TRS One 300 28mm Smartcarb SC3 carburetor

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):

The SC3 SmartCarb replaces the stock TRS carburetor in 250, 280, and 300cc trials bikes.

The SmartCarb SC3 is precision air/fuel metering instrument that provides extremely fine fuel atomization, 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
• 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 fueling response
• Reduced Part Count | Cost savings passed to our customers (-$100)

SmartCarbs are proudly designed and manufactured in the USA!

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 Honda CR125

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 replaces the stock 28mm Keihin PWK in TRS trials bikes and it accepts the stock throttle cable. It does NOT fit into TRS trials bikes that were factory equipped with the Dellorto PHBL26 carburetor.