36, 38, and 40mm SC2 SmartCarbs are designed to replace conventional carburetors in 2-stroke applications from 125cc up to 500cc or more. They are a direct fit in applications originally equipped with Keihin PE, PJ, PWK and Mikuni VM and TM series carburetors of similar sizes. For TM motorcycles, the 36mm carb is recommended for 125/144cc machines, while the 38mm carb is recommended for 250/300cc 2T machines.
Every SmartCarb ships pre-tuned with baseline settings specific to the application for which it is ordered. Questions about sizing, fitment, or compatibility? Contact Us!
New orders generally ship within 2 weeks from the order date. For our international customers, please note that any applicable import duties or taxes are the purchaser’s responsibility.
Performance Guarantees
- Ride Faster | 10% more power
- Ride Farther | 25-30% greater fuel economy
- Crisp, clean, responsive throttle inputs bottom to top!
Tuning/Ease of Use
- Make adjustments trail/track-side by hand, in seconds (no tools required)
- Complete air density compensation (consistent air/fuel ratios at any elevation or temperature)
- Accepts all modern stock throttle cables
- Single circuit design (NO Jets!)
- Set it and forget it!
Other Features
- Zero fuel spillage (internally vented, sealed system)
- TPS plug-and-play (optional add-on or as a kit)
- Reduced emissions (30-50% reduction)
- CNC billet construction
- Designed and manufactured in the USA
NOTE: Throttle Position Sensor (TPS) required for:
- Applications using 3D ignition mapping requiring TPS input (later year YZ250s, KX250s, RM250s, and the new 2022 YZ125s)
- Applications using TPS input for oil injection (Betas) or for servo controlled power valves (later year CR250s)
- Applications using aftermarket ECUs with advanced mapping features requiring TPS input (PowerCDI)
