Product Summary

Universal Fit, 4.50" Tube Length, Steel, Natural

  • High-quality mild steel
  • Exhaust reducer to repair or build your own exhaust system
  • The swedge for the reduction occurs midway at 2-1/4"
  • 4-1/2" overall length
  • 3" Inside diameter big end, 2.50" outside diameter small end

Key Specs

MFG. Part #9172530
BrandSpeedway Motors

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Mild steel exhaust reducer to repair or build your own exhaust system. The swedge for the reduction occurs midway at 2-1/4”.

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.


MFG. Part #9172530
BrandSpeedway Motors
Tube Length4.50"
Inside Diameter Big End3.00"
Outside Diameter Small End2.50"
Material TypeSteel
Sold in QuantityEach
NotesExpanded length is 1.88"