Magnum Double Row Timing Set for '55-'81 Pontiac 326-455 Chest Rig A major revision to our

A major revision to our Simpson Diamondback for 2021 combines a new Italian composite shell with a shorter chinbar and changes to the visor mounting for improved fit and function while also providing enhanced impact protection

Nitrophyl Float (Road Race) - molded wedge on both sides to control fuel when turing right and left

a spiral oil runner

while the 4140 Chrome Moly threaded tube adaptors and heat treated adjuster offer added durability

put it in the vise and start testing

Magnum Double Row Timing Set for '55-'81 Pontiac 326-455 Chest Rig A major revision to ourheat treated double row chain for mild street performance '55 '81 Pontiac 326 455.