NEW 26mm OR 28mm SC3 SmartCarb

The new 26mm and 28mm SC3 SmartCarbs are designed to replace traditional spigot-mount top-pull carburetors in 2-stroke setups. They’re a direct fit for most intake manifolds and air boxes that use Keihin PWK 28mm or Mikuni VM/TMX 24–26mm carbs. These SmartCarbs feature a no-jet design, meaning all tuning adjustments are made right from the top of the carb — simple, quick, and tool-free. Installation takes about ten minutes.

Details: The SC3 SmartCarb features a single-piece CNC billet unibody construction with an O-ring float bowl gasket for improved sealing and a clean, sleek appearance. The fuel fitting is tucked in for tighter routing, and the updated clicker system gives a more precise, tactile feel during tuning. Fuel flow has been improved with dual dump passages for faster response, and mirrored configurations (right-hand or left-hand) are available. Reduced part count keeps costs lower without sacrificing quality.

Performance: Expect up to 10% more power, 25–30% better fuel economy, and crisp, linear throttle response from bottom to top. The SmartCarb delivers consistent air/fuel ratios in any condition with automatic air density compensation, no jets to swap, and zero external venting. The sealed system reduces emissions by 30–50% and eliminates fuel spillage. Each unit is precision-machined and proudly made in the USA.

Tuning: Adjustments can be made by hand in seconds — no tools required. The single-circuit design makes it easy to set up, ride, and forget. Works with all modern stock throttle cables.

Fitment: Fits most 2-stroke scooters and motorcycles that accept PWK or Mikuni-style carburetors. Available in multiple color options and both right-hand and left-hand configurations.

Build Note: Each carb is built to your specific setup. When ordering, please include your engine displacement (cc), motor type, estimated horsepower, and maximum RPM in the order notes. Orders typically ship within 2–6 weeks.

Note: Don’t forget to grab a throttle cable compatible with PWK, OKO, or Polini CP-style carbs for proper fitment.