{"product_id":"os105hz-r-o-s-max-105hz-r-drs-helicopter-engine","title":"OS105HZ-R - O.S. Max 105HZ-R DRS Helicopter Engine","description":"\u003cp\u003e\u003cspan\u003eThis is the O.S. Max 105HZ-R DRS Helicopter Engine. The 105HZ-R DRS is the engine that precision aerobatic and 3D heli pilots have been waiting for! In order for 90-sized machines to nail huge maneuvers and hardcore, smack down-style 3D it's all about power, and the 105HZ-R have it in abundance. Displacement has been increased by 15%, and a huge venturi rams air into the carburetor, producing massive power, while remaining small enough to fit in a .90-sized mounting pattern.\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eFeatures:\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDisplacement of a 1.05 in the mounting space of a .90.\u003c\/li\u003e\n\u003cli\u003eMore displacement means more power, and these engines boost displacement by 15%!\u003c\/li\u003e\n\u003cli\u003eHuge venturi boosts output even further.\u003c\/li\u003e\n\u003cli\u003eThe machined, blue anodized heatsink head is light in weight, and cools the engine efficiently.\u003c\/li\u003e\n\u003cli\u003ePressurized DRS (Demand Regulator System), ensures consistent fuel flow regardless of the heli's attitude.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eDisplacement:\u003c\/strong\u003e\u003cspan\u003e 1.048 cu in (17.17cc)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eBore:\u003c\/strong\u003e\u003cspan\u003e 1.442\" (29mm)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eStroke:\u003c\/strong\u003e\u003cspan\u003e 1.024\" (26mm)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003ePractical RPM:\u003c\/strong\u003e\u003cspan\u003e 2,000-16,500\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e\u003cspan\u003e 3.75 hp @ 15,000 RPM\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eWeight:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e21.46 oz (608g)\u003c\/span\u003e\u003c\/p\u003e","brand":"O.S","offers":[{"title":"Default Title","offer_id":51257781420315,"sku":"OS105HZ-R","price":649.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/6067\/6123\/files\/20251101154156.png?v=1761982928","url":"https:\/\/www.xlpower-rc.com\/products\/os105hz-r-o-s-max-105hz-r-drs-helicopter-engine","provider":"XLPOWER","version":"1.0","type":"link"}