What is the purpose of the external bypass tubes on this shock?

The external bypass tubes allow for a more tunable damping curve. They provide additional fluid paths that can be adjusted to control the shock's response at different points in its travel, offering improved performance for specific terrains and driving styles.

Is this shock compatible with custom valving adjustments?

Yes, custom valving options are available for this shock. This allows you to fine-tune the damping characteristics to match your vehicle's setup and your preferred driving experience.

What does it mean that the shock is owner serviceable and rebuildable?

This means you can perform maintenance and repairs on the shock yourself. You can replace seals, oil, and other components to keep the shock performing optimally over its lifespan, rather than needing to replace the entire unit.

FOX Factory Series 2.5 x 16 External Bypass Piggyback Shock - Left

Specifications

Brand: FOX
Part #: 981-25-417-L
UPC: 788000426852

FOX Factory Series 2.5 x 16 External Bypass Piggyback Shock - Left

Name: FOX Factory Series 2.5 x 16 External Bypass Piggyback Shock - Left
Brand: FOX
SKU: fox-fox-factory-series-2-5-x-16-external-bypass-piggyback-shock-left-t14-656040
Price: 1559.95 USD
Availability: BackOrder

$1559.95

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

FOX Factory Series 2.5 x 16 External Bypass Piggyback Shock - Left. Race-proven damping for off-road performance.

Key Features

Fits left side application.
Features a 2.5-inch diameter body with a 16-inch stroke length.
External bypass design with four tubes allows for advanced damping control.
Utilizes JM92 MIL-SPEC oil, specifically developed for the rigors of off-road racing.
Shaft is constructed from 17-4 H900 hard chrome plated stainless steel for strength and durability.
Components are CNC machined from aluminum and feature a black anodized finish.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This is the FOX Factory Series 2.5 x 16 External Bypass Piggyback Shock, specifically the left-side unit. FOX puts a ton of engineering into their race-winning suspension, and this shock is built to handle serious punishment while giving you reliable, consistent performance. Whether you're hitting jumps in the desert or crawling over rocks, this shock is designed to provide the damping control and spring rate you need to keep your vehicle planted and moving forward.

What sets this shock apart is its external bypass design, featuring four tubes that allow for a more refined damping curve. This means you can tune the shock's response to specific terrain and driving styles. The 17-4 H900 hard chrome plated stainless steel shaft is incredibly strong and resistant to wear, while the JM92 MIL-SPEC oil is formulated for the extreme demands of off-road racing. Plus, the entire assembly is protected by a new proprietary Cerakote ceramic coating over a zinc-plated basecoat, offering excellent resistance to corrosion and abrasion. All the CNC-machined aluminum components are black anodized for durability and a clean look.

This shock is also owner serviceable and rebuildable, meaning you can maintain its performance over the long haul. Custom valving options are available if you want to fine-tune the damping even further for your specific setup. This is a serious piece of suspension hardware for those who push their vehicles to the limit.