American Racing Solutions provides the last racing belt tensioner you will ever buy.
Anyone that is racing a supercharged muscle car knows that the stock belt tensioner was not designed to stand up the stress and the strain of racing with increased HP and torque. We are proud of our line of Racing Belt Tensioners, which are designed and fabricated from 6061-T6 Billet Aluminum (not cast) and they are all direct bolt-on replacements for your stock tensioner (no adaptor plates or accessories needed).
Our Tensioners have been proven on the DYNO and the Race Track and will increase boost and HP by reducing or completely eliminating belt slip. As a result of our engineering and the use of custom fabricated springs, hardened steel shafts, needle bearings, and bushings our Tensioners will outperform anything on the market. No more broken, shredded or melted belts. We are so confident that our tensioners will not break or bend, that we guarantee them for the life of your car.
When Chris Lovett of Wichita Dyno contacted us asking if we had a tensioner for a Corvette engine the answer was no, BUT we would be happy to develop one. Chris was about to install a Procharger F1X Supercharger on an LS3 engine. For this application, the kit provided uses the GM stock tensioner for the LT4 engine. Within 2 weeks we shipped the prototype LT4 Racing Belt Tensioner to Chris and onto the engine it went. In back to back testing on the DYNO, our tensioner reduced belt slip through the curve adding nearly 4 LBS of boost. Highest recorded boost with the ARS Tensioner; 20.72 LBS compared to 16.44 LBS with the stock unit.
Gen5 Camaro Tensioner
Corvette ZR1 Racing Belt Tensioner
COPO/2.9L Magnuson Racing Belt Tensioner
COPO tensioner- 2.9L Whipple Supercharger – DOUBLE BEARING PULLEY