QA1 63 Series Shock 7" Front 5C/650R 29112BK Aluminum fittings have a o-ring

Aluminum fittings have a o-ring seal and a built-in hex with a 1-5/8" -12 thread

6 in Long Harness

The filter is lowered only 1-1/2"

Step Guard

Holley EFI Fuel Injectors feature a precision lapped disc valve

QA1 63 Series Shock 7" Front 5C/650R 29112BK Aluminum fittings have a o-ringThe 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