Federal v4 freecoaster hubfederals v4 freecoaster hub is a smooth rolling rear hub with a 9 tooth sprocket this aluminium v4 freecoaster hub is strong durable and weighs a moderate 315 grams complete with hubguards for increased durability and impact resistance this v4 freecoaster hub is a solid addition to any custom bmx or replacement rear wheel featuresmaterial aluminiumspoke count 36h9 toothhubguardsdurableweight 315gbuyfederal wheels tyresfrom chain reaction cycles the world