Chain Drive System

Freewheel Sprocket & HD Axle Kit w/Brake

$49.99

Kit includes a freewheel sprocket, heavy duty axle, and drum brake. For use with StarFire and SkyHawk bicycle engine kits. Please specify either 44, , 48, or 56 tooth sprocket. Not sure which sprocket to choose? Check out our Bicycle Engine Sprocket...

Freewheel Sprocket for HD axle

$19.99

Rear freewheel sprocket for heavy duty axle. For use with 4 Stroke bicycle engine kits - requires Freewheel Thread. Available in 3 sizes: 44 Tooth, 48 Tooth, and 56 Tooth. Not sure which sprocket to choose? Check out our Bicycle Engine Sprocket Guide...