Belltech Street Performance Twintube Rear Shock - Silver - GM Fullsize Truck 1963-72 42045 Kit includes a 26-1/2" long

Kit includes a 26-1/2" long x 9/16" diameter spring loaded top tube

Standard valves are lightweight 8mm diameter stem

Breather Tubes

fuel pump or even worse

Belltech Street Performance Twintube Rear Shock - Silver - GM Fullsize Truck 1963-72 42045 Kit includes a 26-1/2" longStreet Performance Premium Replacement Twin Tube Gas Charged Shock Absorber for Lowered Truck and SUV See Application Gude For Fitment Large 45mm body diameters and twin tube design allow for larger oil volume and better heat dissipation leading to increased shock life Large 35mm piston and valves allow greater hydraulic control during quick wheel movements and long shock travel Low friction sealing and guide system? creates a quick reacting damper