The SC3 SmartCarb replaces the stock Keihin Mikuni carburettor.

This isn’t your grandpa’s carburettor. The All-New SmartCarb SC3 brings carburetion firmly into the 21st century. It is a precision air/fuel metering instrument that provides better-than-EFI fuel atomisation, precise mixture control, and automatic air density compensation in a single circuit, externally adjustable, jet-less fuel system.

SC3 Upgrades:

• Ludicrously Simple Design | CNC billet-machined unibody construction
• Patented CloudForge™ Venturi Design | Optimised signal generation and fuel atomisation
• Moisture Management | Improved throttle control in extreme humidity
• Blended Slide Cutaway | Cleaner off-idle throttle response
• O-ring Float Bowl Gasket | Improved sealing and sleeker look
• “Tucked” Fuel Fitting | Improved fuel line routing
• Crisper Clicker Haptics | Improved clicker adjustment feel
• Improved Fuel Rate | 2X dump passages for quicker float bowl fuelling response
• Reduced Part Count | Cost savings passed to our customers

Performance Guarantees

Less Is More

The SC3’s patented CloudForge™ venturi airflow shaping, integrated float bowl venting, and single circuit, metering-rod-only fuelling all work together to provide superior performance and efficiency at every throttle position compared to competing fuel systems. No jets, no secondary circuits, and no compromises.

• 8-10% More HP & Torque | Compared to fully tuned jet/needle carburettors size-for-size
• 25-30% Greater Fuel Economy | Forget the oversized tank or pair one up for ultimate range
• 30-50% Less Emissions Output | 3X EPA certified for on-road emissions
• Incredibly Crisp, Clean Throttle Response | Increased torque/tractability & substantial peak RPM overrev
• Ships Pre-Tuned

Ultimate Simplicity

Everything You Need, Nothing You Don’t

While competing fuel systems continue down the path of ever-increasing complexity by adding power-jets, additional circuits, and adjustment knobs, the SmartCarb SC3 takes a different approach. Our patented single-circuit design makes the SC3 the easiest carburettor on the planet to tune and maintain.

• Tool-Free Tuning in Seconds | SC3 offers the finest adjustment resolution of any carburettor, right at your fingertips
• Set and Forget | Automatic air density compensation for elevation, temperature, and even blow-thru boost
• No Jets or Jetting | Trash the brass and leave jetting behind
• Stop Getting Hosed | Super clean form-factor with integrated float bowl venting – NO dangly hoses
• Less is More | Smallest part count of any carburettor on the market
• Mean AND Green | Zero fuel spillage, even when tipped over

Tuning/Ease of Use

• Easy External Adjustability (no tools required)
• Ambient Air Density Compensation (no tuning required for elevation, temperature, or humidity)
• Accepts all modern stock throttle cables
• Single Circuit Design (no jets, no accelerator pump, no power-jet)
• Set it and forget it!

View all SmartCarb.