Fox Racing Shocks 981-25-405-L Factory Race External Bypass Piggyback Shock - 2.5x16 3-Tube Left

The Fox Racing Shocks 981-25-405-L is a Factory Race Series 2.5-inch diameter, 16-inch external bypass piggyback shock absorber (left side) engineered for serious off-road racing and high-performance applications. Featuring a 3-tube external bypass design, this shock allows precise, independent control of compression damping at multiple points in the stroke — delivering superior wheel control and ride consistency over rough, high-speed terrain.

The 2.5-inch body diameter provides increased oil and gas volume compared to standard shocks, which translates to improved heat dissipation and fade resistance during extended off-road use. The integrated piggyback reservoir further expands fluid and nitrogen gas capacity, maintaining consistent damping performance even under the most demanding race conditions.

Key Features:

• External bypass design with 3-tube configuration for multi-zone compression tuning
• 2.5-inch shock body diameter for maximum fluid volume and heat resistance
• 16-inch travel for long-travel suspension setups
• Piggyback reservoir increases oil and nitrogen capacity for fade-free performance
• Rebuildable and fully serviceable for long-term use and race-season maintenance
• Custom valving options available to tailor damping to specific terrain and driver preference
• Left-side specific fitment for proper bypass tube orientation
• Designed and built to Fox Factory Race Series standards

As a rebuildable shock, the 981-25-405-L is built for racers and enthusiasts who demand long-term performance and the ability to re-valve and service their suspension between events. Custom valving is available through Fox's race support program, allowing this shock to be precisely tuned to your vehicle, weight, and racing conditions.