The 2-Stroke Speed Carburetor adds a boost of power to nearly all 2-stroke 48cc and 66/80cc motorized bicycle engine kits. With .72mm fuel jets (larger than the stock NT carburetor that comes with most bike engine kits), more fuel and air are able to enter the carburetor, resulting in higher speeds.

This carburetor has air intake & discharge port diameters of 3mm, larger on both sides of the brass slide, giving you much better idle at a lower RPM than other carbs. Installing this on your 2-stroke engine will have you flying down any track with more low-end torque and better fuel economy than other high-performance carburetors. Whether your motorized bike needs a boost of speed or youre looking for better fuel economy, this Speed Carburetor will give you the performance youve been looking for.

Parts #13-15, 22-26, and 33-50 on the Fuel Components Diagram

Newly designed 2-Stroke complete Speed Carburetor fits all engine sizes.

The difference in power is “night and day”. Receive more power from the larger jet needle slide.

For the BBR Tuning line of bicycle engine, the factory produces a carburetor designed for the 66cc and 48cc engine. The improved carburetor uses a larger barrel slide for the throttle body for increased performance (some models also have a built on fuel shut-off valve). This new carburetor has the air intake & discharge hole diameters 3mm larger on both sides of the brass slide. There is a better screw connection for the intake manifold.

The Speed Carburetor will idle much better at a lower RPM, has more low-end torque and better fuel economy.

Jet Size: 0.72mm

*Note: This carburetor’s filter may vary in shape and color. However, the carburetor will perform just as well!