Fox 3.5 Factory Race 18-Inch External Bypass Piggyback Shock with 3/4-Inch Shaft - Left

FOX devotes countless hours of research and development to design race-winning suspension that withstands incredible punishment and provides consistent performance you can rely on. Regardless of whether you are flying high over the desert or struggling to stick to a rock face on an off-camber climb, our shocks will give you the damping performance, suspension control and proper spring rate to get the job done. Rebuildable and serviceable. Custom valving options available. Uncompromised performance through FOX’s patented internal bypass technology delivers the feel of near-endless suspension travel. Exclusive internal bypass technology allows oil to flow around the piston at some points of the stroke – while creating humongous pressure at other points – supporting the vehicle like no other product can. Floating through terrain is accomplished with FOX’s ride zone – combining a race-developed shock piston, internal bypass and Dual Speed Compression adjustment – allowing fine tuning for weight, terrain and speed. Dominate any terrain with the brute strength of 3- and 2.5-inch aluminum bodies, cactus cooler reservoirs and 7/8” shafts with redundant seals, all proven in the harshest of environments under the toughest of conditions.

• NEW proprietary Cerakote® protective ceramic coating over zinc plated basecoat
• NEW Proprietary Cerakote Protective Ceramic Coating Over Zinc Plated Basecoat
• JM92 MIL-SPEC oil developed specifically for off-road racing
• 17-4 H900 hard chrome plated stainless steel shaft
• Black Anodized CNC Machined Aluminum Components
• Owner serviceable and rebuildable

The Fox 3.5 Factory Race Shock with an 18-inch length and a 3/4-inch shaft is engineered for high-performance off-road racing and extreme terrain. Designed with Fox's proprietary internal bypass technology, this shock provides near-endless suspension travel and exceptional damping control. Its innovative internal bypass system allows oil to flow around the piston at specific points, creating high pressure where needed to support the vehicle's load and deliver smooth, controlled movement. This technology ensures consistent performance whether you're navigating desert dunes or rocky ascents, making it ideal for demanding off-road applications.
The shock features a robust 3- and 2.5-inch aluminum body construction, cactus cooler reservoirs, and redundant seals, all proven to withstand harsh environments and intense conditions. The adjustable Dual Speed Compression (DSC) allows for precise tuning to match terrain, weight, and riding style, offering riders the ability to optimize suspension performance on the fly. Its durable design includes a 17-4 H900 hard chrome plated stainless steel shaft and a proprietary Cerakote® protective ceramic coating over zinc plating, providing enhanced corrosion resistance and longevity.
The Fox Factory Race shock is fully rebuildable and serviceable, with custom valving options available to tailor performance further. Its high-quality construction includes black anodized CNC machined aluminum components and JM92 MIL-SPEC oil formulated specifically for off-road racing, ensuring reliable operation in extreme environments. This suspension component is a critical upgrade for off-road racers and enthusiasts seeking durability, adjustability, and superior handling in challenging terrains.

Features:

• Proprietary internal bypass technology for extended suspension travel and consistent damping

• 18-inch length with 3/4-inch shaft for durability and performance

• Aluminum body with cactus cooler reservoirs for weight savings and thermal management

• Dual Speed Compression adjustment for fine-tuning suspension response

• Hard chrome plated stainless steel shaft for wear resistance

• Cerakote® protective ceramic coating for corrosion resistance

• Rebuildable and serviceable with custom valving options

• Designed with rugged aluminum components and MIL-SPEC oils for extreme conditions

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1