TeraFlex partnered with FOX Factory to create a long-travel performance shock absorber with proprietary TeraFlex valving to handle the demands of a prerunner setup — resulting in the lightweight aluminum bodied FOX Factory Performance Series 2.0 Reservoir Smooth Body Shock w/ CD (Compression Damping) Adjuster. The 8-Position CD Adjuster tunes the compression damping from very soft to very firm. Testing with the FOX development team in the southern California desert resulted in one the most performance-oriented race-ready shocks available for its time. Our proprietary valving combined with data from on-site tuning and extensive driver feedback data resulted in a shock that can handle some of the toughest and fastest trails out there. With its race developed high-flow damping piston and TeraFlex Jeep-specific valving matched to our suspension systems, Performance Series 2.0 Reservoir Shocks provide a predictable ride quality capable of handling the toughest terrain. Our proprietary FOX valving codes in these prerunner shocks are only available through TeraFlex or one of our authorized dealers.