QA1 63 Series Shock 9" Rear 4C/4R BR20023 Energy's specially formulated Hyper-Flex(TM) polyurethane

Energy's specially formulated Hyper-Flex(TM) polyurethane cab and body mounts combine the best qualities of both: they're soft enough for a smooth ride

tight fin radiator cores

3/4 in Mounting Brackets

Slots are 4-3/4"L x 1-1/2"W to accommodate most combinations

770 in Height

QA1 63 Series Shock 9" Rear 4C/4R BR20023 Energy's specially formulated Hyper-Flex(TM) polyurethaneThe 63 Series is a sealed non rebuildable version of the 62 Series. These are most commonly used in coil over applications on both dirt and asphalt tracks. The twin tube design gives excellent feel and grip across all track conditions, but they really shine when there is a lack of grip. Built as a spec shock that could be used at specific tracks or series, the 63 Series can be used in any late model or modified. QA1 specializes in high performance