Smartcarb SC3 carburetor for 1985-2007 Kawasaki KX250 & 1990-1992 KDX250

Phoenix Motos are Proud to be SmartCarb dealers!

SmartCarbs are configured to order & are shipped from America - don't worry we take care of the shippig cost from USA & import duty etc.

We estimate 2-3 week delivery from the date of placing your order with us.

To help with your order please message us to confirm the following details:-

Year of bike:

Engine/Exhaust Modifications:

Riding Style (MX, Enduro, trail etc..):

Fuel Octane & Mix Ratio used(if applicable):

Keep the good times rolling!

The all-new 38mm SC3 model SmartCarb replaces the stock carburetor in Kawasaki KX250 and older KDX250 dirt bikes, offering holeshot-winning performance, corner-ripping torque, and tool-free tuning.

MagVolt® Throttle Position Sensor option recommended for later year KX250s equipped from the factory with TPS for 3D ignition mapping.

Every SmartCarb ships pre-adjusted specifically for your bike setup. Please provide information in the forms below about any engine/exhaust modifications, how you ride (riding style), and what fuel selection and oil premix ratio you use.

Description

What’s New!

The SC3 SmartCarb replaces the stock Kawasaki KX250 & KDX250 carburetor.

This isn’t your grandpa’s carburetor. 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 atomization, precise mixture control, and automatic air density compensation in a single circuit, externally adjustable, jet-less fuel system.

SC3 Upgrades:

• Patented CloudForge™ Venturi Design | Optimized signal generation and fuel atomization
• Moisture Management | Improved throttle control in extreme humidity
• Larger Vent Scoop | Faster float bowl venting/fluid communication
• Blended Slide Cutaway | Cleaner off-idle throttle response
• O-ring Float Bowl Gasket | Improved sealing and sleeker look
• Doubled Fuel Rate | 2X fill passages for quicker float bowl fueling response
• “Tucked” Fuel Fitting | Improved fuel line routing
• Complete SC3 Design Overhaul | Better fitment with smaller form-factor
• Reduced Part Count | Cost savings passed to our customers (-$100)
• Lighter Weight | 12% reduction

SmartCarbs are proudly designed and manufactured in the USA!

Performance Guarantees

Less Is More

The SC3’s patented CloudForge™ venturi airflow shaping, integrated float bowl venting, and single circuit, metering-rod-only fueling 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 carburetors size-for-size
• 25-30% Greater Fuel Economy | Forget the oversized tank or pair one up for ultimate range
• 30-50% Less Emissions Outputs | 3X EPA certified for on-road emissions
• Incredibly Crisp, Clean Throttle Response | Increased torque/tractability & substantial peak RPM overrev
• Ships Pre-Tuned | Every SC3 SmartCarb ships pre-adjusted specifically for your Kawasaki KX250 & KDX250

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 carburetor on the planet to tune and maintain.

• Tool-Free Tuning in Seconds | SC3 offers the finest adjustment resolution of any carburetor, 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 carburetor on the market
• Mean AND Green | Zero fuel spillage, even when tipped over

Fitment Information

This SmartCarb accepts the stock throttle cable and equips the following 250cc Kawasaki 2-stroke dirt bikes:

• 1985-2007 KX250
• 1990-1992 KDX250

An airboot trim may be required for proper SmartCarb float bowl venting.

The MagVolt® TPS system is plug-and-play and clips into the same connector as the stock TPS. No adjustments or calibrations required. Short throw throttle cams or tamers are not recommended for TPS equipped bikes.