Fox 3.5 Factory Series Bypass Piggyback for RST18


The price shown here is before the upgrades below. 

  • FOX 3.5 x 16″ 5 Tube Bypass Shock
  • Compatible with our RST18 bypass rack
  • Cerakoted Grey for corrosion resistance


Body Smooth bore and honed seamless steel
Body Plating Zinc plated for a long-lasting finish
Components Black anodized, CNC machined 7075 billet aluminum
Piston Stainless steel for improved performance at high temperatures*
Valving Tunable, velocity sensitive deburred valve shims
Seals High-temp Viton® redundant sealing pack system with main seal, wiper seal and scraper seal*
Oil JM92 Advanced Suspension Fluid for improved performance at variable temperatures
Shafts 17-4 H900 hard chrome plated stainless steel
Bearing Spherical, PFTE-lined, heat-treated alloy steel
  • Rotating Body Cap
  • Compression bypass adjusters
  • Rebound bypass adjusters
  • Free bleed bypass adjuster
  • Compression valving
  • Rebound valving


Dimensions 35 × 19 × 10 in


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