{"product_id":"hpi-racing-101588-turbo-underhead-f3-5-pro-1","title":"Hpi Racing 101588 Turbo Underhead (F3.5 Pro)","description":"\u003cp\u003e\u003cstrong\u003eHpi Racing 101588 Turbo Underhead (F3.5 Pro)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is a genuine HPI Racing turbo underhead for the F3.5 Pro engine. The underhead forms the combustion chamber geometry that the F3.5 Pro's performance is built around, so a clean, undamaged underhead is essential for consistent power and tuning.\u003c\/p\u003e\u003cp\u003eIf yours has been damaged or worn through many gallons of running, this factory replacement restores proper sealing and combustion. Fits the F3.5 Pro and installs during normal engine service.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine HPI Racing part 101588\u003c\/li\u003e\n\u003cli\u003eTurbo underhead\u003c\/li\u003e\n\u003cli\u003eFor the HPI F3.5 Pro engine\u003c\/li\u003e\n\u003cli\u003eRestores proper sealing and combustion geometry\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the stock underhead\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PowerHobby","offers":[{"title":"Default Title","offer_id":44462971650136,"sku":"HPI101588","price":29.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0567\/0554\/8376\/files\/hpi101588_955b27bc-84da-403f-a597-50f61cdda210.jpg?v=1785046709","url":"https:\/\/beavertonmilestonehobby.com\/products\/hpi-racing-101588-turbo-underhead-f3-5-pro-1","provider":"Beaverton Milestone Hobby","version":"1.0","type":"link"}