APPLICATION GUIDE
Travel Extended Compressed Valving Shaft Note Part Number
Factory
4.4 Factory Series Bypass Piggyback  Bypass Shock

4.4 Factory Series Bypass Piggyback   Bypass Shock

Overview
click to open

FOX bypass shocks continue to dominate offroad racing with their unmatched performance and ease of adjustability. Combining the finest materials available with continuous, real race testing delivers the unrivaled performance that FOX is known for. The position-sensitive external bypass design allows for each stage of the shocks compression and rebound stroke to be adjusted independently from the others without affecting the other stages. FOX offers custom bypass tube layouts to maximize your suspensions performance while adhering to the vehicle's space restrictions.

Specifications
click to close

Body

  • Smooth-bore, clear coated, zinc plated, honed seamless alloy bodies

Components

  • Black anodized 6061-T6 billet aluminum

Shaft

  • 1.25" hard chrome plated stainless steel 17-4 H900

Piston

  • Race-developed high-flow piston design

Valving

  • Proprietary deburred valve shims

Seals

  • Redundant sealing pack system main seal, wiper seal, scraper seal
  • High temperature Viton seals

Oil

  • FOX formulated for ultimate performance at variable temperatures

Reservoir

  • Piggyback
  • Optional remote reservoir

Mounting

  • Lined, heat-treated, alloy steel spherical bearings 5/8" bolt x 1 1/2" wide
Adjustments
click to close
  • Compression bypass adjusters
  • Rebound bypass adjusters
  • Free bleed bypass adjuster
  • Nitrogen pressure
  • Compression valving
  • Rebound valving

Register Your Product

I'm new
Create account
I have an account

Remember me   I forgot my password »
Log in

Connect

Facebook Instagram Facebook Facebook
FOX 40 Years
FOX 40 Years Bike Moto ATV Snowmobile UTV Truck Offroad
Worldwide   United States   Worldwide
EVOL Air Chamber
Kashima Coat
DSC
Rebound Damping
Position-Sensitive Damping
FLOAT Air Spring
Spring Preload
Race Reports
Articles
Events
BOC
F.A.S.T.
DSC
MX Compression Adjuster
Low Speed Compression
Spring Preload
Rebound Damping
Anti-Wallow Control (AWC)
Air Volume Adjustment (AVA)
By Type
Smooth Body
Coil-over
Bump Stop
Air Shock
Bypass
By Series
Factory
Performance
Race Program
Contingency
Apply
Events
Dual Speed Compression
Internal Bypass
FOX Ice Scraper Technology (FIST)
EVOL Air Chamber
Kashima Coat
DSC
Rebound Damping
Spring Preload
FLOAT Air Spring
By Type
Aluminum
Steel
 
By Class
Modified
Late Model
Sprint Car
By Type
Smooth Body
Coil-over
Bypass
Steering Stabilizer
Bump Stop
By Series
Factory
Performance
Adventure
 
 
By Make
Chevrolet
Dodge
Ford
GMC
Hummer
 
Isuzu
Jeep
Land Rover
Nissan
Toyota
Dual Speed Compression
Internal Bypass
Quick Adjust Bypass (QAB)
DSC
Kashima Coat
Bottom-Out Control
Internal Bypass
Rebound Damping
LSC
Conflict Minerals Policy
California Transparency in Supply Chains Act
All Races and Events
ATV Races and Events
Rip Off the Strip
United States
Worldwide
Press Releases
Events & Presentations
Corporate Governance
Financial Information
Stock Information
Investor FAQs
Contact Us