American Racing Solutions COPO Magnuson Billet Racing Belt Tensioner 50 lb. Spring (86201)
Improve supercharger belt control on your Magnuson-powered COPO Camaro with the American Racing Solutions COPO Magnuson Billet Racing Belt Tensioner. Specifically engineered for COPO Camaro applications equipped with the 350ci LSX engine and Magnuson TVS2650 supercharger, the ARS 86201 is built to maintain reliable belt tension under extreme boost, high RPM, and demanding drag racing conditions.
Precision CNC-machined from solid 6061-T6 billet aluminum, this purpose-built racing tensioner delivers the strength and rigidity required for serious supercharged performance. A custom-wound 50 lb. high-tension spring provides significantly increased belt tension for improved belt grip, helping reduce unwanted slip during hard acceleration and high-RPM operation.
The ARS tensioner also utilizes a hardened steel shaft and heavy-duty bearings to withstand demanding supercharger belt loads. Its anodized finish adds durability while helping reduce belt wear. Designed as a direct bolt-on replacement for the factory tensioner used on compatible Magnuson-supercharged COPO builds, the 86201 provides a clean, purpose-built upgrade without requiring adapter plates or unnecessary fabrication.
Features
- Purpose-built racing belt tensioner for Magnuson-supercharged COPO Camaro applications
- Designed for 350ci LSX engines with Magnuson TVS2650 superchargers
- Custom-wound 50 lb. high-tension racing spring
- Provides increased belt tension for improved supercharger belt grip
- Helps reduce belt slip under extreme boost and high-RPM operation
- CNC-machined from solid 6061-T6 billet aluminum
- Billet construction instead of cast aluminum
- Hardened steel tensioner shaft
- Heavy-duty bearing construction
- Anodized finish for increased durability and reduced belt wear
- Designed for demanding drag racing and high-horsepower applications
- Direct bolt-on replacement for compatible factory tensioners
- No adapter plates required
- Available with steel or ceramic pulley bearings
- Tensioner-only configuration available
- Proudly made in the USA
Built for Magnuson TVS2650 COPO Applications
The Magnuson TVS2650 can place substantial loads on the supercharger belt drive, especially during high-boost and high-RPM operation. Maintaining proper belt tension is critical for keeping the supercharger drive operating consistently. The ARS 86201 uses a 50 lb. racing spring to increase belt tension and help minimize slip when the system is subjected to extreme loads.
Performance Benefits
- Increased belt tension for high-output supercharger combinations
- Helps reduce supercharger belt slip during hard acceleration
- Improves belt engagement at elevated engine speeds
- Supports more consistent supercharger operation and boost delivery
- 50 lb. spring is engineered for demanding racing conditions
- 6061-T6 billet aluminum construction provides excellent strength and precision
- Hardened steel shaft and heavy-duty bearings support extreme belt loads
- Direct replacement design provides straightforward installation on compatible applications
Configuration Options
- 76mm 10-Rib Double Bearing Smooth Pulley with Steel Bearings - Default
- 76mm 10-Rib Double Bearing Smooth Pulley with Ceramic Bearings
- Tensioner Only - No Pulley
76mm Double Bearing Pulley
The default configuration includes a 76mm 10-rib double-bearing smooth pulley with steel bearings. Its double-bearing construction provides additional support for the demanding belt loads found in high-output supercharger applications. A ceramic bearing version is also available for customers looking to further upgrade their pulley configuration.
Specifications
- Product Type: Racing Belt Tensioner
- Application: COPO Camaro with Magnuson Supercharger
- Engine: 350ci LSX
- Supercharger: Magnuson TVS2650
- Spring Rate: 50 lb.
- Material: 6061-T6 Billet Aluminum
- Manufacturing Process: CNC-Machined
- Shaft Material: Hardened Steel
- Standard Pulley Diameter: 76mm
- Pulley Configuration: 10-Rib
- Pulley Type: Double Bearing Smooth
- Bearing Options: Steel or Ceramic
- Part Number: 86201
- Country of Manufacture: USA
Fitment
- Chevrolet COPO Camaro with 350ci LSX engine and Magnuson TVS2650 Supercharger
Additional Notes
- Specifically designed for compatible Magnuson TVS2650-supercharged COPO Camaro applications.
- This tensioner features a 50 lb. high-tension racing spring.
- The default configuration includes a 76mm 10-rib double-bearing smooth pulley with steel bearings.
- A ceramic bearing pulley configuration is available as an optional upgrade.
- A tensioner-only configuration without a pulley is also available.
- Verify engine, supercharger system, belt routing, and pulley configuration before ordering.
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