b'GM F/X AUTOX-STARRSRT/ARS Double Adjustable Front Shocks with Canisters:oCutting Edge Shock Technology with Decoupled,Digressive Pistons Follows Rough AutocrossSurfaces Better than ANY Shock oFastest Responding Shock in Current RacingTechnology / Highest Grip on Irregular Surfaces oExternal Gas Canister & Amazing Low RodPressure Makes These the Highest Grip ShockAvailable for Autocross oRon Sutton Famous Secret Sauce High GripFront Valving Utilizes Tie-Down Technology toCreate a Mid-Corner Roll Through Zone forSignificantly Faster Corner Speeds oCompression Valving Adjuster on Canistero0-400# Range of Zero Number Tie Downwith Rebound Adjuster Dial on Shock o150#-200# (0.15 to .20 sec) Works Best for Tight Courseso250#-400# (0.25 to .50 sec) Works Best for Fast Courses Draco Professional Racing Front Springs: oPro Racing Teams Primary Use Only Two Spring Brands oDraco & Renton Both Make Hi-Tech Pro Racing Springs oWe Prefer Dracos use of 9000 Series Steel Spring Wire oNever Sags or Settles. Never Loses Rate. PeriodoSpring Rate Dyno Graph Sheet with EVERY Spring oVery Accurate & Linear Rates Over Long Travel oThe Common Car Guy Thinks a Spring is a SpringoBut Pro Racers Know Draco Springs Make a Better Handling, More Responsive & Higher Grip Race Car. Why Settle for Less?Tech Tip 25: The goal of dialing in your camber, caster & toe is to achieve the largest tire contact patch possible dynamically, when the car is in pitch & roll, under hard braking & turning in the corner. Forget static settings. Dynamic tire contact patch is our focus. Use tire temps across the tire to guide you on how well you are utilizing the entire contact patch. Plus, when the car is in dive, your front CG is lower AND more air flow is going over the car, instead of under it. Both of these benefits add front grip. Of course, the lower the car in dive, the lower the CG & the lower volume of airflow getting under the carthe larger the gain. But when the driver steps off the brakes, deep into the corner, the stored energy from the compressed front springs pushes the front end up in milliseconds. You instantly have less contact patch & a higher CG. In less than a second, youll also have more airflow under the front end. All bad. This is why most cars go into a push condition, upon brake release.Winning Racers learned they could modify the shock bleed circuit to keep the front end tied down for a short, controlled time. This allows the driver to get off the brakes earlier & carry much greater mid-corner speed. This time off the brakes & before throttle is called the roll thru zone. The rest of the time, the shocks work normal. We utilize tie down in all of our Secret Sauce shocks for Autocross, Track & Road Racing.175'