American Racing Solutions 90mm 12 Rib Single Flange Smooth Billet Idler Pulley Double Bearing (ARS9012MMF)
Engineered for extreme performance and belt control, the American Racing Solutions 90mm 12 Rib Single Flange Idler Pulley is built for high-horsepower applications where stability and precision are critical. Designed with a single flange and double bearing configuration, this pulley delivers improved belt retention and reliability under high RPM and load conditions.
Machined from premium 6061-T6 billet aluminum and finished with a clear anodized coating, this pulley provides a hardened surface for long-term durability and wear resistance. The 12 rib design maximizes belt contact, while the smooth surface ensures efficient operation in specific routing setups. For racers looking to gain every advantage, optional ceramic hybrid bearings offer reduced friction and increased efficiency.
Performance and Construction
This 90mm idler pulley is built for strength and consistency in demanding environments. The billet aluminum construction offers excellent durability while maintaining a lightweight profile, and the anodized finish enhances resistance to wear and corrosion.
Single Flange Design
The integrated single flange helps maintain proper belt alignment and prevents belt walk in high-load applications. This added control is ideal for aggressive setups where belt stability is critical.
Double Bearing Design
The dual bearing configuration increases load capacity and improves overall stability. This design helps reduce deflection and ensures consistent performance under extreme tension and high-speed conditions.
Features
- 90mm smooth pulley with 12 rib configuration for maximum belt contact
- Single flange design improves belt alignment and retention
- Double bearing construction for increased strength and stability
- Machined from high-quality 6061-T6 billet aluminum
- Clear anodized finish for hardened surface and corrosion resistance
- Lightweight design reduces rotational mass
- Designed for high-performance and racing applications
- Optional ceramic hybrid bearing upgrade available
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
- Universal Application (Verify size and rib compatibility for your setup)
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