2022-2025 Ultra bee Electric dirt bike UB upgrades first stage drive kit Belt drive is upgraded to chain drive kits

Ultra bee upgrades first stage drive kit

Belt drive is upgraded to chain drive

Adopting 219 chain program. Ultra Bee has been tested for one year. low noise. less heat. more stable and durable.

Small sprocket double teeth design. the light bee and the extreme bee made into one.

Light Bee uses inner small teeth.

The light bee uses the inner small teeth. and the extreme bee uses the outer large teeth.

The chain is made of KMC. special for racing karts. with thickened and titanium coated chain. which is strong and durable.

Reduction ratio is 2.5. stock ratio is 2.3. torque increased by 8%.

Sprockets are made of chrome steel with rust-proof plating on the surface. and are designed with full-fit teeth and mud draining grooves.

Installation instructions:Dental disk directly replace the original pulley. the front flywheel large teeth facing outward. and then set the washer locking screws. the inner small flywheel is idle.

This set of products for your race or high-intensity traversing to bring reliable protection!