{"product_id":"cylinder-head-21-23-62mm-nk600-75","title":"Cylinder Head 21\/23-62Mm Nk600.75","description":"Cylinder Head 21\/23, 62mm for Yamaha X-Max, YZF, WR 125\u003cli\u003eNaraku Racing 4-valve cylinder head with 62mm combustion chamber to satiate your appetite for power\u003c\/li\u003e\u003cli\u003eIncreased flow, reinforced valve springs and larger valves (21 \/ 23mm)\u003c\/li\u003e\u003cli\u003eSuitable for Yamaha X-Max, WR, YZF-R 125 and other 125 mopeds with YI-3 engine\u003c\/li\u003e\u003cli\u003eThe carburetor or fuel injection system must be re-tuned (z. B. with Malossi Force Master)\u003c\/li\u003e\u003cli\u003eThe cylinder head is suitable for following big bore cylinders: Naraku NK600.74, Polini 166.0101, Malossi M.3114852 and other cylinders with 62-64mm bore\u003c\/li\u003e\u003cli\u003eCombustion chamber: 62mm\u003c\/li\u003e\u003cli\u003eIntake valves: 23mm exhaust valves: 21mm\u003c\/li\u003e\u003cli\u003eNew models have the lambda sensor connection directly on the outlet (this must be closed on older models)\u003c\/li\u003e\u003cli\u003eScope of delivery without shafts for roller cam followers\u003c\/li\u003e","brand":"Naraku","offers":[{"title":"Default Title","offer_id":50869431796042,"sku":"25PTS011285","price":492.56,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0888\/8949\/1786\/files\/d5c4185e86e72887df4b60186996bc1e_600.webp?v=1751960150","url":"https:\/\/throttleandgear.com\/products\/cylinder-head-21-23-62mm-nk600-75","provider":"Throttle \u0026 Gear Co. Ltd.","version":"1.0","type":"link"}