Box One Oversized Single Speed Cog The Box One Oversized Single Speed Cog is engineered for elite BMX racers seeking maximum drivetrain efficiency, durability, and power transfer. Precision CNC machined from premium chromoly steel, this race-proven cog delivers exceptional strength and wear resistance while maintaining a lightweight profile. Designed with an oversized spline interface and a 5mm-wide inner base, the Box One Cog creates a more secure connection with the driver body, improving load distribution and reducing wear under high-torque sprinting conditions. The durable ED black finish and laser-etched graphics provide a premium appearance and long-lasting protection against the elements. Compatible with OS spline drivers, including the Onyx Ultra SS Driver, and suitable for both 3/32” and 1/8” chains, the Box One Oversized Single Speed Cog is the ideal choice for racers demanding reliable performance and precise chain engagement. Features: Precision CNC machined from high-strength chromoly steel Oversized spline interface for improved strength and engagement 5mm-wide inner base for a more secure fit on the driver body Durable ED black finish with laser-etched graphics Compatible with both 3/32” and 1/8” chains Designed for BMX racing and high-performance applications Fits OS spline drivers, including the Onyx Ultra SS Driver Specifications: Material: Chromoly Steel Manufacturing Process: CNC Machined Finish: ED Black with Laser-Etched Graphics Driver Compatibility: OS Spline Chain Compatibility: 3/32” and 1/8” Available Sizes: 14T, 15T, 16T, 17T, 18T Approximate Weights: 14T: 20g (0.70 oz) 15T: 28g (0.98 oz) 16T: 36g (1.27 oz) 17T: 38g (1.34 oz) 18T: 42g (1.48 oz) Built to handle the demands of modern BMX racing, the Box One Oversized Single Speed Cog delivers smooth engagement, exceptional durability, and efficient power transfer from the gate to the finish line.
