{"product_id":"vhm-yamaha-yz250-99-22-yz250x-16-22-cylinder-head-insert","title":"VHM Yamaha YZ250 99-22 \/ YZ250X 16-22 Cylinder Head Insert","description":"\u003cp\u003eExchangeable combustion chamber insert for VHM cylinder head AA33080. Each insert has a different combustion chamber volume, so the compression and power delivery can be set up for the track, conditions and fuel. The last digits of the part number are engraved on the insert.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFITS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e20.20cc - AE32021-C (higher compression): Yamaha: YZ250 99-22\u003c\/li\u003e\n\u003cli\u003e20.60cc - AE32021-B (VHM standard for YZ250): Yamaha: YZ250 99-22\u003c\/li\u003e\n\u003cli\u003e21.00cc - AE32021-009 (lower compression): Yamaha: YZ250 99-22\u003c\/li\u003e\n\u003cli\u003e21.80cc - AE32021-092 (VHM standard for YZ250X): Yamaha: YZ250X 16-22\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOPTIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e20.20cc - AE32021-C (higher compression)\u003c\/li\u003e\n\u003cli\u003e20.60cc - AE32021-B (VHM standard for YZ250)\u003c\/li\u003e\n\u003cli\u003e21.00cc - AE32021-009 (lower compression)\u003c\/li\u003e\n\u003cli\u003e21.80cc - AE32021-092 (VHM standard for YZ250X)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSmaller volume (higher compression): more bottom-end and mid-range, suits deep sand, needs good fuel to avoid detonation\u003c\/li\u003e\n\u003cli\u003eLarger volume (lower compression): more over-rev and top speed, suits hard-pack\u003c\/li\u003e\n\u003cli\u003eQuick to change at the track\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eFits VHM cylinder heads only, not the OEM head. The head and its O-ring kit are sold separately.\u003c\/em\u003e\u003c\/p\u003e\n","brand":"VHM","offers":[{"title":"20.20cc - AE32021-C (higher compression)","offer_id":67522029158641,"sku":"SER-VHM-AE32021-C","price":112.95,"currency_code":"AUD","in_stock":true},{"title":"20.60cc - AE32021-B (VHM standard for YZ250)","offer_id":67522029191409,"sku":"SER-VHM-AE32021-B","price":112.95,"currency_code":"AUD","in_stock":true},{"title":"21.00cc - AE32021-009 (lower compression)","offer_id":67522029224177,"sku":"SER-VHM-AE32021-009","price":157.95,"currency_code":"AUD","in_stock":true},{"title":"21.80cc - AE32021-092 (VHM standard for YZ250X)","offer_id":67522029256945,"sku":"SER-VHM-AE32021-092","price":157.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/0456\/3441\/files\/52213_1.jpg?v=1794689675","url":"https:\/\/goldcoastdirtbikeperformance.com.au\/products\/vhm-yamaha-yz250-99-22-yz250x-16-22-cylinder-head-insert","provider":"Dirt Bike Performance","version":"1.0","type":"link"}