{"product_id":"wolverine-bolt-cylinder-head","title":"Wolverine BOLT Cylinder Head — VSR-10 and BAR-10","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;\"\u003eWolverine BOLT Cylinder Head — platform-specific, so order by rifle.\u003c\/strong\u003e Genuine Wolverine part for the BOLT engine, in Tokyo Marui VSR-10 and JG BAR-10 fitments.\n\u003c\/div\u003e\n\u003cp\u003eThe cylinder head is where the BOLT engine meets the rifle's cylinder, and it is the joint that has to stay airtight under the full working pressure of the engine. It is also the part that suffers when someone over-torques an assembly or runs the rifle with a tired o-ring, because the sealing face takes the damage first.\u003c\/p\u003e\n\u003cp\u003eTokyo Marui and JG cylinders are dimensionally different, which is why this is sold as two fitments rather than one universal part. Order by the rifle, not by the engine — the engine is the same in both cases.\u003c\/p\u003e\n\u003cp\u003eIf your BOLT has started losing pressure between shots and the o-rings are fresh, the head is the next thing to inspect. A hairline mark across the sealing face is enough to vent a full tank overnight.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eSpecifications\u003c\/h2\u003e\n\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;\"\u003eFits\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eWolverine BOLT HPA engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003ePlatforms\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTokyo Marui VSR-10, JG BAR-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eSold as\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCylinder head only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eWolverine Airsoft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhich one do I need?\u003c\/strong\u003e Match it to the rifle. A Tokyo Marui VSR-10 takes the TM head; a JG BAR-10 takes the JG head. They are not interchangeable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the BOLT M?\u003c\/strong\u003e No. The BOLT M uses its own cylinder head, which is a separate listing and covers three platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the o-ring included?\u003c\/strong\u003e No. Fit a fresh o-ring from the BOLT service kit whenever you replace the head.\u003c\/p\u003e\n\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 Check the sealing face with a fingernail before reassembly — if you can feel a ridge, the head is done. Browse \u003ca href=\"\/collections\/hpa-spares-upgrade-parts\" style=\"color:#cdd6f4;\"\u003eHPA Spares \u0026amp; Upgrade Parts\u003c\/a\u003e for the matching service kits.\n\u003c\/div\u003e","brand":"Wolverine Airsoft","offers":[{"title":"Tokyo Marui VSR-10","offer_id":55657824977272,"sku":"8604623115","price":19.95,"currency_code":"GBP","in_stock":true},{"title":"JG BAR-10","offer_id":55657825010040,"sku":"9896019483","price":26.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/8097\/3450\/files\/WolverineBOLTCylinderHead_TitanForgeAirsoft_0d6d5b69-a235-4a0a-a360-af03f85a9ad4.webp?v=1789120642","url":"https:\/\/www.titanforgeairsoft.com\/products\/wolverine-bolt-cylinder-head","provider":"Titan Forge Airsoft","version":"1.0","type":"link"}