February 23, 2021

RENNtech returns to SRO for 2021 Pirelli GT4 America Season


RENNtech returns to SRO
for 2021 Pirelli GT4 America Season

Stuart, FL - RENNtech returns to Pro Racing with Chouest/Povoledo and the Westport #89 RENNtech Mercedes-AMG GT4.

RENNtech is proud to announce their return to the SRO Pirelli GT4 America Challenge with the Westport #89 RENNtech Mercedes-AMG GT4. The car will be driven by SRO-rookie driver Ross Chouest in the GT America Sprint -series and by Chouest and Aaron Povoledo in the SprintX -series.

September 25, 2019

RENNtech Motorsports – Scores Back to Back Podiums at Road America

The Torxen #89 RENNtech Motorsports AMG GT4 scores a P1 and P2 in the Pirelli World Challenge America PRO-AM Sprint X East -class at Road America.

September 13, 2019

RENNtech Motorsports heads to Road America

RENNtech Motorsports is returning to the track at Road America with Guy Cosmo and Patrick Byrne
behind the wheel of the #89 Torxen RENNtech Motorsports AMG GT4.
The RT Motorsports Team and both drivers are headed for the grid in the second-to-last race of the Pirelli GT4 America SprintX race at Road America, WI, September 20 -22, 2019.

August 31, 2019

RENNtech Motorsports withdraws from Watkins Glen Race due to Highway Accident

Early Tuesday morning, a tractor-trailer jack-knifed on Interstate 86 outside of Buchanan, VA, and set in motion a chain reaction which left one GT 4 - Racing Team, and two Ace Drivers in a race to make the grid at Watkins Glen International.

Six days earlier, RENNtech Motorsports, the Stuart, Florida based GT4-racing team led by Hartmut Feyhl, had announced agreements with Pro drivers Guy Cosmo and Patrick Byrne, along with a sponsorship deal with TORXEN for the remaining races of the 2019 Pirelli World Challenge GT4 America -series, starting with a Labor Day -weekend race at The Glen.

“We were excited to go racing with Guy and Patrick at Watkins Glen. The car and the team equipment was loaded up, strapped down, and had left for New York on Monday morning. We worked through the weekend to make time, and I was planning on meeting up with the car on Wednesday. Then, Tuesday morning i got a call from Stephen Franz, our truck driver.” Said Hartmut Feyhl.

The team trailer carrying the TORXEN #89 Mercedes AMG GT 4 race car, along with the team gear had ran been run off the road in an attempt to avoid a collision with another tractor trailer, sending the trailer and driver off the highway and down into a 100 foot ravine outside of Buchanan, Virginia.

Heavy Lifting - Trailer emerging form
the ravine with the help of Hugh's Transport.
Wednesday, 3 am, on Interstate 86 outside
Buchanan, Virginia

“Stephen tried to avoid the jack-knifed trailer in front of him on I-86 and ended veering off the highway. motor home trailer was completely destroyed and a tree-limb was going straight through the dash into the cabin. It is a miracle that he survived.” Said Feyhl.

Feyhl, Race Team Manager Sascha Kempter, and Team Member Sam Russell, took the first plane out from West Palm Beach, FL, to Virginia, to assess the situation and damages.

“It was shocking. We raced from Stuart,FL to Buchanan, VA in about 6 hours. When we got there the trailer looked to be in good shape, in relative terms, but it was wedged between the trees and we could not get into it. It was 3:30 am on Wednesday morning that the trailer was pulled out of the woods. On the inside, the car, tire racks, and all the equipment was in place, thanks to the proper loading and tie-downs our team had done.” Said Kempter.

Tree Limb - Image of tree limb piercing
the glove box. Stephen Franz was in the drivers
seat and avoided any serious injuries.

“Until Hartmut and Sascha arrived on the scene, no one really knew the full extent of the damage. On Wednesday, everyone started hitting the phones in a massive effort to exhaust every effort to salvage the race weekend. Guy and Patrick were notified around 10 a.m. to put them on alert of the circumstances as well as the effort to continue on. By that time we knew we had the drivers(s), the car, all the gear and the trailer… but we still were missing one rig, and had to work through the red-tape that goes with Interstate traffic accidents involving two semi-trucks! ” stated Eric Burch of P1 Groupe, RENNtech’s driver agency.

After logging 70 hours of work, a few hours of sleep, burning through phone batteries, and racing against the clock in an-all-out effort to get to the grid at Watkins Glen, the Team and Drivers were forced to make a decision on Thursday afternoon, and called off the race at Watkins Glen.

“The motor-home is gone, but the car and our equipment is in good shape and on its way back to Stuart. I am grateful that no one got seriously hurt, and for all the professionals in Buchanan, especially Hugh's Tansport, that worked incredibly hard to get us back on the road so that we could return home and go racing again.” Said Feyhl.

Walking Away Unharmed - Driver
of the rig was unharmed and was ready
to continue the journey. The rig was
destroyed beyond repair.

Beat, but not defeated, Feyhl and the Team returned to their Head Quarters in Florida on Friday, and began preparing the Team and the TORXEN #89 AMG GT4 for the next race, all while keeping an eye on Hurricane Dorian, a category 4 storm, looming southwest off the Florida Coast.
“As well as we plan, practice, and prepare, no amount of practice could ready us for that phone call on Tuesday morning. This experience with all the work and effort has made us more resolute, and we look forward to seeing the #89 TORXEN RENNtech car back on track with Patrick and Guy behind the wheel at Road America.” said Hartmut Feyhl.

The next stop for #89 TORXEN RENNtech Motorsports AMG GT 4 will be at Road America, WI, September 20 – 22, followed by the final race in the Pirelli World Challenge GT4 America series in Las Vegas, NV.

RENNtech Motorsports Trailer 
Stuart, FL Friday, Friday, August 23rd

August 15, 2019

RENNtech returns to GT 4 America Challenge with Patrick Byrne and Guy Cosmo.

Cosmo and Byrne will take the wheel of the Torxen #89 RENNtech Motorsports AMG GT 4 for the remainder of the SRO America’s Pirelli GT4 America schedule with races at Watkins Glen International, Road America and Las Vegas. The lineup of experienced drivers Cosmo and Byrne, together with main sponsor Torxen show great promise for the re-maining three races. Cosmo and Byrne, who previously won the Asian Le Mans series in the LMP3 class as co-drivers, will compete in 60 minute Sprint-X style race events.

June 11, 2019

A Test of Power and Performance Quarter Mile – The Drag Strip

On a hot and humid night in May, RENNtech arrived at Palm Beach International Raceway’s drag strip with a brand-new Mercedes-AMG GT 63 S 4-door Coupe. The menacing family “sedan” had left the factory in Affalterbach, Germany, with the AMG developed 4.0L (M177) twin-scroll BiTurbo V8 engine 630 HP and 664 lb-ft of torque, but since arriving in the United States, the car had benefitted from RENNtech’s engineering and know-how for developing some seriously fast Mercedes-Benzes in Stuart, FL.

March 6, 2019

Parker Chase and Reinhold Renger finish P2 with RENNtech Motorsports at the SRO America Season Opener.

Austin, TX - The return to the Circuit of The Americas marked the start to RENNtech Motorsports first full season of GT 4 racing. RENNtech Motorsports teamed up with drivers Parker Chase and Reinhold Renger for the SRO World Challenge Pirelli GT4 America double header with the #89 Mercedes-AMG GT4.

February 25, 2019

Parker Chase to Join RENNtech Motorsports for SRO America Season Opener

Parker Chase to Join RENNtech Motorsports
for SRO America Season Opener

NEW BRAUNFELS, Tex., STUART, FL (February 25, 2019) – After winning the Pirelli World Challenge SprintX Pro/Am title in 2018, 18 year-old champion Parker Chase is returning to the series this week for the season opening event at Circuit of The Americas with RENNtech Motorsports. The season will kick off with a double header race event at the Austin circuit, where Chase, a Texas native, will share the driving duties of the No. 89 Mercedes-AMG GT4 with Reinhold Renger in Pirelli GT4 America‘s East Pro/Am class.

“I’m thrilled to be returning to SRO America this weekend,” said Chase. “I got the call late Friday and the deal came together very quickly. I last raced in the GT4 class in 2017, and it’s been great to watch the competition in that series grow.  RENNtech Motorsports has put a lot of effort into this first event, and I’m looking forward to working alongside with Reinhold to bring them some strong results.”

Chase’s invitation to drive for the team came less than a week before the first practice session, but the young champion aims to quickly get up to speed with the new team and new machinery.

“We were looking for a strong silver to put in the Mercedes-AMG for this first event, and Parker Chase came highly recommended,” said team owner Hartmut Feyhl. “Given his excellent record in the series and being a local to the circuit, he seemed like the natural choice for our first event of the year. We’re proud to have him on board and are excited to get this event started.”

While the 2019 SRO America season is just getting started, Chase kicked off his 2019 race season with the Rolex 24 at Daytona, where he performed well during the IMSA WeatherTech SportsCar Championship season opener, before torrential downpour and hazardous track conditions ended the race early. He gained additional track time last week with a one-day test at Sebring International Raceway in preparation for the next rounds of racing on his 2019 calendar. Chase has yet to announce his race schedule for the full 2019 season, but has held discussions in both IMSA and SRO America, with hopes to make an announcement soon.

With the return to the Circuit of The Americas, RENNtech Motorsports starts their first full Season at the same track where they celebrated their inaugural race in November 2018. Having had a successful first outing at the 24H Series, RENNtech brings a huge Momentum to the first race of the season. Proving to be a serious contender right from the get-go, RENNtech Motorsports was able to set the Pole Position time and finished the race after 24 hours just 50 seconds behind the leader in class.

Teaming up with Parker Chase is veteran driver Reinhold Renger from Rothenburg, Germany. Reinhold is a long-time factory Mercedes-AMG driver and current Chief-Instructor of the AMG Driving Academy. He scored his biggest success at the 2008 24h-Nürburgring, scoring the win in his class. He is the current Blancpain GT Series Asia champion, which he won with the Mercedes-AMG GT4 as part of the Gruppe-M Team. At RENNtech Motorsports the speed and experience of Parker and Reinhold built a dynamic duo, ready to fight for the highest positions.

Official practice sessions for rounds one and two of the Pirelli GT4 America championship at Circuit of The Americas begin Friday March 1st. The GT4 America series will host an impressive field of 33 competitors on the 3.4 mile, 20 turn, permanent road course, the arguably most prestigious race-track in North America. Race one will begin Saturday, March 2nd at 1:05PM Central, followed by race two on Sunday, March 3rd at 10:10AM; both races will air live on www.world-challenge.com.

January 15, 2019

Sufficient is not enough

The Rolls Royce cars are the epitome of luxury and comfort. For years Rolls Royce did not bother with performance figures, and if you insisted, the answer was sufficient. In 1988 that was 200 hp from a 6.75 L V8 in a 5000 lb car, which is sufficient if you do not accelerate beyond the 25 MPH speed limit on Worth Avenue. In 1985 Grey Poupon advertising campaign featured a man chauffeured in a Rolls Royce searching for more mustard. The ad hit the nail on the head; the best way to enjoy a Rolls Royce was by hiring a chauffeur and enjoying a sandwich in the back seat, because driving the car was not much fun.

December 17, 2018

RENNtech Motorsports proves to be a serious contender in the international GT4 class

RENNtech Motorsports started its racing campaign by taking P2 in class and P9 overall in the 24H race at the CREVENTIC Hankook 24H GT SERIES at COTA in Austin, TX, November 18th, 2018.

November 6, 2018

This Mercedes Benz is not fast enough..

The most powerful street going Mercedes Benz out of the AMG factory, the SL 65 AMG Black Series stands as a testament to what AMG cars are all about.

October 8, 2018

RENNtech E63 S – Civil Unrest

Economies of scale give car manufacturers a big incentive to use the same engine across several model lines. However, things are not quite that simple, and while it is true that when you make more of something the unit cost drops, it does not always make sense to use exactly the same components for every application.

August 16, 2018

RENNtech sets record for fastest Mercedes on the Nordschleife

Flugplatz (“air field”), Schwedenkreuz (“Swedish cross”), Fuchsröhre (“foxhole”), Karussell (“carousel”) – the sections of the legendary Nurburgring-Nordschleife are well known to motorsports fans and track day enthusiasts around the world. No other race-track is more demanding, nowhere else can car and driver reach their limits as on this 20,832 km road-course. Therefore, record breaking attempts are virtually an everyday occurrence. The AMG specialists from RENNtech, conveniently located at the Nürburgring, were now able to set the record for the fastest street-legal Mercedes with their AMG GT R.

July 2, 2018

Mercedes-Benz SLR McLaren Supercar for the Track!

When Mercedes and McLaren combined their efforts in the early 2000’s to create a true supercar, they competed with two of the – until today – most iconic models, which created the definition “supercar”. Porsche’s Carrera GT and Ferrari’s Enzo.

May 8, 2018

RENNtech Unveils AMG GT R at Top Marques Monaco

Top Marques Monaco, Europe’s premier auto show for all supercars, rare classics and the latest ecological vehicles, just finished celebrating its 15th anniversary. The show quickly grew into one of the most imposing car shows worldwide, consisting of cutting-edge technology, top performance, and sophisticated styling. This truly is one of the most remarkable shows in the industry.

April 6, 2018

RENNtech’s Resto Mod | 1998 Mercedes-Benz SL500

A Resto Mod is a blend of old and new technology. This 1998 Mercedes-Benz SL500 RENNtech has been fully restored, maintaining the original classic styling while adding the latest technological advances in performance and comfort.

March 22, 2018

RENNtech E63 S AMG Shatters Quarter-Mile Record

Just when you thought Mercedes-AMG built the ultimate E63, RENNtech has allowed it to reach its full potential. At a recent testing session at Palm Beach International Raceway, they set a new record for the 4MATIC equipped E63 S. The unassuming sedan has their Stage 1 kit, which consists of new turbos, ECU, exhaust, and a new fuel system.

January 24, 2018

RENNtech ECU+ Upgrade for Mercedes-Benz S560 | 584 HP | 642 LB-FT

RENNtech proudly releases their ECU+ Upgrade for the Mercedes-Benz S560. Equipped with the Mercedes-Benz M176 4.0L V8 BiTurbo engine, RENNtech measured the stock performance with 484 HP and 538 LB-FT. With just the upgraded ECU software RENNtech gained up to 100 HP and 102 LB-FT over stock, bringing the maximum power output up to 584 HP and 642 LB-FT.

December 12, 2017

RENNtech SHATTERS ANOTHER WORLD RECORD | Supercar in Sedan’s Clothing RENNtech E63 S AMG

RENNtech’s first shot at improving the spectacular Mercedes AMG E-Class took the impressive Sports-Sedan to the next level with ONLY  ECU (Engine Control Unit) software tuning.

Delivered from the factory in Affalterbach with over 600 HP the AMG E63 goes from 0-60 in 3.3 seconds.    

December 7, 2017

RENNtech E63 S AMG 4MATIC+ ECU Upgrade 773HP | 778 LB-FT

is proud to release their ECU Upgrade
for the 213 - E63 S AMG 4MATIC+

Maximum Power Output:
773 HP 778 LB-FT @ crank
665 whp 669 wtq @ wheel

Gains up to: +82 HP +84 LB-FT

0-60 mph: 2.79 sec
0-100 mph: 6.61 sec
60-130 mph: 8.27 sec
1/4mile: 10.88 sec @129 mph

*Performed on non-prepped asphalt and with OEM, Street-Legal and/or Non-Performance tires.

Data measured with Racelogic Performance Box.