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Carburetors & Carb Kits
The carburetor is a key component in any spark-ignition engine. It works by mixing fuel and air together to create a combustible mixture that can be drawn into the engine cylinders and ignited. There are many different parts to a carburetor, all of which work together to ensure the correct mixture is delivered to the engine. The storage chamber holds the fuel that will be mixed with air, while the intakes draw in air from outside. The accelerator pumps help to deliver the correct amount of fuel to the engine cylinders. While most street-legal vehicles have now switched to fuel injectors, carburetors are still commonly used on karts and bikes. This is due to their simplicity, low cost and ability to provide good performance in a wide range of conditions.
We specialize in parts for karts and racing. Get carb parts and carburetor rebuild kits for some of the best performance racing vehicles, such as the Honda GX series, Chinese OHV, mini bike, and more.
6.5 Chinese OHV Carb (Ru*ing) Setup
Great for 6.5 and GX200 applications running open element air filters.
.95mm (.0375) Main Jet
.45mm (.018) Pilot Jet
22mm Round Slide Mikuni Carburetor
Chinese small body carburetor for OEM applications
Part# VM22-3847
*Note: Carburetor may have #90, #95, or #130 main jet, and may use a Mikuni style or a Keihin style pilot jet.
Honda GX160 Race Prepped Carburetor
Race prepped stock bore - OEM Honda
Jetted for open element air filter (#82 Main)
Choke and emission limiter removed
Race-Prepped Genuine Honda Carburetor for GX200
Genuine Honda
Stock Venturi
Special Emulsion Tube
Choke Removed.
Jetted for Open Element Filter
Ru*ing Chinese OHV Carburetor
Venturi bored to ~17.0mm (.670)
Circuitry reworked and jetted for 6.5 Chinese OHV and GX200 applications
Maximum performance for classes requiring stock-appearing carburetors
Approximately 0.5-1.5HP more than stock carb
Choke removed for methanol applications
Use for open applications where a stock-appearing carb is required (some loss of low-end). May have internal or external epoxy.
Ru*ing 6.5 Chinese OHV Carburetor
Venturi bored to ~16.5mm/.650
Circuitry reworked and jetted for 6.5 Chinese OHV & GX200 applications
Maximum performance for classes requiring stock appearing carbs
Approximately 0.5 to 1hp more than stock carb
Choke installed
This carb is recommended for most applications. We also offer a .670 carb for 7500+ rpm (some loss of low end).
May have internal or external epoxy.
.650" GX200 Honda Carburetor
GX200 bored-out and circuitry-reworked carburetor. Venturi 16.5mm (.650mm). 100% bolt-on. Approximately .05 to 0.75hp more than a stock carb, depending on application. Recommended for open motors requiring a stock-appearing carb. Choke is removed.
*Notes: These are OEM Honda (Keihin) cores. They produce .2 to .3 more HP than equivalent (bored) aftermarket carbs.
This carb is recommended for high RPM applications (some loss of low end). Use our .625 carb for applications requiring good torque and midrange along with easy starting.
May have internal or external epoxy.
Bored & Blueprinted Genuine Honda GX200 Carburetor
Bored out and circuitry-reworked GX200 carburetor
Venturi ~16.0 mm (.625)
100% bolt-on
Jetted for open element applications
Choke included
Approximately .03-0.5hp more than a stock carb, depending on application. Recommended for stock or mild motors to run stock, CL1 cam, or Mod2 type cams. Maximum size carb if running stock rod.
*Notes: These are OEM Honda (Keihin) cores. They produce .2-.3 more horsepower than equivalent (bored) aftermarket carbs.
This carb is recommended for applications requiring good torque and midrange along with easy starting. For high RPM applications (some loss of low end), use .650 bored carb.
Bored & Blueprinted Genuine Honda Carburetor - GX200
New .615 Genuine Honda carb for Chinese OHV racing classes, bored and blueprinted to meet Chinese OHV .615 bore specs. These carbs meet the dimensional specs, but will outperform the Chinese carbs. Circuitry is reworked to enhance low end performance.
SA Extreme, Large Butterfly Carburetor
Extensively modified, stock-appearing GX200/6.5 OHV Clone carb that produces the most HP possible utilizing a stock carb body.
In addition to having the largest Venturi area of any of our other bored carbs, the butterfly size has been significantly increased to provide 60% more airflow than a stock carb. Fuel circuits and jets have been reworked to maintain proper mixture. Choke is removed
Venturi is CNC-milled and oval-shaped to maximize volume and velocity. Equivalent bore size (area) is greater than a .670" bore.
Stage 2 carbs will have some internal or external epoxy. However, they flow slightly better than stage 3 carbs.
Dyno testing shows these carbs to produce up to 1hp more than a standard bored (stock butterfly) carb and over 2hp more than a stock carb with only marginal loss in low-end and idle quality.
SA Extreme, Large Butterfly Carburetor
Extensively modified, stock-appearing carb that produces the most HP possible utilizing a stock carb body. No external epoxy
In addition to having the largest Venturi area of any of our other bored carbs, the butterfly size has been significantly increased to provide 60% more airflow than a stock carb. Fuel circuits and jets have been reworked to maintain proper mixture. Choke is removed
Venturi is CNC milled and is oval shaped to maximize volume and velocity. Equivalent bore size (area) is greater than a .670" bore
Stage 3 carbs have no epoxy on them, however they flow same as the stage 2 carbs.
Dyno testing shows these carbs to produce up to 1hp more than a standard bored (stock butterfly) carb, and over 2hp more than a stock carb with only marginal loss in low-end and idle quality
SA Extreme, Large Butterfly Carburetor
Extensively modified, stock-appearing carburetor that produces the most HP possible utilizing a stock carb body.
In addition to having the largest Venturi area of any of our other bored carbs, the butterfly size has been significantly increased to provide 60% more airflow than a stock carb. Fuel circuits and jets have been reworked to maintain proper mixture
Similar to our Stage 3, but has additional work on inlet side (hand-worked for ~10% more flow)
May have internal or external epoxy
No choke
All Stage 4 carbs are dyno-tested before shipping. Dyno testing shows these carbs to produce up to 1.0+ HP more than the standard bored (stock butterfly) and over 2+ HP more than a stock carb with only marginal loss in low-end and idle quality
Venturi is CNC milled and is oval shaped to maximize volume and velocity. Equivalent bore size (area) is greater than a .670" bore
OEM Honda Carburetor - GX390
Race prepped (choke removed and re-jetted)
Circuitry reworked where required
Use with open element air filters or with velocity stacks.
Genuine OEM Honda Bored Carburetor
23.5mm Venturi
Choke removed
Circuitry reworked and jetted for open element air filters
Recommended for modified GX390s. Not recommended for GX200 applications
May have internal or external epoxy.
Genuine OEM Honda Bored Carburetor
The baddest 390 carb available!
23.5+mm Venturi
Bowl area extensively reworked
Choke removed
For use with open element air filters or with velocity stacks
May have external epoxy
28mm Black Round Slide Racing Carburetor
This new, race-ready 28mm bored carb has excellent dyno-proven power, throttle response, and smoothness on Honda, Predator, and "Clone" applications. This is the best "bolt-on" carb for 18hp+ applications
Chromed round-flat throttle valve for excellent response and more flow at high RPM
Uses standard round slide Mikuni main jets
Uses Keihin 21 Series pilot jets
Black crinkle finish
Fits our flat slide manifolds (hose required)
135 main and stock pilot recommended for most applications
For out-of-the-box applications, it is proven to be the best carb we have. However, compared to the flat slides, it does not have the same tuning capability.
*Note: Mikuni pilot jets will not fit. This requires Keihin 21 Series.
Genuine VM22 Mikuni Carburetor - Gas
22mm Round Slide Mikuni Carburetor Kit
Fits all GX160s, 200s, 6.5 Chinese OHVs
Kit Includes:
22mm Mikuni Style Carb (Small Body)
Manifold/Adapter
Air Filter (Foam or Filter)
Intake Gasket
Mounting Bolts
Appropriate Main Jet
Cable
A low-cost way to add HP!
*Note: Carb may come with the main jet loose or installed. Carbs do not use Mikuni jets.
22mm Round Slide Mikuni Kit
Fits all GX160s, 200s, 6.5 Chinese OHVs
Kit Includes:
Carb, VM22-3847 (Small Body)
Manifold/Adapter with pulse fitting
Air Filter (Cotton K&N Style)
Velocity Stack (Air Filter Adapter)
Gaskets
Bolts
Cable
*Note: Carb may come with main jet loose or installed. Carbs do not use Mikuni jets.
Carb Kit - 390 Carb to GX200 (GX160), 6.5 Chinese OHV
This carburetor kit has a GX390 carb with a special adapter and fixed jet. It includes all gaskets, bolts, filter adapter, jet, and an air filter. The special design eliminates the insulator. The carb is mounted at 15 degrees for karts using 15 degree mounts.
If using a flat motor mount, then "Flat Mount Adapter Kit" must be added (sold separately). Part Number NR-390FLATADAP
*Note: Bored carbs are only recommended for big bores and extreme RPM engines. Under most circumstances, a stock bore carb will perform better.
New, Race-Ready 28mm Bored (Nibbi) Carb Kit
Dyno-proven to provide excellent power, throttle response, and smoothness on Honda, Predator, and "Clone" applications. This is the best bolt-on kit for 18+HP and out-of-the-box applications. However, it does not have the tuning capability compared to the flat slides. Fits all GX160s, GX200s, 6.5 Chinese OHVs
28mm Bore
Chromed round-flat throttle valve for excellent response and more flow at high RPM
Uses standard round slide Mikuni main jets
Uses Keihin 21 Series pilot jets
Black crinkle finish
Fits our flat slide manifolds (hose required)
135 main and stock pilot recommended for most applications
Kit Includes:
Carb
Manifold/Adapter with Pulse Fitting and hose
Air Filter
Velocity Stack
Gaskets
Bolts
Main Jet
Cable
Mikuni pilot jets will not fit. Requires Keihin 21 Series pilot jets.
GX200 28mm Mikuni Flat Slide Gas Carb Kit
The Baddest Option for GX200s and Chinese OHVs
Kit includes manifold/adapter, air filter, air filter adapter/velocity stack, hose, and clamps. Note: this is a square slide carb, which is far superior to the cheap round slide Mikunis.
Comes with a jet kit, but some tuning and/or jet changes may be required
A 28mm gas carb is only recommended for serious big bores and strokers. Most applications will do better with the 24mm gas carb
*Picture for reference only. Actual parts may vary from picture (e.g. color of hose or manifold)
GX200 24mm Mikuni Flat Slide Carb Kit
BEST GAS CARB FOR GX200 AND 6.5 OHV
Kit includes manifold/adapter, air filter, air filter adapter/velocity stack, hose, and clamps. Note: this has a square slide carb, which is far superior to the cheap round slide Mikuni's. Some tuning and/or jet changes may be required.
*Picture is for reference only. Actual parts may vary from picture (e.g. color of hose or manifold).