Click here: Current Sales, Coupons & Promotions

FOX Factory Race 3.5 X 18.0 External Bypass (5 Tube, 3/4") Piggyback Shock - Driver Side
FOX Factory Race 3.5 X 18.0 External Bypass (5 Tube, 3/4") Piggyback Shock - Driver Side

FOX Factory Race 3.5 X 18.0 External Bypass (5 Tube, 3/4") Piggyback Shock

Regular price
$2,336.95
Sale price
$2,336.95

Free Shipping - Lower 48 US States

In Northern California? Get this professionally set up & installed!

Push your off-road limits with the FOX Factory Race 3.5 External Bypass Shock—the gold standard in elite desert racing suspension. Designed with the same championship-winning tech trusted by top-tier Trophy Trucks, this shock delivers precision, strength, and adjustability like no other. When performance, control, and durability matter most, FOX delivers.

Fitment Information

  • Universal

      Specs & Features

      • Sold individually
      • Type: External Bypass Shock, Piggyback Reservoir
      • Body Diameter: 3.5”
      • Travel: 18.0”
      • Bypass Tubes: 5
      • Shaft Size: 1” (17-4 H900 Hard Chrome Plated Stainless)
      • Mounting: Eyelet Top & Bottom (5/8 x 1-1/2)
      • Reservoir Dimensions: 3.00 x 16.00
      • Finish: FOX Grey Cerakote
      • Valving: 807-24-701 (Application Specific)
      • Adjusters: Gen 3 External Bypass Clicker + DSC
      • Massive 3.5" CNC-Machined 6061-T6 Aluminum Body – Lightweight and corrosion-resistant for relentless off-road punishment.
      • Hard-Anodized Finish – Tougher than nails and built to defy the harshest environments.
      • 5-Tube External Bypass System – Tuned to perfection for buttery smooth travel and forceful bottom-out control.
      • Remote Piggyback Reservoir with Fins – Cools like a boss for consistent damping even in desert heat.
      • High-Flow Piston Design – Developed from race DNA to deliver ultra-responsive compression and rebound.
      • 17-4 H900 Stainless Steel Shaft – Chrome-plated, heat-treated, and ready to take abuse.
      • Dual Speed Compression (DSC) Adjusters – Fine-tune your ride on the fly for ultimate terrain adaptability.
      • Multi-Layer Seal System – Leak-proof performance in the gnarliest off-road conditions.
      • Application-Specific Valving – Custom-calibrated to your vehicle's demands—no compromises.
      • FOX Cerakote Grey Finish – Sleek, rugged, and ready to turn heads and conquer trails.

      Product Description

      Dominate any terrain with the FOX Factory Race 3.5 x 18.0 External Bypass Shock—precision-engineered for high-performance off-road racing. With its massive 3.5” hard-anodized aluminum body, 5-tube external bypass system, and heat-dissipating finned piggyback reservoir, this shock delivers elite damping control and next-level durability.

      Race-proven and packed with premium features—like Dual Speed Compression (DSC) adjusters, a hard chrome-plated 17-4 H900 stainless shaft, and a multilayer seal pack—this shock offers the perfect balance of plush ride comfort and bottom-out resistance. Application-specific valving, Cerakote protection, and high-flow piston tech make it a must-have for desert runners, rock crawlers, and long-travel beasts.

      Whether you're tackling Baja or blasting trails, trust FOX’s 30+ years of off-road dominance to elevate your ride quality and suspension control.

      Redline360 sells only genuine and authentic FOX products.

      FOX Brand Logo

      Prop 65 Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


      More in this category
      FOX Shocks
    • Category: Fox Racing
    • Category: Suspension Parts & Upgrades
    • Brand: FOX

      Reviews on this product


      Ordering from Redline360
      Redline360 is an Authorized Dealer so we only sell authentic and genuine parts and accessories.

      Order updates, tracking and info
      Our goal is your complete satisfaction. Upon ordering, you will receive an email confirmation of your order along with your invoice. You will be able to log into our website 24/7 to check on your order at any time. Your order is processed Monday through Friday from 8am to 6pm PST as soon as it is placed. Once your order ships, we will email you a tracking number so you can track your package.

      Protect your purchase
      Redline360 offers our customers piece of mind! We have partned with Extend to offer you Extend Product Protection and Extend Shipping Protection. Read about each protection that Extend offers to Redline360 customers!

      Multiple distribution points ready to serve you!
      We ship from multiple locations around the United States so you receive your part as quick as possible. Not every warehouse stocks all the same parts, so the closest warehouse to you that has the part in stock is where your order will ship from. We ship from California, Nevada, Indiana, Michigan, Florida, Texas and Pennsylvania.

      Secure Ordering
      We take security seriously! We are never exposed to your credit card information, and it's never stored. Credit card transactions go through the credit card processor directly. We also offer various other payment methods such as PayPal, Affirm Financing (Pay over time), Amazon Pay, Apple Pay and more!

      Any non CARB compliant items can not ship California. We will notify you if we have to cancel your order.

      Some products may be subject to local rules, laws and regulations in certain areas. Always check your local laws to determine legal restrictions. We are not responsible if you buy a product that is not legal in your area.

      For items that have free shipping, free shipping only applies to the lower 48 states.

      Questions? Contact us.

      Actual item may vary from picture