Fox Racing Shocks 981-30-420-L Factory Race 3.0x18 External Bypass 4-Tube Remote Reservoir Shock Left

The Fox Racing Shocks 981-30-420-L is a Factory Race Series 3.0" external bypass remote reservoir shock absorber featuring an 18" stroke and a four-tube bypass configuration. Designed for serious off-road racing and high-performance applications, this left-side shock delivers position-sensitive damping control through externally adjustable bypass tubes, giving drivers precise tuning capability for compression and rebound characteristics at specific points throughout the suspension travel.

Fox's 3.0 Factory Race external bypass platform is built around a large-diameter, hard-anodized aluminum body that dissipates heat during sustained high-speed desert running or rock crawling. The remote reservoir extends fluid capacity and helps maintain consistent damping performance even under extreme thermal load. The four-tube bypass layout provides increased tuning resolution compared to three-tube configurations, allowing finer calibration of the shock's behavior across the full range of suspension travel.

Key Features:

• 3.0" body diameter with large-bore aluminum construction for maximum heat dissipation
• 18" stroke for extended suspension travel in race or custom applications
• 4-tube external bypass configuration for precise, position-sensitive damping control
• Revised Gen 2 clicker adjusters with black anodized housings and color-coded seals for compression, rebound, and gold valves
• Dual-coated body finish — proprietary FOX Grey Cerakote® ceramic coating over a zinc-plated basecoat for superior corrosion resistance
• Remote reservoir with black anodized billet aluminum clamp for increased fluid volume and thermal management
• Fully rebuildable and serviceable — supports custom valving options for application-specific tuning
• Left-side orientation — note that left and right shocks are mirrored from each other
• Includes all necessary hardware: washers, bushings, and nuts
• Backed by Fox's limited one-year warranty against defects and premature failure

The Fox Factory Race 3.0 External Bypass shock is the choice of professional off-road racers competing in desert, short course, and ultra-four disciplines worldwide. Its fully rebuildable design and support for custom valving make it equally at home in purpose-built race vehicles and high-end custom builds where long-term performance and serviceability are critical.