Twin 30mm SC3 SmartCarbs

Name: Twin 30mm SC3 SmartCarbs
SKU: SC3-30-X2
Availability: InStock

Price range: $1,049.00 through $1,229.00

Build Your Own 30mm SmartCarb Twin Kit

All-new Twin 30mm SC3 model SmartCarbs come in a right-hand (RH) and left-hand (LH) set and are designed to replace conventional, spigot mounted carburetors of similar size in twin-cylinder applications, offering unbeatable performance and incredible ease of use. They are a direct fit in applications originally equipped with Keihin PWK 28mm and Mikuni VM or TM series carburetors of similar size. In general we recommend replacing size-for-size.

Choose this product only if you cannot find your application in the Selector Tool drop-downs on the Shop page but are confident in your ability and understanding to adapt it to your particular application or if directed to by a SmartCarb Fuel Systems technician or representative. SmartCarb Fuel Systems makes no guarantees regarding the suitability of this product for use in unknown applications or in those for which it was not specifically designed for. Please review the fitment requirements detailed in the Fitment Information tab below.

The +2 Metering Rods option is recommended for unique applications and adds a one step richer metering rod and a one step leaner metering rod per carburetor to your order relative to the metering rods selected and installed by the technician prior to shipping, based on the application information provided. A technician may reach out for further information prior to shipping.

Filter-side spigot Ring Adapters are press-fit installed prior to shipping and are not removable.

Every SmartCarb ships pre-adjusted specifically for the application for which it is ordered. 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 (if applicable).

Questions about compatibility, sizing, or fitment? Contact Us!

Products shipping internationally may be subject to import duties/taxes.

Filter Side Spigot Diameter

+2 Metering Rods Per SmartCarb

Clear

Year, Make & Model *

Engine/Exhaust Modifications *

Riding style(s) *

Fuel Selection/Oil Ratio (if applicable) *

SKU: SC3-30-X2 Category: Build Your Own

Description

New Unibody Design!

The All-New Twin 30mm SC3 SmartCarb carburetors bring carburetion firmly into the 21st century. They are precision air/fuel metering instruments that provide extremely fine fuel atomization, precise mixture control, and automatic air density compensation in a single circuit, externally adjustable, jet-less design.

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
Mirrored Option | Right Hand (RH) and Left Hand (LH) configurations available
Reduced Part Count | Cost savings passed to our customers

SmartCarbs are proudly designed and manufactured in the USA!

Learn more about How It Works

Performance Guarantees

Less Is More

The SC3’s patented float bowl venting and single circuit, metering-rod-only fueling work together to provide superior performance and efficiency at every throttle position when 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 | SC3 SmartCarbs ship pre-adjusted specifically for your application

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

30mm SC3 model SmartCarbs accept any throttle cables designed for use with Keihin PWK 28mm and Mikuni VM or TM series carburetors of similar size, whether slip-end or thread-end. Slip-end cables may require moving the throttle cable guide from the stock carburetor to the SmartCarb cap (if possible). The SmartCarb cap or top cover uses industry standard M6x.75 metric threads for cable attachment. Standard throttle cable guides are included with your purchase. A variety of angled throttle cable guides are available to order here.

View the 30mm SC3 SmartCarb Dimensional Guide below to assess fitment potential. A, B, C, D, and body width dimensions:

A (engine-side spigot outer diameter) 35mm
B (length end-to-end) 82.5mm
C (total height, including clicker adjuster) 152.4mm
D (filter-side spigot outer diameter) 50mm (2 inch), 60.3mm (2.375 inch Ring Adapter), or 63.5mm (2.5 inch Ring Adapter)
Body width – 64mm

NEW: Purchase 3D printed solid models or Download the 3D print-ready .STL files below for mocking up fitment.

30mm SC3 SmartCarbs are spigot mounted and require installation and isolation within rubber manifolds. No hard contact or excessive vibration transfer are permitted. Hard contact between the carb body and the engine case, frame, or shock spring or excessive vibration during operation may cause fuel frothing/aeration resulting in potential engine damage or unsafe operation of the application.

A minimum distance between intake centerlines of 70mm is required for mounting Twin 30mm SC3 SmartCarbs.

SmartCarbs may be tilted up to 15 degrees either side for fitment clearance and up to 30 degrees forward or semi down-draft, but no further.

View the Quick Start Guide (included with your purchase).

Twin 30mm SC3 SmartCarbs

Build Your Own 30mm SmartCarb Twin Kit

Description

New Unibody Design!

Performance Guarantees

Less Is More

Ultimate Simplicity

Everything You Need, Nothing You Don’t

Fitment Information

Reviews

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