1500HP+ / WHEELIE CONTROL / LIMITED STREET USE These KellTrac HPX Spec Assembled Viking Performance based S550 Mustang Coilovers for the S550 Mustang were created based on YEARS of experience! We have taken what we have learned since 2014 and implemented it all into this strut system, making it the most powerful Drag Race inspired system ever! By working with one of the world's leading double and triple adjustable shock manufactures we were able to select drag race specific compression and rebound valving that is unlike any other stock replacement strut valving on earth! Gone are the old days of wanting a car to "pop wheelies", and gone are the old days of "picking and choosing" a valving that may or may not work. These adjustable KellTrac struts were designed with the ultimate hardcore drag racer in mind for ULTIMATE WHEELIE CONTROL. FEATURES: -ASSEMBLED, READY FOR INSTALLATION! -Designed to be a stock replacement coilover kit for drag race use -Dual Spring design for superior shock control -Adjustable Valving based on power level and surface conditions -Removes front sway bar, because drag race -Designed around OEM fitment specifications -Constructed of high quality aluminum material -Quality anodized coating to resist corrosion -Industry unique valving and spring combination, for ULTIMATE WHEELIE CONTROL BENEFITS: -Promotes more traction when adjusted properly -Controls weight transfer better than any other offering -Allows for more power to be applied due to more smooth shock control -Allows user to adjust to various conditions -Designed to help prevent excessive wheelies in applicable scenarios -Can help promote wheelies when needed (No-Prep, consultation will be needed) -Simple installation - Bolt in, Align and GO! *FOR OFF-ROAD USE ONLY!* *DUE TO THE CUSTOM NATURE OF THIS PRODUCT, THERE IS NO IMPLIED WARRANTY*Learn More