Dangerboy Decimal Chromoly Cog – Onyx / Oversized Freehub Compatible 15.3 - 18.8

Dangerboy Decimal Chromoly Cog – Onyx / Oversized Freehub Compatible Specially developed for BMX Racing, the Dangerboy Decimal Chromoly Cogs are engineered from heat-treated stainless steel to deliver maximum strength, precision, and long-term durability. Each cog is CNC-machined to exact decimal sizing, allowing fine-tuned gearing adjustments for elite riders who demand precise cadence control. The 5 mm wide inner base ensures a secure, solid interface with Shimano-compatible HG freehub bodies, minimizing wear and improving power transfer. Specifications: • Material: Heat-Treated Chromoly Steel • Process: CNC-Machined • Finish: Raw Stainless Steel with Laser-Etched DB Graphics • Sizes: 15.3T, 15.8T, 16.3T, 16.8T, 17.3T, 17.8T, 18.3T, 18.8T • Chain Compatibility: Full-Link Chain • Driver Compatibility: Onyx / Oversized Freehub Body • Base Width: 5 mm Highlights: • Decimal sizing for ultra-precise gear ratio control • CNC-machined for consistent chain engagement • Heat-treated Chromoly construction for maximum strength • 5 mm wide base for improved stability and torque transfer • Raw finish with laser-etched DB graphics The way to calculate a decimal cog is to interpolate between two whole cog sizes. For example, with a 44 / 16 gear ratio, if you’re considering a 16.3 cog, you: Take the rollout difference between a 16T and 17T cog Then subtract 30% of that difference from the 16T rollout (since 16.3 is 30% of the way to 17) This gives you an accurate estimate of the effective rollout for a 16.3 cog.