Viking’s B378AJ Crusader is tailored to big-tire Mustang drag cars making less than 600 horsepower. The “J” medium rebound curve supplies the control needed to manage rear movement without the excessive force intended for higher-power small-tire combinations.
This is a true competition shock with separate external compression and rebound adjustments. That range gives the tuner room to calm an aggressive hit, improve tire loading or tighten the chassis as track conditions change.
Key Specifications
- Crusader race-series rear shock
- “J” medium rebound valving for big-tire applications
- Best suited to combinations below 600 horsepower
- 19 compression settings
- 22 rebound settings
- 418 available compression-and-rebound combinations
- Adjustment knobs require no special tools
- Designed for standard ride height through approximately 2 inches lowered
Mustang fitment: 2018-2025 models listed for the factory MagneRide chassis configuration. This conventional race shock replaces the damper and does not preserve Ford’s electronic MagneRide function.
Viking part number: B378AJ
Installation note: Poly-bushed performance mounting can transmit more suspension noise than the factory rubber-bushed shock. Installed shocks are not returnable. Crusader shocks are intended for competition use and must be placed at Viking’s specified off-track settings when the car is not racing.
California Proposition 65 Warning: Cancer and reproductive harm — www.P65Warnings.ca.gov.
