Belltech Nitro Drop 2 Twintube Rear Shock - Black - GM Fullsize Truck 1967-72 HTA22ADP90 These steel rear control arm

These steel rear control arm bushings have spherical bearings in them just like a rod end

That's why AMP Research invented the patented PowerStep™

8" tube MAC-XC-1

and have evolved beyond their strictly-utility beginnings

Belltech Nitro Drop 2 Twintube Rear Shock - Black - GM Fullsize Truck 1967-72 HTA22ADP90 These steel rear control armNitro Drop 2 Twin Tube Gas Charged Shock Absorber For Lowered Applications See Application Guide for Fitment Large 55mm body diameters and twin tube design allow for larger oil volume and better heat dissipation leading to increased shock life Large 30mm piston and rebound valve eliminates oil deterioration to further improve durability Low friction sealing and guide system? creates a quick reacting damper that is sensitive to the smallest of motions