American Racing Solutions® GEN III HEMI Billet Aluminum Belt Tensioner Pulley

Regular price$575.00
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Ceramic Bearing Option
Pulley Size
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Compatible: (5.7L/6.1L/6.4L)

2005 - 2023 Chrysler 300

2008 - 2023 Dodge Challenger 

2006 - 2023 Dodge Charger

2006 - 2023 Dodge Durango 

2005 - 2008 Dodge Magnum

2003 - 2010 Dodge Ram 1500/2500/3500

2011 - 2023 RAM 1500

2011 - 2023 RAM 2500

2011 - 2023 RAM 3500

2005 - 2023 Jeep Grand Cherokee 

38 LB Spring

Billet Aluminum

Clear Anodized

Supplied with 70mm clear anodized billet pulley and mounting bolt


If you are running a supercharged Charger, Challenger, Grand Cherokee, then you know that your factory belt tensioner was not designed to stand up to the stress and strain of the added HP and Torque, especially if you are racing.  Our Street Performance Tensioner is fabricated from 6061-T6 Billet Aluminum, not cast, and features nearly 2x the spring tension vs. the stock item.  Internal components include a TGP shaft, hardened bushings, proprietary spring, and thrust bearings make this the strongest and smoothest belt tensioner on the market.  It has been tested and proven on the DYNO and the Track and will reduce if not eliminate belt slip, which will increase boost and HP.  Best of all, it is a direct bolt-on replacement for the stock unit, no brackets, fittings or adaptors are needed.  Recommended for cars making up to 700 HP.  We are so confident that our tensioner will not bend or break that we will guarantee it for life.

Upgrade your pulley to Ceramic Bearings! 

Serious racers are constantly pushing the envelope, and everyone knows that shaving off .001’s of a second from their ET, which translates into more win lights.
Ceramic hybrid bearings use ceramic balls and steel races. Ceramic balls weigh up to 40% less than steel balls, depending on size. This reduces centrifugal loading and skidding, so hybrid ceramic bearings can operate up to 50% faster than conventional bearings. This means that the outer race groove exerts less force inward against the ball as the bearing spins. This reduction in force reduces friction and rolling resistance. The lighter ball allows the bearing to spin faster and uses less energy to maintain its speed.

Ceramic silicon nitride balls exhibit much higher hardness than steel balls resulting in at least ten times greater ball life due to the ability to hold the surface finish longer. The ball has dramatically smoother surface properties than the best steel ball resulting in less friction between the balls and bearing race surfaces. Thermal properties are also significantly improved over steel balls resulting in less heat buildup at high speeds. Ceramic has 35 percent less thermal expansion, 50 percent less thermal conductivity, is lighter weight, and is non-corrosive.

We are so confident that our Street Performance Belt Tensioners are the strongest and most reliable on the market that we guarantee our product for life against bending or breaking under regular use.
American Racing Solutions
American Racing Solutions believes in the age old adage that “necessity is the mother of all invention.”  Anyone that is racing a supercharged muscle car knows that the stock belt tensioner on their car 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 and Pulleys, which are designed and fabricated from 6061-T6 Billet Aluminum (not cast).  Every item in the line has been designed to be a direct bolt on replacements for the original/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.  Every tensioner that we sell is guaranteed that it will not break or bend.  Yeah, they’re that good.

In addition, we pride ourselves on our partnership with our customers and our racing partners.







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