SPP HG-Compatible Chromoly BMX Cog

The SPP HG-Compatible Chromoly Cog is precision-engineered and heat treated for HG freehub bodies (Shimano® compatible), built to withstand the explosive torque demands of BMX racing.

At the core of the design is SPP’s SUPERSIZED™ 5 mm-wide inner base, creating a broader and more stable interface with the cassette body. This wider contact surface reduces flex and micro-movement under load, ensuring consistent power transfer during hard gate starts and full sprint efforts.

CNC-machined from high-strength chromoly steel, the cog delivers exceptional durability while maintaining precise engagement with HG freehub splines. The ED Black finish with laser-etched graphics provides corrosion resistance and a clean, race-ready appearance.

Built for riders who demand reliability at full sprint, the SPP HG-Compatible Cog delivers strength, precision, and dependable performance for BMX race setups.

Why Riders Choose the SPP HG Cog

SUPERSIZED™ Base Design – 5 mm inner base increases contact area and reduces cassette flex.

Race-Ready Strength – CNC-machined chromoly steel construction handles high torque loads.

Improved Power Transfer – Reduced micro-movement under load for more efficient acceleration.

HG Freehub Compatible – Fits Shimano®-style cassette driver bodies.

Durable Finish – ED Black coating with laser-etched graphics for long-lasting performance.

Specifications

• Brand: Syndyt Precision Parts (SPP)

• Material: Chromoly steel

• Manufacturing: CNC-machined and heat treated

• Compatibility: HG freehub bodies (Shimano® compatible)

• Inner Base Width: 5 mm SUPERSIZED™ interface

• Finish: ED Black with laser-etched graphics

• Use: BMX Racing

• Sizes & Weights:
  • 13T — 24 g
  • 14T — 29 g
  • 15T — 35 g
  • 16T — 38 g
  • 17T — 43 g
  • 18T — 51 g