$38.99

Neptune BMX Helm sprockets are CNC machined to perfection right here in the USA!

• CNC machined from solid aluminum for strength.
• 33 tooth. Perfect replacement gear for a 29" Big Ripper, Big Flyer, or any other big wheel bike!
• Teeth: 1/8″
• Bore: 19mm
• 4.5mm thick
• Available in BLACK, BLUE, GOLD, RED, PURPLE, and SILVER

Product Code: HELM33