Origami B1 Front Pinion - 7 Tooth - Slot InClick to enlarge Click the images below for alternate views Origami B1 Front Pinion - 7 Tooth - Slot In. This is for the watercooled version of the origami B1 rep. This is a great mod, and give the bike a higher top speed without losing too much start line acceration. Made "in House" by ourselves. £9.99SpecificationsProduct Code: Origami B1 Front Pinion - 7 Tooth - Slot InManufacturer: FunBikesProduct Weight: 0Stock Quantity - 0