The SmartCarb provides increased horsepower and torque throughout the entire throttle range. You can expect more power delivered more linearly due to the SmartCarb's single circuit fueling and variable venturi throttle rate. Properly tuned, the bottom end throttling is best described as being crisp, clean, and responsive with a smooth, linear transition through the mid into a forceful top end, extending the power-band a further 500-600 useable RPMs. We guarantee 10% more peak power compared to properly jetted stock carburetors.

SmartCarb users should expect a 25-30% increase in fuel economy compared to the stock fuel system for the same conditions (riding style, speed, terrain, elevation, etc). Oil injected Beta customers can expect even more.

See real world testimony by viewing Steps To Podium's YouTube video: The ultimate SmartCarb Mileage Test.

Tune your SmartCarb track or trail-side in seconds. All adjustments are made externally, by hand, and without tools.

See the SmartCarb Tuning Mini Guide for more information.

The SmartCarb's patented, integrated float bowl venting feature allows it to automatically compensate for much wider air density factors related to elevation and temperature changes compared to other carburetors. No adjustments are required for moderate elevation or temperature changes. Extreme changes (multiple thousands of feet elevation change and/or large temperature swings) may require a slight adjustment.

Fuel composition can vary by region and may require slight adjustments for optimal performance.

Power delivery characteristics can be modified by adjusting the clicker for optimal power delivery in varying terrain (slick, dry, rocky, etc).

SmartCarbs are CNC machined out of high grade aluminum with hard coated throttle slides to resist wear. Unlike conventional carburetors, there are no jets or small orifices to clog or gel up. We recommend a thorough cleaning annually and a rebuild with Rebuild Kit containing all service parts every 2-3 years.

Consistent cleaning and replacement of service parts will keep your SmartCarb performing excellently for years.

Yes, after-sale support is one of our biggest values. We pride ourselves in our timely, personalized customer support both before and after sale. As enthusiasts who share the same passion for motorsport performance as our customers, we guide and educate anyone interested in what our technology has to offer. We are redefining what carburetion can be and recognize that education is key to ensuring that every SmartCarb we sell meets its full potential and its owners expectations.

Current model SmartCarbs are designed to replace Keihin PE, PJ, PWK and Mikuni VM and TM series carburetors of similar sizes. Applications for which we have confirmed fitment and baseline settings for are selectable in the Get Equipped tool on the Shop page. If you don't see your application in the Get Equipped tool and have questions about fitment, installation, or compatibility, please contact us.

SmartCarbs are currently offered with single cable, top-pull throttling in 26, 28, 36, 38, and 40mm sizes. More sizes will become available over time.

We are still in development of dual cable, side-pull throttled SmartCarbs for direct fitment into modern 4-stroke applications. The top-pull throttled SmartCarbs currently available may be used in 4-stroke applications, however we ask that you contact us for more specific information and help regarding potential fitment issues. In general we do not advise using top-pull, single cable throttling in 4-stroke applications larger than 450cc. Larger displacement 4-strokes are prone to throttle slide "float," making manual (cable) throttle return a safety requirement.

Looking to equip your scooter, junior dragster, shifter kart, paramotor, snowmobile, or something else? We are happy to work out the details with you. Please contact us directly so that we can advise you on SmartCarb sizing, installation, and tuning for your unique application.

Yes, our proprietary MagVolt® Throttle Position Sensor (TPS) is an available add-on to any 36, 38, and 40mm size SC2 model SmartCarb. MagVolt® TPS is recommended for applications using 3D ignition mapping, Beta 2-stroke motorcycles with oil injection, and applications using aftermarket ECUs with advanced mapping features.

Yes, so long as the size is appropriate for the application. Many owners choose to take their SmartCarbs from one application to another over time or when upgrading. Please contact us for assistance with compatibility, fitment, and tuning baselines for any application to which you wish to move your SmartCarb. A metering rod change may be required.

You may order on our Shop page, over the phone, or we can send you a PayPal invoice via email.

We collect the information below when you order, whether on our Shop page, or when ordering by phone or PayPal invoice sentt to your email address.

• Year/make/model of your application.
• Notable engine/exhaust modifications.
• How you ride or your riding style(s).
• What fuel type you are using and what oil and ratio you are mixing (if applicable).

A technician may reach out to you for more information if required (unique or highly modified applications).

For information about SmartCarb dealers near you please visit our Dealers page. If you own or manage a shop that is interested in becoming a SmartCarb dealer, please contact us.

We use UPS for both domestic and international shipments. Alternative carriers can be used upon request. Contact us for more specific information.

Shipping rates vary by location and product type/quantity. Contact us for more specific information including expedited shipping options.

Yes, we ship worldwide. Note that any import duties or taxes that may apply are the purchaser's responsibility and are not included in the shipping price. Check with your local authorities regarding any fees or charges that may be due at the time of delivery.

All Internationally shipped packages are labeled "Motorcycle Carburetor" under Harmonized Tariff Schedule (HTS) commodity code 8714.10.0050

In most cases no, SmartCarbs are designed to be a direct fit and accept stock throttle cables for applications already using Keihin PE, PJ, PWK and Mikuni VM and TM series carburetors of similar sizes. We will advise you regarding SmartCarb compatible components for unique applications if necessary.

Yes! As an American manufacturer, we are proud to offer US military service members and veterans a 10% discount with free shipping. Please contact us directly to provide proof of service when ordering.

SmartCarb installation is easy, however airboot modification may be required for some applications. View the Quick Start Guides below for more information.

• 26/28mm SC2 SmartCarb Quick Start Guide
• 36, 38, 40mm SC2 SmartCarb Quick Start Guide

In most applications the SmartCarb is very easy to install and fine tune. Some applications present fitment considerations, however we notify you and walk you through anything that is required before or at the time of purchase. Contact us with questions about your particular application.

SmartCarbs are externally adjustable hand, without tools, in seconds. See the SmartCarb Tuning Mini Guide for more information.

Please contact us directly if you think you need a different metering rod or fuel profile for your application. We are able to advise you on selection and baseline settings. Changing the metering rod is very easy. Step by step instructions are included in the User Manual included with your purchase. Digital User Manuals are available on our Tech Support page.

Yes, you can, however, there are a few things to consider. Contact us for more information.

We have no hard recommendations on oil selection or ratio to mix at, however, we may make suggestions. Using a high quality synthetic oil at a reasonable ratio for the given application is advised. If after fully tuning your SmartCarb you are still seeing excessive spooge down the silencer or out of the exhaust, you may consider leaning the oil out a little bit.

Depending on the nature of the modifications, we may suggest alternative settings or changing the metering rod in certain cases. Most modifications will not require a different metering rod (reeds, pipes, silencers, etc), however high compression heads, port work, and big bore kits sometimes do. Contact us for more advice specific to your needs.

SmartCarbs are built to last, however basic maintenance is required to keep them performing optimally. We recommend a thorough cleaning annually and the replacement of service parts as needed every few years. Cleaning instructions and more detailed maintenance requirements are available in the User Manual included with your purchase. Digital User Manuals are available on our Tech Support page.

Rebuild Kits are available to view/purchase here.

All SmartCarbs ship with float bowl drains for easy draining and float level troubleshooting, however we recommend leaving fuel in the SmartCarb when stored away. Please use a fuel stabilizer when doing so and drain the carb and tank and replace with fresh fuel when running the engine again. Leaving the SmartCarb to fully dry out over a long period of time can cause premature wear (shrinking or hardening) of the o-rings and gasket components.

Both the SmartCarb and the Lectron® share the same flat slide, metering rod carburetor concept and both were designed and inspired by the same inventor. The SmartCarb comprises a decades newer design that improves upon the shortfalls and limitations of earlier designs, including the original Lectron®. For more information on their shared history and how they compare, check out our SmartCarb vs Lectron article.

The short answer is that it doesn't.

SmartCarbs offer greater performance, fuel efficiency, consistency, and ease of use compared to conventional jet/needle carburetors. Keihin, Mikuni, and many other similar carburetor designs use multiple overlapping fuel and air circuits comprised of jets and a needle. The SmartCarb uses only a metering rod for fueling from idle to WOT, making it a true single circuit fuel system. Unlike conventional carburetors, SmartCarbs provide much finer fuel atomization and mixture control and are externally adjustable, without tools, in seconds. Integrated float bowl venting in the SmartCarb allows it to compensate for much wider elevation and temperature changes with minimal effect on mixture values, while also making it a sealed system that does not spill fuel, even when tipped over.

SmartCarb brings carburetion into the 21st century.

SmartCarb is often said to feel as close to fuel injection as carburetion gets, and we agree.

Compared to most EFI setups, the SmartCarb offers similarly linear power delivery, excellent fuel efficiency and mixture value consistency regardless of elevation and temperature changes, and comparable ease of use. It does so while still offering the best aspects of carburetion, including design simplicity, that powerful carburetor feel/performance, and laptop-free troubleshooting, all without the need for a suite of sensors, wiring, and the added complexity and failure points inherent to EFI.

We recommend replacing size for size in most cases, though there are some notable exceptions. Some applications can work with multiple sizes depending on your performance goals. We are available to answer any sizing related questions you may have, please contact us with questions.

Our six (6) month warranty against manufacturing and workmanship defects applies to all SmartCarbs and kit components purchased new. For more information about our warranty policies and satisfaction guarantee, see the Orders & Returns page.

Yes, twice. It will set you up for success! View them online here.