American Racing Solutions Street Performance Belt Tensioner (ARS9740ANP) - 2005-2010 Mustang GT / Shelby GT500
Upgrade your supercharged Mustang GT with the American Racing Solutions Street Performance Belt Tensioner, engineered to handle increased horsepower and boost levels while maintaining smooth and reliable operation. Designed for performance street builds, this tensioner delivers improved belt control, reduced slip, and more consistent power delivery.
Machined from 6061-T6 billet aluminum, this tensioner is significantly stronger than the factory cast unit. Internally, it features a TGP shaft, hardened bushings, proprietary spring, and thrust bearings to ensure smooth operation and long-term durability. Tested on both the dyno and track, this tensioner helps reduce or eliminate belt slip, allowing your supercharger system to maintain consistent boost and maximize performance.
Performance and Reliability
Designed for builds up to 700 horsepower, this tensioner provides increased belt stability without sacrificing drivability. The 38-42 lb spring offers the ideal balance of strength and longevity for street and performance applications.
Direct Bolt-On Upgrade
This tensioner installs as a direct replacement for the factory unit with no brackets, adapters, or modifications required. It delivers a straightforward upgrade with immediate performance benefits.
Pulley Options
This listing includes the tensioner with pulley as shown. Additional pulley sizes are available in 70mm, 76mm, or 90mm options in both smooth and grooved configurations. Ceramic bearing upgrades are also available for maximum efficiency.
Features
- Designed for 2005-2010 Mustang GT supercharged applications
- Machined from 6061-T6 billet aluminum for superior strength
- 38-42 lb spring tension for improved belt control
- Internal TGP shaft, hardened bushings, and proprietary spring
- Thrust bearings for smooth and consistent operation
- Reduces or eliminates belt slip to increase boost and horsepower
- Direct bolt-on replacement with no modifications required
- Recommended for builds up to 700 horsepower
- Includes pulley (as shown in product configuration)
- Compatible with multiple pulley sizes and styles
- Tested on dyno and track for proven performance
- Optional ceramic hybrid bearing upgrade available
- Lifetime guarantee against bending or breaking
Installation Notes
- Requires 1 5/8 inch clearance from mounting surface to front of tensioner
- Verify pulley size and configuration for your application
Ceramic Bearing Benefits
- Up to 40 percent lighter than steel balls for reduced rotational mass
- Operates up to 50 percent faster than conventional bearings
- Reduced friction and rolling resistance for improved efficiency
- Significantly longer service life and durability
- Lower heat generation at high RPM
- Improved resistance to corrosion and thermal expansion
Fitment
Fitment
- 2005 Ford Mustang GT
- 2006 Ford Mustang GT
- 2007 Ford Mustang GT
- 2008 Ford Mustang GT
- 2009 Ford Mustang GT
- 2010 Ford Mustang GT
- 2005 Ford Mustang Shelby GT500
- 2006 Ford Mustang Shelby GT500
- 2007 Ford Mustang Shelby GT500
- 2008 Ford Mustang Shelby GT500
- 2009 Ford Mustang Shelby GT500
- 2010 Ford Mustang Shelby GT500
- 2008 Ford Mustang Bullitt
- 2009 Ford Mustang Bullitt
- 1999 Ford Lightning
- 2000 Ford Lightning
- 2001 Ford Lightning
- 2002 Ford Lightning
- 2003 Ford Lightning
- 2004 Ford Lightning
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
