KellTrac S550 Mustang Spec Valving and Design Series Info Guide:
-Crusader: For cars that are primarily raced with "some" street use. Meant for Racecars to Weekend Warriors that race on the track and/or street, Low NVH
-Crusader Ultra-Spec: Best and most proven double adjustable shock available. Best when used with aftermarket mounts, from mild to wild! Moderate NVH
*Stock Style Design: Most common, direct stock-style replacement. Use if you have aftermarket shock mounts already or want lowest NVH with stock mounts
**INVERTED Design: Best design for performance and function. More axle clearance, easier to adjust, upper mounts incl., bumpstops incl., Moderate NVH
***INVERTED TRIPLE: If you only care about one thing, and one thing only, and that is - WINNING, no other shock will provide better performance. PERIOD.
These Viking Performance Shocks feature KellTrac spec'd compression and rebound valving specific for STREET, STRIP, PREP and NO PREP racing S550 IRS applications.
No other company has assisted more 1.19 or better sixty-foot times with 2005+ Mustangs!
*ALL KELLTRAC SPEC SHOCK, STRUT AND COILOVER PURCHASES INCLUDE LIMITED REMOTE SUPPORT*