Also available in: 3.000" Inlet/Outlet (10030) | Fabricator 6-Pack (610025)
HIGH-FLOW EMISSIONS REDUCTION FOR OFF-ROAD, RACE, AND PRE-1973 VEHICLES — G-SPORT OBD2 NON-EPA
NOTE: These Non-EPA G-Sport catalytic converters carry a lighter loaded catalyst — they reduce all regulated emissions to a lesser degree than the EPA-compliant line and are not EPA compliant. The elimination of a check engine light cannot be assured. They are best suited to applications where the vehicle never came with a catalytic converter from the OEM (vehicle years 1973 and older) and to off-road use such as trail or race.
The G-Sport OBD2 Non-EPA Catalytic Converter (10025) brings the same construction as the EPA-compliant line — GESi's 300 CPSI S-Wound metallic substrate, furnace-brazed and Double-Lock canned in 300 Series stainless steel — at a lighter catalyst loading and a lower price, for 2.500" exhaust systems on builds where emissions compliance is not required but running fully catless is not wanted: tamed exhaust smell, reduced emissions, and an OEM-style appearance.
FEATURES
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300 CPSI S-Wound metallic substrate — thinner cell walls than ceramic mean more open flow area per cell
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Lighter catalyst loading — meaningful emissions and odor reduction at a motorsport-friendly price
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Nickel-lined, furnace-brazed core with Double-Lock canning — the substrate cannot telescope or fail under boost
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300 Series stainless steel construction inside and out; withstands spikes up to 1,600°F
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Not EPA compliant — for pre-1973 and off-road/competition use only; CEL elimination not assured
SPECIFICATIONS
- Inlet/Outlet: 2.500"
- Body Diameter: 4.000" OD
- Overall Length: 7.000" (±0.125")
- Cell Count: 300 CPSI
- HP Rating: N/A (application-rated, not horsepower-tiered)
- Substrate: S-Wound metallic, furnace-brazed
- Material: 300 Series stainless steel
- EPA Compliant: No — off-road, race, and pre-1973 applications only
- Weight: 2.35 lbs
- Connection: Welding Required
APPLICATIONS & FITMENT
Built for race and trail vehicles, kit cars, and street vehicles from 1973 and older that never came with a factory converter — anywhere you want exhaust cleanup without emissions paperwork. If your vehicle needs to pass emissions or keep a check engine light off, use the EPA-compliant line instead: Gen1 HO 2.500" (50022) for 1996–2016 vehicles or Gen2 HO 2.500" (50225) for 2017 and newer.
For the full selection guide, see Understanding the G-Sport Catalytic Converter Lineup and our G-Sport FAQ.
INSTALLATION NOTES
This is a weld-in converter for 2.500" exhaust tubing. Install with leak-free joints and adequate clearance from wiring and heat-sensitive components. Full best practices, common mistakes, and a pre-flight checklist are in our G-Sport Installation Guidelines.
Not sure whether a Non-EPA or EPA-compliant converter fits your build? Email us at support@aceraceparts.com with your platform and how the vehicle is used and we will point you to the right part.
