Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 39 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 39 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 40 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 40 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 40 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 40 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 40 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 40 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 40 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 40 Teeth

Vortex Rear Sprockets are made to precise specifications from aluminum ensuring concentricity and durability. Lightening holes reduce rotating mass. 428 Chain Pitch 40 Teeth