{"product_id":"bikeman-performance-replacement-billet-head-domes-for-polaris-800-850-900","title":"Bikeman Performance Replacement Billet Head Domes for Polaris (800 \/ 850 \/ 900)","description":"\u003cp\u003e\u003cstrong\u003eBikeman Performance Replacement Billet Head Domes for Polaris (800 \/ 850 \/ 900)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBikeman Performance Replacement Billet Head Domes for Polaris 800\/850\/900 snowmobiles let you tune compression ratio for elevation, race fuel, or pump gas by swapping domes in Bikeman Modular Billet Head shells without replacing the whole head. CNC-machined with custom squish band profile and combustion chamber geometry for efficient flame propagation, lower operating temps, and detonation suppression. Features: modular compression tuning; optimized combustion geometry; precision CNC machined from high-grade aluminum for volume consistency and thermal dissipation; drop-in fit exclusively for Bikeman Polaris Billet Head Shells. Options: 800 Low Alt 41cc (04-311-800-41), 800 High Alt 37.5cc (04-311-800-37.5), 850 Low Alt 40.5cc\/11.8:1 (04-318-850-40.5), 850 High Alt 36.5cc\/12.5:1 (04-318-850-36.5), 900\/9R\/Big Bore Pump Gas 42cc (04-318-900-42), 900 Race Gas 37cc (04-318-900-37).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e Polaris: Patriot Boost Long Track, Patriot Boost Short Track, Patriot 9R, Patriot 850 NA Long Track, Patriot 850 NA Short Track, AXYS 850, AXYS 800 H.O..\u003c\/p\u003e\u003cp\u003e\u003cem\u003ePart # 04-311-800-37.5, 04-311-800-41, 04-318-850-36.5, 04-318-850-40.5, 04-318-900-37, 04-318-900-42.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003eNot sure what fits your sled? Email kyle@freshiesbuilt.com with your year, make, model and track length.\u003c\/p\u003e","brand":"Bikeman Performance","offers":[{"title":"Polaris 800 Low Altitude","offer_id":67779323724012,"sku":"04-311-800-41","price":90.0,"currency_code":"USD","in_stock":true},{"title":"Polaris 800 High Altitude","offer_id":67779323756780,"sku":"04-311-800-37.5","price":90.0,"currency_code":"USD","in_stock":true},{"title":"Polaris 850 Low Altitude","offer_id":67779323789548,"sku":"04-318-850-40.5","price":90.0,"currency_code":"USD","in_stock":true},{"title":"Polaris 850 High Altitude","offer_id":67779323822316,"sku":"04-318-850-36.5","price":90.0,"currency_code":"USD","in_stock":true},{"title":"Polaris 900 Pump Gas","offer_id":67779323855084,"sku":"04-318-900-42","price":90.0,"currency_code":"USD","in_stock":true},{"title":"Polaris 900 Race Gas","offer_id":67779323887852,"sku":"04-318-900-37","price":90.0,"currency_code":"USD","in_stock":true},{"title":"Polaris 850 Boost Turbo Dome","offer_id":67779323920620,"sku":null,"price":90.0,"currency_code":"USD","in_stock":true},{"title":"Polaris 900 Boost Dome All Elevation","offer_id":67779323953388,"sku":"04-318-900-45","price":90.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0570\/6357\/1611\/files\/head-domes.jpg?v=1792341248","url":"https:\/\/freshiesbuilt.com\/products\/bikeman-performance-replacement-billet-head-domes-for-polaris-800-850-900","provider":"Freshies Built, LLC","version":"1.0","type":"link"}