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Please Select From The Options Below.....

Platinum and Works Pipes
  • The winingest aftermarket pipe in the motocross world
  • Intense testing, and riding ensures performance that works from every pipe
  • Knowledge gained from the top levels of racing, computer-aided design for more exacting specs, plus a commitment to excellence has made Pro Circuit the dominant pipe at all levels of competitions
  • Two styles available: Platinum pipes have a nickel-plated finish, while Works pipes have a bare metal finish; performance, fit and all other features are exactly the same

Platinum Pipe


Works Pipe



R304 Factory Sound Silencers

R304 Shorty Silencers


  • Add power and a works-like exhaust note
  • Factory Sound silencers feature aluminum body construction
  • Stainless steel end caps and tubing; resist rust
  • Rebuildable

(Note: Silencer PART #'s ending with an "E" are the new Euro end-cap style)

  • Used by practically every PC-equipped motocross professional on the podium today
  • Race-only silencer features a short body with reduced packing volume for optimum exhaust flow
  • Stainless-steel end caps and intake tube, an extruded aluminum body with brushed finish and light weight
  • High-strength aluminum rivets and steel Allen head screws on one end for easy disassembly and rebuilding

(Note: Silencer PART #'s ending with an "E" are the new Euro end-cap style)

Spark Arrestor Silencers


  • Quiet, U.S. Forest Service approved
  • No power loss
  • Aluminum housing
  • Clog-free design; maintenance free

2-Stroke Application Guides - Pipes & Silencers:


T-4 Four Stroke Silencers and Systems

  • Improved power delivery and exhaust note
  • Tuneable end caps allow fine-tuning of power delivery for different types of riding and terrain
  • Top-quality stainless steel and aluminum construction eliminates rust problems
  • Machined aluminum end caps
  • silencers include spark arrestors that can be removed for closed-course racing; silencer is completely rebuildable
  • T-4 silencers sold with Pro Circuit header pipes for most models; silencers for Honda XR400R/CRF450R/XR600R/XR650L and KTM 400/520 use stock head pipes

4-Stroke Application Guides - Silencers and Systems:




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