FL250 Smart Carb SC3 Carburetor(26/28mm)
Important Ordering & Fitment Notes:
- Custom Build Lead Time: Each SmartCarb is precision-built and pre-calibrated for your specific application, typically shipping within 1 to 2 weeks from order placement.
- FL250 Fitment & Custom Adaptation: Because the FL250 has a specialized intake tract, direct bolt-on airbox adapter boots are not currently available. Installing this carburetor on an FL250 requires custom intake/elbow adaptation by the installer. We do offer our FL250 Stainless High Flow Air Filter Bracket and matching K&N Air Filter to build out an open-element setup.
- FL350 & FL400 Owners: Looking for a 36mm, 38mm, or 40mm setup? Please see our dedicated listing here: FL350 / FL400 SmartCarb SC3 Carburetor.
- Fuel Delivery Notification: If your machine runs a gravity-fed tank or an electric fuel pump, you must contact us via our Contact Form immediately after placing your order so the needle and seat assembly can be calibrated specifically for your fuel delivery pressure.
- Metering Rod Tuning: For a quick visual walkthrough on servicing or dialing in your internal metering rod, watch this Metering Rod Instructional Video.
- Pulse Line Check Valve: The factory pulse line "T" check valve is not required when running this carburetor, though it will function normally if left installed on your fuel delivery line.
21st-Century Fuel Delivery: The Jetless SmartCarb SC3 for FL250
Eliminate jetting frustration once and for all. If you are tired of disassembling your carburetor at the staging area just because the weather cooled off, or constantly worrying about lean seizures when trail elevations change, the SmartCarb SC3 brings your vintage Honda Odyssey FL250 into the modern era. Utilizing a patented, single-circuit jetless fuel delivery system, the SmartCarb automatically compensates for changing air density, ambient temperature, and elevation—maintaining ideal air/fuel ratios without swapping brass jets.
Every unit ships pre-jetted and pre-calibrated with baseline settings tailored directly to your engine specs. Experience crisp bottom-end snap, broad midrange torque, cleaner combustion, and genuine set-it-and-forget-it reliability on every ride.
FL250 Carburetor Sizing Recommendations
- 26mm SC3: Ideal for stock displacement Honda Odyssey FL250 engines prioritizing maximum low-end air velocity, crisp throttle response, and smooth low-speed trail manners.
- 28mm SC3: Recommended for modified FL250 engines, including ported cylinders, aftermarket exhaust pipes, high-compression heads, or riders seeking enhanced mid-to-top RPM pulling power.
FL250 High-Flow Air Filtration Upgrades
While custom coupler adaptation is required to bridge the SC3 to the intake tract on an FL250, you can completely modernize your air filtration system and ditch the restrictive OEM airbox with our matching high-flow bracket components:
- Stainless Air Filter Bracket: Our FL250 Stainless Steel High Flow Air Filter Bracket bolts directly into the chassis, removing the bulky stock plastic airbox to dramatically enhance engine bay airflow and simplify routine maintenance.
- High-Performance Filter: Complete the open-element setup with the clamp-on FL250 K&N High-Performance Air Filter for maximum airflow and proven off-road dust filtration.
Key Performance Benefits & Features:
- Increased Horsepower: Patented flat-ground metering rod atomizes fuel into ultra-fine droplets, delivering up to a 10% gain in usable power output.
- Unmatched Fuel Economy: Produces 25% to 30% better fuel mileage than conventional slide carburetors, extending your tank range on remote trails.
- Automatic Ambient Density Compensation: Altitude, barometric pressure, and ambient temperature shifts are continually compensated for automatically.
- Tool-Less External Tuning: Dial in your mixture in seconds using the external top-mounted clicker dial—no tools, no disassembly, no spilled fuel.
- Sealed, Internally Vented Float Bowl: Zero raw fuel overflow or spillage over steep dunes, rough whoops, or off-camber riding angles.
- Billet CNC Craftsmanship: 100% precision CNC-machined in the USA from premium billet aircraft aluminum.
- Cleaner Running: Reduces unburned hydrocarbon emissions by 30% to 50% for cleaner exhaust and virtually zero plug fouling.
Optional Throttle Position Sensor (TPS): A factory-integrated TPS option is available for advanced custom engine configurations utilizing 3D programmable ignition curves, electronic power valves, or supplemental data logging.
| Origin | Aftermarket |
|---|---|
| Condition | New |
| ATV Make | Honda |
| ATV Model | FL250 - Yellow, FL250 - Red, Challenger |
| Manufacturer | SmartCarb |
| Height | 12 |
| Width | 12 |
| Depth | 12 |









