{"product_id":"primary-belt-to-chain-conversion-kit-420-rk-mxu-bonnell-805","title":"DirtyBike Primary Chain Drive Kit - Bonnell 805","description":"\u003cp\u003eThe DirtyBike primary chain drive kit replaces the stock belt and pulleys on the Bonnell 805 with an RK 420 MXU sealed chain and hardened steel sprockets. DirtyBike built it for riders who run the 805 in high power mode and wear belts out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eBonnell 805\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e The chain can be replaced without removing the swingarm.\u003c\/p\u003e\n\u003cp\u003eDirtyBike puts it plainly: run a Bonnell 805 in high power mode a lot and the belt will fail soon. The chain drive kit swaps the belt and pulleys for a strong, reliable RK 420 MXU sealed chain on hardened steel sprockets, keeps the gear ratio similar to stock, and makes maintenance easy.\u003c\/p\u003e\n\u003cp\u003eDirtyBike chose a 420 chain on purpose and does not offer a 520 for this bike: over the same size sprocket the larger links of a 520 have to articulate considerably more, which creates excess heat and can cause chain failure sooner. DirtyBike recommends its Ultra Bee swingarm alignment tool for lining up the mid shaft and the swingarm on the 805; it is listed here as the \u003ca href=\"https:\/\/gritshift.com\/products\/dirtybike-swingarm-alignment-tool-sur-ron-ultra-bee\"\u003eDirtyBike Swingarm Alignment Tool\u003c\/a\u003e.\u003c\/p\u003e","brand":"eDirtyBike","offers":[{"title":"Default Title","offer_id":67790822736101,"sku":"B805-PCD-420-RK-MXU-G","price":111.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/3964\/1496\/files\/Bonnell-805-PCD-db-420RK-gold.jpg?v=1792847713","url":"https:\/\/gritshift.com\/de\/products\/primary-belt-to-chain-conversion-kit-420-rk-mxu-bonnell-805","provider":"GritShift","version":"1.0","type":"link"}