{"product_id":"xr-crf50-88cc-big-bore-kit-w-cam-bbr","title":"XR \/ CRF50 88cc Big Bore Kit W\/Cam - BBR","description":"\u003cdiv class=\"bbr-description\"\u003e\n\u003cp\u003e\u003cstrong\u003eXR \/ CRF50 88cc Big Bore Kit W\/Cam - BBR\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eImpressive Power. Engineered and developed by BBR. This cylinder retains skid plate mounts and includes: BBR aluminum cylinder, piston kit, exclusive BBR motocross-grind camshaft and gasket kit. Easy bolt-on instructions included. The most reliable kit available. Runs great with stock carb or bolt on BBR's 18mm carb kit.\u003cbr\u003e\u003cbr\u003eAlso fits 1988-1999 Z50R with short piston.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"bbr-bullet-points\"\u003e\n\u003cul class=\"bbr-ul\"\u003e\n\u003cli\u003eCylinder retains skid plate mounts\u003c\/li\u003e\n\u003cli\u003eBBR aluminum cylinder\u003c\/li\u003e\n\u003cli\u003e52mm piston specially designed to work with your stock cylinder head's combustion chamber\u003c\/li\u003e\n\u003cli\u003eMX-grind camshaft\u003c\/li\u003e\n\u003cli\u003eGasket kit\u003c\/li\u003e\n\u003cli\u003eEasy bolt-on instructions included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"bbr-additional-info\"\u003e\n\u003cp\u003e\u003cb\u003eInstallation Note:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eThis kit will not work with the Honda XR\/CRF70 or other big port cylinder heads. It is designed for the tiny combustion chamber of the OEM Honda XR\/CRF50 cylinder head. The flat top piston dome will result in an extremely low compression ratio when combined with the XR\/CRF70 type cylinder head. The result is a motor that makes less horsepower than stock. This is the correct\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/bbrmotorsports.shop\/products\/411-HXR-7001\" target=\"_self\"\u003eBBR bore kit for the XR\/CRF70\u003c\/a\u003e.\u003cbr\u003e\u003cbr\u003e\u003ca href=\"http:\/\/www.bbrmotorsports.com\/Tech\/FAQ\/Documents\/JettingChart.htm\" target=\"_blank\"\u003e\u003cbr\u003eBBR General Jetting Guidelines Chart\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BBR","offers":[{"title":"Default Title","offer_id":48043521671320,"sku":"411-HXR-5500","price":399.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0469\/9924\/0856\/files\/Screenshot2026-01-22131315.png?v=1769048007","url":"https:\/\/www.ozminis.com.au\/products\/xr-crf50-88cc-big-bore-kit-w-cam-bbr","provider":"Ozminis Motorsport","version":"1.0","type":"link"}