b'GM F/X TRACK-PROSubframe Connectors:o2 x 3 x 120 Wall Rectangle Tubing oThrough Floor, Weld-In Subframe Connectors oGoes All the Way from the Front OEM Subframeto 3 Tall Crossmember of the Rear Frame Rails Below Laser Notched Crossmember:o2 x 3 x .120 Thick Mild Steel Rails / Extra Wide 64 to Fit Any Body/Chassis oLaser Cut Half Moon for Driveshaft Oval / Offset to Match Engine & Driveline OffsetoCut Widths Laser Marked on Each End / Makes it Quick & Easy to Fit to Your Car oWelds In Between Your Rear Frame RailsDriveshaft Loop: o1 x 2 Mild SteeloOval Loop oComes in 2 Halves oCut & Weld to MakePerfect Height for Your CarTech Tip 5B: Why do we use a Torque Arm for Autocross & 3-Links for most Road Courseapplications?Tuning takes time. Autocrossers typically have less time for tuning between rounds, where there is typically more time between sessions for track days & road racing. Another reason is the corner exit speeds for autocross do not vary as much as road courses. Forautocross, if we pick the right torque arm length, we have pretty good rear grip on all cornerexits. There isnt much lap time to be gained by tuning on it. On road courses there are big time gains to be had dialing in the rear anti-squat for the track & conditions. The primary advantage of a 3-Link is the tunability. With multiples holes in top link brackets,or a jack screw adjuster on the chassis, we can change the intersect point of the upper & lowerlinks (Instant Center) and therefore the Anti-Squat percentage. We can tune the car for theoptimum balance (compromise) of rear grip on entry versus rear grip on exit, for differenttracks, drivers and/or weather conditions.A good road race rule of thumb, or baseline, is to start with the Instant Center under the carsCG & tune from there. If you have a car with 55% front weight & 108 wheelbase, the CG is(108 x .55 = 59.4) 59.4 ahead of the rear axle centerline. Run the lower link level with theground & adjust the top link angle to form the intersection point (Instant Center) 59.4 aheadof the rear axle centerline.When you need more rear grip on corner exit under acceleration, we would adjust the top link(where it attaches to the chassis) downward, increasing anti-squat and rear grip on exit. Thiswill reduce rear grip on corner entry, so we cant get greedy, or the car will get loose on cornerentry under braking & turn-in. We do not want that. Were always looking for the bestcompromise that produces the best lap times . unless we have a decoupled 3-Link.891'