors are proud to present this gorgeous SL65 Black Series equipped with RENNTECHs Performance Package 1.

RENNTECH also outfitted the vehicle with a Transmission upgrade and 100% Locking Rear Differential. These modifications are essential when attempting to transfer ridiculous amounts of power. It's amazing how the upgraded differential completely transforms the cars driving dynamics. The driver can now feel in command of the vehicle when pushing the Bi-turbo V12 to its limits. CLICK HERE to check out all of the RENNTECH SL65 Black Series performance products that are available.

In the end, this project was truly a great experience with the team over at Domani Motors. Now enough chit chat lets get to the good stuff, check out the pics and video...

June 16, 2010


RENNtech has released the all new V3 Digital Lowering Module. This V3 DLM is the easiest and most reliable application for lowering your air suspension equipped Mercedes or AMG vehicle. Take a look at the Press Release for all the information and details on what improvements have been made over the V2 module.

April 26, 2010


On April 25, 2010 in 90 degree weather with a 15 + mph head wind, a RENNtech modified CL65 with stock turbos and stock intercoolers went a blistering 191.186 MPH in the standing mile held in Miami during the Exotics Rally event.

The bad Benz did have the following RENNtech modifications: ECU/TCU, Ram Air, High Flow exhaust with 200 cell cats, upgraded intercooler pump and limited slip differential.

This is the same RENNtech CL65 that holds the quarter mile record of 10.62 @ 133.7 mph. It appears that this Benz may hold a couple of new records: fastest CL65 in the standing mile and the fastest Benz with stock turbos in the standing mile.

April 21, 2010

RENNTECH unveils 805HP Package for the SL65 Black Series!

RENNTECH has officially taken the already potent V12 Bi-Turbo Black Series to another dimension of the supercar stratosphere.

RENNTECH's been hard at work creating the most powerful yet drivable product innovations on the market for the SL65 Black Series. The objective of this performance package is to deliver substantial power improvements with minimal modifications made to the vehicle. RENNTECH's SL65 Black Series Performance Package 1 includes ECU/TCU tuning, Dual Intercooler Pump Upgrade, and Sport Mufflers. These additions create an astonishing 805 HP and 1000 LB-FT of torque at the crank!

Package pricing starts at $16,390 USD for the SL65 Black Series. We also highly recommend our Transmission Upgrade and Limited Slip Differential to compliment the RENNTECH Black Series Package. Contact our product specialists for more details at 561-845-7888.

April 14, 2010


This past weekend RENNTECH participated in a Standing Mile event at the Dade-Collier airstrip. There was a fairly decent turnout and our tuned C63 drew all sorts of attention. Last week, we fabricated some unique aero enhancements in-house for this event. These exterior additions bumped the cars standing mile speed up nearly 9mph - 185MPH! Proving that aerodynamics has just as much an effect on a vehicles ability to “go fast” as its actual performance output. Here are a few pics and a video of the C63 in "standing-mile trim".

April 13, 2010

New Product! RENNTECH S65 Traction Control Differential

RENNTECH is proud to announce the latest addition to our RENNTECH S65 portfolio. Introducing the all new S65 Traction Control Differential developed by OS Giken and RENNTECH! This highly engineered and effective TCD is the next generation of our very popular Super-lock LSD. Exclusively available through RENNTECH, the only tuning firm that offers 100% locking differentials for the bi-turbo boosted S65 AMG.

Contact us today for more information about our extensive S65 portfolio of performance products!

March 18, 2010


Here we have a few new videos of our pair of record breaking RENNTECH Benz’s.

One vehicle is Hartmut Feyhl's, owner of RENNTECH, very own C63. The other vehicle, a highly modded CL65, is owned by one of our great customers.

This video shoot was a celebratory shoot in that we had just set two quarter mile world records in each vehicle a few weeks prior.

Subscribe to RENNtechTV for more tire smokin' RENNTECH vids!

March 3, 2010


RENNtech introduces the all new G-Wagon trailer hitch mounting kit designed specifically for 2009 and up G-Wagons. Since Mercedes does not offer a trailer package for the current G-Wagons, RENNtech has engineered reinforcements to mount an OE Mercedes hitch to the vehicle. The heavy duty reinforcement attaches the Mercedes hitch to the G-Wagons frame. An optional modified rear impact panel is also available and required for installation of the hitch. Maximum trailer weight: 7000lb. (3178 kg.)

click to see full-size

Speak with your RENNtech sales representative for additional information.

February 11, 2010


RENNtech, the internationally recognized leader in Mercedes-Benz AMG tuning, has 20+ years of experience in developing the world's fastest AMG vehicles to claim the streets.

Two separate 1/4 mile records were made by two very impressive RENNtech cars at Palm Beach International Raceway on Wednesday February 10th, 2010.

The first record was made by a customer's CL65. The vehicle was recently upgraded with newly developed RENNtech modifications which created substantial power and torque improvements. A World Record quarter mile pass of 10.62 seconds @ 133.7 mph was clocked on the cars final pass of the night.

While everyone was celebrating the CL65's record pass, Hartmut Feyhl, owner of RENNtech, set a new record with his very own C63. The vehicle is fully equipped with RENNtech engine, driveline, suspension, and braking modifications, as well as a few other prototype products under development. Hartmut ran 11.6 seconds @ 125.3 mph, which is the Worlds quickest trap speed recorded for the C63.

2 separate 1/4 mile records were made by two separate RENNtech cars at Palm Beach International Raceway on Wednesday night.

One RENNtech customer now has the Worlds fastest CL65. It clocked a 10.62@133.7mph! Thanks to newly developed RENNtech mods.

RENNtech's very own C63 set the fastest trap speed for any C63 by posting up a 11.6@125.3mph!

It was a great night for RENNtech!

January 19, 2010


RENNTECH is happy to welcome the passionate, the car-culture-happy and even just the looking-to-pass-time public to tune in to RENNTECH TV - our newly launched YouTube Channel.

With over 5,200 views so far we're charging up to release some excellent videos that will satisfy even the most power-hungry speedfreaks. Think you can hang? Subscribe to our channel (LINK) and get notified when the latest stuff hits the web!

Check us out!

December 10, 2009


I would like to thank everyone who attended our 20th Anniversary Party for making it a great success. We have had so many requests for the 20th Anniversary Limited Edition concept drawings on display at the party that we will now be offering them in poster size (preview link).

I will personally sign your posters which can be purchased by calling us at 561-845-7888. These unique drawings make a great holiday gift for any car enthusiast.

For those of you interested in creating one of these rare vehicles please contact our senior product specialists.

Best wishes for a Happy Holiday season,


Hartmut Feyhl