b'GM F/X RACE-STAR AIXShock Canister Roll Bar MountsPair for Rear:oClamps the Shock Canisters to 1-3/4 Rear Roll Bar TubesoCNC Machined Billet AluminumBlack Anodized oOne Allen Screw Tightens & Secures the Canister to Roll BarSKF Centerlock Hub/Bearing Units: oCenterlock 1-Nut Race Hub Assemblies oDesigned & Manufactured by SKF Racing Division oHeat Treat Case Hardened Alloy Steel oGenuine SKF Heavy Duty Hub/Bearing Assembly oSimilar Load Strength to C7 X-Tracker HubsRACE-STAR Centerlock Hub Floater Race Rear End:oHD Ford SVO Racing Housing / TIG Welded o3 OD x .188 4130 Chromoly Tubes / Fixture Welded Straight o-1 CAMBERED Snouts & Crown Splined Axles = MORE REAR GRIP!oSpeedway Engineering Heat Treated, Chromoly Racing Axles oRear Suspension & Brake Brackets Professionally Welded On oOil Cooler Ports, Vent, Fill & Drain Plugs Welded In / Inner Axle Seals Included Tech Tip 29: Designing race car suspensions involve many factors. Some complex. Some straightforward like understanding shear. For example,when you mount a bolt in double shear, it is literally supported on both ends,cutting the shear forces in halflike the example inside the red circle here. When you mount a bolt in single shear, like the blue circle, we are putting allthe shear forces trying to bend, break or shear the bolt off. Thats OK if wehave a strong enough bolt. RSRT utilizes 5/8 170KSI bolts (rated at43,500#) for all single shear lower shock mounts Front & Rear.1177'