{"product_id":"heat-treated-dangerboy-decimal-chromoly-cog-hg-freehub-compatible-15-3-to-18-8","title":"Dangerboy Decimal Chromoly Cog – HG Freehub Compatible 15.3 to 18.8","description":"\u003cp class=\"p1\"\u003e*New heat-treated cogs are now black. Updated product photos coming soon.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eDangerboy Decimal Chromoly Cog – HG Freehub Compatible\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eSpecially developed for \u003cspan class=\"s1\"\u003e\u003cb\u003eBMX racing\u003c\/b\u003e\u003c\/span\u003e, the \u003cspan class=\"s1\"\u003e\u003cb\u003eDangerboy Decimal Series Cogs\u003c\/b\u003e\u003c\/span\u003e are engineered from \u003cspan class=\"s1\"\u003e\u003cb\u003eheat-treated Chromoly steel\u003c\/b\u003e\u003c\/span\u003e for superior durability, power transfer, and resistance to wear.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eEach cog is \u003cspan class=\"s1\"\u003e\u003cb\u003eCNC-machined\u003c\/b\u003e\u003c\/span\u003e to precise decimal tooth sizes, allowing riders to fine-tune gear ratios for optimal cadence and track conditions. The \u003cspan class=\"s1\"\u003e\u003cb\u003e5 mm wide inner base\u003c\/b\u003e\u003c\/span\u003e ensures a solid, stable interface with HG-style freehub bodies, improving torque distribution and drivetrain efficiency.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Material: Heat-Treated Chromoly Steel\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Process: CNC-Machined\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Finish: Raw Stainless Steel with Laser-Etched DB Graphics\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Sizes: 15.3T, 15.8T, 16.3T, 16.8T, 17.3T, 17.8T, 18.3T, 18.8T\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Driver Compatibility: HG Freehub Body\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Chain Compatibility: Full Link Chain\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Base Width: 5 mm\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHighlights:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Precision decimal sizing for fine gear ratio adjustment\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• CNC-machined for flawless fit and chain alignment\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Increased stiffness and long-lasting durability\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Ideal for elite BMX racers and drivetrain tuning\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e• Raw finish with signature laser-etched DB graphics\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003cp\u003eThe way to calculate a decimal cog is to interpolate between two whole cog sizes.\u003c\/p\u003e\n\u003cp\u003eFor example, with a \u003cspan\u003e\u003cb\u003e44 \/ 16 gear ratio\u003c\/b\u003e\u003c\/span\u003e, if you’re considering a \u003cspan\u003e\u003cb\u003e16.3 cog\u003c\/b\u003e\u003c\/span\u003e, you:\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eTake the rollout difference between a \u003cspan\u003e\u003cb\u003e16T and 17T cog\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThen subtract \u003cspan\u003e\u003cb\u003e30% of that difference from the 16T rollout\u003c\/b\u003e\u003c\/span\u003e (since 16.3 is 30% of the way to 17)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis gives you an accurate estimate of the effective rollout for a 16.3 cog.\u003c\/p\u003e","brand":"Dangerboy","offers":[{"title":"15.3","offer_id":58615733846319,"sku":"DANGERBOY-CROMOLY-DECCIMAL-COG-15.3","price":65.0,"currency_code":"CAD","in_stock":true},{"title":"15.8","offer_id":58615733879087,"sku":"DANGERBOY-CROMOLY-DECCIMAL-COG-15.8","price":65.0,"currency_code":"CAD","in_stock":true},{"title":"16.3","offer_id":58615733911855,"sku":"DANGERBOY-CROMOLY-DECCIMAL-COG-16.3","price":65.0,"currency_code":"CAD","in_stock":true},{"title":"16.8","offer_id":58615733944623,"sku":"DANGERBOY-CROMOLY-DECCIMAL-COG-16.8","price":65.0,"currency_code":"CAD","in_stock":true},{"title":"17.3","offer_id":58615733977391,"sku":"DANGERBOY-CROMOLY-DECCIMAL-COG-17.3","price":65.0,"currency_code":"CAD","in_stock":true},{"title":"17.8","offer_id":58615734010159,"sku":"DANGERBOY-CROMOLY-DECCIMAL-COG-17.8","price":65.0,"currency_code":"CAD","in_stock":true},{"title":"18.3","offer_id":58615734042927,"sku":"DANGERBOY-CROMOLY-DECCIMAL-COG-18.3","price":65.0,"currency_code":"CAD","in_stock":true},{"title":"18.8","offer_id":58615734075695,"sku":"DANGERBOY-CROMOLY-DECCIMAL-COG-18.8","price":65.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/3683\/6655\/files\/image_e72d9d41-06f0-47f9-aa41-6b5a20c3a99d.png?v=1791286334","url":"https:\/\/www.dangerboy.ca\/products\/heat-treated-dangerboy-decimal-chromoly-cog-hg-freehub-compatible-15-3-to-18-8","provider":"Dangerboy Industries","version":"1.0","type":"link"}