FAS Predator Incognito Lower Pulley — No Tune Required
Slip-on lower pulley adds 1.5–2 PSI boost with no tune required. 10% lighter than competition — reduces rotating mass and increases drivability. Full kit includes crank bolt, fasteners, Loctite, belts, and install instructions.
Technical Specifications
| Material | Aluminum billet, heat-treated |
| Manufacturing | Multi-axis CNC — 25+ years serpentine belt pulley manufacturing |
| Finish | Hard anodized, traction-tuned belt surface |
| Rib Options | 8-rib and 10-rib configurations |
| Diameter Options | Multiple sizes (application-dependent) |
| Install | Slip-on lower; no OEM balancer removal required |
| Boost Gain | +1.5–2 PSI — no tune required |
| Kit Includes | Crank bolt, fasteners, Loctite, belts, install instructions |
| Hellcat / Charger SRT Hellcat | 2015–2023 ✓ |
| RAM 1500 TRX | 2021–2024 ✓ |
| Jeep Grand Cherokee Trackhawk | 2017–2021 ✓ |
| Dodge Challenger Demon / Redeye | 2018–2023 ✓ |
| Dodge Durango Hellcat | 2021+ (verify fitment) |
About the Product
The FAS Predator Incognito Lower Pulley is a slip-on design that requires no OEM balancer removal, delivering an instant 1.5–2 PSI boost increase while maintaining factory warranty compatibility.
10% lighter than the competition — reduced rotating mass means improved throttle response and drivability alongside the boost gain.
Compatible with Hellcat, Redeye, Demon, Super Stock, Trackhawk, and TRX platforms. Every kit ships complete with crank bolt, fasteners, Loctite, belts, and step-by-step install instructions.