{"product_id":"polarstar-fusion-low-flow-poppet","title":"PolarStar Fusion Low-Flow Poppet — Gold and Red","description":"\u003cdiv style=\"background:#edfaf1;border-left:4px solid #27ae60;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#1a6b3a;\"\u003ePolarStar Fusion Low-Flow Poppet — the part that decides how much energy each shot carries.\u003c\/strong\u003e Gold at .0465 and red at .0625, both with retainer O-ring.\u003c\/div\u003e\u003cp\u003ePoppets control how much air the engine releases per shot, which makes them the primary tuning component on a Fusion. There are only \u003cstrong\u003etwo low-flow poppets\u003c\/strong\u003e: \u003cstrong\u003egold at .0465\u003c\/strong\u003e and \u003cstrong\u003ered at .0625\u003c\/strong\u003e. Gold is the lower flow of the two, red the higher.\u003c\/p\u003e\u003cp\u003eA low-flow poppet moves the restriction point \u003cstrong\u003eback from the nozzle to the valve itself\u003c\/strong\u003e, and that is the whole trick. On a stock engine the nozzle is the restriction, which leaves air backed up between poppet and nozzle that can only vent as fast as the nozzle allows. Restrict at the valve instead and less air is released in the first place — PolarStar rate the gain at \u003cstrong\u003eup to 50% better air efficiency at the same muzzle energy\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eThere is a second benefit that people miss: with the restriction further back, air has room to expand slightly before reaching the barrel, which reduces turbulence behind the BB and can improve accuracy a little.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe pairing matters, and this is where people get it wrong.\u003c\/strong\u003e Because the poppet is now the restriction, you want a \u003cem\u003ehigher\u003c\/em\u003e-flow nozzle behind it — black, silver or red — not a restrictive one. Fitting a low-flow poppet and a restrictive nozzle together fights itself and wastes the efficiency you paid for.\u003c\/p\u003e\u003cp\u003eAs a rough guide: \u003cstrong\u003egold\u003c\/strong\u003e suits longer barrels and around 400 FPS on 0.25g. \u003cstrong\u003eRed\u003c\/strong\u003e suits shorter or wide-bore barrels where you need a higher FPS ceiling.\u003c\/p\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eSpecifications\u003c\/h2\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;margin:0 0 18px;\"\u003e\n\u003ctr style=\"background:#1B3A6B;color:#fff;\"\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eLow-flow poppet valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eOptions\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eGold (.0465) and Red (.0625)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eGold\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eLower flow — longer barrels, around 400 FPS on 0.25g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eRed\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eHigher flow — shorter or wide-bore barrels, higher FPS ceiling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eFits\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003ePolarStar Fusion engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eIncluded\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003ePoppet and retainer O-ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003ePair with\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eA higher-flow nozzle: black, silver or red\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eEfficiency gain\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eUp to 50% over stock at the same muzzle energy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003ePolarStar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eGood to know before you buy\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eChanging a poppet changes your muzzle energy.\u003c\/strong\u003e Always chronograph after fitting and confirm you are inside your site limit before playing.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePair it with a higher-flow nozzle\u003c\/strong\u003e — black, silver or red. A low-flow poppet behind a restrictive nozzle wastes the efficiency gain entirely, which is the most common mistake with these.\u003cbr\u003e\u003cbr\u003eGold for longer barrels, red for shorter or wide-bore setups. Tell us your barrel and target FPS and we will pick one.\u003c\/p\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between gold and red?\u003c\/strong\u003e\u003cbr\u003eBore size and therefore flow. Gold is .0465 and the lower flow of the two; red is .0625 and the higher. Gold suits longer barrels at around 400 FPS on 0.25g; red suits shorter or wide-bore barrels needing a higher FPS ceiling.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a low-flow poppet improve efficiency?\u003c\/strong\u003e\u003cbr\u003eIt moves the restriction from the nozzle back to the valve, so less air is released per shot rather than air being released and then held up. PolarStar rate it at up to 50% better efficiency at the same muzzle energy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich nozzle should I use with it?\u003c\/strong\u003e\u003cbr\u003eA higher-flow one — black, silver or red. This catches people out: because the poppet is now the restriction, a restrictive nozzle fights it and throws away the benefit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to re-chronograph after fitting?\u003c\/strong\u003e\u003cbr\u003eYes, always. A poppet change alters energy output and you need to confirm you are inside your site limit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the O-ring included?\u003c\/strong\u003e\u003cbr\u003eYes, the retainer O-ring comes with each poppet.\u003c\/p\u003e\u003cdiv style=\"background:#fffbe6;border-left:4px solid #f0d060;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e⚠ \u003cstrong\u003eRunning HPA:\u003c\/strong\u003e always feed an engine through a secondary regulator and never connect it directly to a tank output. Check the rated pressure before setting a regulator, and chronograph to your site limit before playing.\u003c\/div\u003e\u003cdiv style=\"background:#1B3A6B;color:#fff;padding:12px 16px;border-radius:6px;margin:18px 0 0;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#fff;\"\u003e💡 Titan Forge Airsoft tip:\u003c\/strong\u003e see the \u003ca href=\"\/products\/polarstar-fusion-engine-drop-in-kit-gen3-v2-m4-m16-uk-spec-red-low-flow-poppet-red-nozzle\" style=\"color:#cdd6f4;\"\u003eFusion GEN3\u003c\/a\u003e these tune. We are an HPA tech centre and fit, tune and chronograph these in the workshop, or \u003ca href=\"https:\/\/wa.me\/447874452357\" style=\"color:#cdd6f4;\"\u003emessage us on WhatsApp\u003c\/a\u003e.\u003c\/div\u003e","brand":"Polarstar","offers":[{"title":"Gold","offer_id":55648903037304,"sku":"10000281","price":39.95,"currency_code":"GBP","in_stock":true},{"title":"Red","offer_id":55648903168376,"sku":"10000280","price":39.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/8097\/3450\/files\/PolarStarFusionLow-FlowPoppet_TitanForgeAirsoft-1.webp?v=1788520720","url":"https:\/\/www.titanforgeairsoft.com\/products\/polarstar-fusion-low-flow-poppet","provider":"Titan Forge Airsoft","version":"1.0","type":"link"}