QA1 5Q934-12 Twin Tube Large Body Circle Track Shock Steel 4C/12R

The QA1 5Q934-12 is a large body twin-tube steel shock absorber designed for circle track racing and high-performance applications. Formerly part of the 51 and 53 series line, the 5Q series delivers professional-grade performance with race-proven durability and exceptional rebuildability.

Key Features:

• Large body steel construction with black zinc coating for consistent finish and tight sealing
• Two-piece body design simplifies disassembly and reassembly for quick rebuilds
• Laser-engraved, black-anodized closure nut makes serial numbers and valving specifications easy to read at the track or in the shop
• Upgraded seal kit minimizes leaks, especially in high-rebound applications
• Compression tube uses slip fit design to simplify the rebuild process
• Gland features relief cuts and hyper screw port for easy filling and bleeding during assembly
• Scalloped base loop increases clearances in tight areas like upper control arms and shock mounts
• High-quality raw aluminum pistons minimize variations found in anodized parts
• Valving can be customized with bleed shims or drilled bleeds for maximum tunability
• Can be used in coil-over configurations with appropriate kits (sold separately)

Built with the racer in mind, 5Q series shocks can be re-valved and rebuilt in minutes using basic tools. This stock mount configuration is designed for GM mid-size front applications with short length specifications. The 4C/12R valving provides balanced compression and rebound control for competitive circle track racing. All QA1 shocks are made in the USA and 100% dyno tested for consistent performance.