{"product_id":"kawasaki-h1-500ss-crank-center-labyrinth-seal-labyri","title":"Kawasaki H1 500SS Crank Center Labyrinth Seal LABYRI","description":"\u003ch2\u003eItem Specifics\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003ctd\u003eMachine Type\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eItems Included\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003eManufacturer Part #\u003c\/td\u003e\n\u003ctd\u003eLABYRI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Model\u003c\/td\u003e\n\u003ctd\u003eH1 500SS\u003c\/td\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminum (Anodized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperseded Part\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003eVintage Part\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eCrank Center Labyrinth Seal\u003c\/td\u003e\n\u003ctd\u003eInterchange Part #\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer Warranty\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003eOE\/OEM Part #\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry\/Region of Manufacture\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eAnodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePerformance Part\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a \u003cstrong\u003ecrank center labyrinth seal\u003c\/strong\u003e specifically designed for the \u003cstrong\u003eKawasaki H1 500SS\u003c\/strong\u003e.\u003cbr\u003eManufactured and precision-machined by \u003cstrong\u003eInoue Boring\u003c\/strong\u003e, this seal offers outstanding durability and airtightness, ideal for high-performance 2-stroke engines.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible Model: Kawasaki H1 500SS\u003c\/li\u003e\n\u003cli\u003eType: Center Labyrinth Seal (LABYRI)\u003c\/li\u003e\n\u003cli\u003eManufacturer: Inoue Boring (Japan)\u003c\/li\u003e\n\u003cli\u003eHigh-precision machining for optimal sealing performance\u003c\/li\u003e\n\u003cli\u003eMade in Japan – trusted by vintage motorcycle restorers and tuners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEnsure proper crankcase pressure management and long engine life with this high-quality replacement part.\u003c\/p\u003e\n\u003ch3\u003eThe Biggest Weakness of 2-Stroke Engines — Solved\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003ebiggest weakness of 2-stroke engines — center seal failure — is finally solved\u003c\/strong\u003e with the \u003cstrong\u003eLABYRI labyrinth seal\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWith LABYRI, \u003cstrong\u003eyou no longer need to fear seal blowout\u003c\/strong\u003e.\u003cbr\u003eThis advanced design eliminates pressure loss and energy leakage, delivering:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSharper throttle response\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSmooth, resistance-free rotation\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eZero energy loss\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eExperience a dramatic improvement in pickup and engine behavior, all thanks to a precision-engineered solution trusted by professionals.\u003c\/p\u003e\n\u003ch3\u003eLABYRI — Fully Original Proprietary Design\u003c\/h3\u003e\n\u003cp\u003eThis is our \u003cstrong\u003efully original, proprietary product\u003c\/strong\u003e —\u003cbr\u003ea \u003cstrong\u003enon-contact, metal labyrinth-style crank center seal\u003c\/strong\u003e:\u003cbr\u003e\u003cstrong\u003eLABYRI\u003c\/strong\u003e by \u003cstrong\u003eINOUE BORING\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eUnlike conventional contact-type seals, \u003cstrong\u003eLABYRI is non-wearing\u003c\/strong\u003e.\u003cbr\u003eThanks to its precision-engineered \u003cstrong\u003elabyrinth structure\u003c\/strong\u003e, it eliminates friction and ensures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero wear over time\u003c\/strong\u003e — truly built to last\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero energy loss\u003c\/strong\u003e — no friction, no drag\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSmooth, resistance-free crank operation\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause it’s a non-contact metal seal, LABYRI not only improves engine responsiveness, but also delivers \u003cstrong\u003eeternal sealing performance\u003c\/strong\u003e — a revolutionary solution for 2-stroke engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProudly developed and manufactured in Japan by INOUE BORING.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Advantages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo modification required\u003c\/strong\u003e — fits directly onto the stock crankshaft without machining\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrisp, defined appearance\u003c\/strong\u003e — adds a sharp, functional aesthetic to your engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnodized finish for corrosion resistance\u003c\/strong\u003e — built to withstand harsh conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-like design\u003c\/strong\u003e — faithfully follows original shape for seamless integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision inner bore\u003c\/strong\u003e — anodizing is intentionally omitted on the inner diameter to preserve dimensional accuracy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero friction\u003c\/strong\u003e — non-contact design means no rotational drag\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully metal construction\u003c\/strong\u003e — unlike rubber seals, this will never degrade with age\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eManufactured by \u003cstrong\u003eINOUE BORING\u003c\/strong\u003e — Trusted by performance engine builders across Japan.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYear\u003c\/td\u003e\n\u003ctd\u003eMake\u003c\/td\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSubmodel\u003c\/td\u003e\n\u003ctd\u003eNotes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eall model years\u003c\/td\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eH1\u003c\/td\u003e\n\u003ctd\u003e500SS\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq-section\"\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003e▶ What is a labyrinth seal and how does it differ from a conventional seal?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eA labyrinth seal is a non-contact, metal-to-metal sealing mechanism that uses a precision-engineered maze-like structure to prevent gas leakage without physical contact. Unlike conventional rubber contact seals, LABYRI never wears out, generates zero friction, and delivers permanent sealing performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003e▶ Does LABYRI require any modification to the crankshaft?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eNo modification is required. LABYRI fits directly onto the stock Kawasaki H1 500SS crankshaft without any machining or alteration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003e▶ What performance improvements can I expect?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eBy eliminating crankcase pressure loss and energy leakage, LABYRI delivers sharper throttle response, smoother resistance-free rotation, and zero energy loss — resulting in a dramatic improvement in pickup and overall engine behavior.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003e▶ Why is the inner bore not anodized?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAnodizing is intentionally omitted on the inner diameter to preserve dimensional accuracy and ensure a precise fit on the crankshaft. The outer surfaces are fully anodized for corrosion resistance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003e▶ Can I order for a different model or custom specification?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003e\u003ca href=\"#shopify-section-template--21459829227733__rich_text_qzpdzx\"\u003ePlease fill out the form below.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eLearn More About iNOUE BORING Technology\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/icbm%E2%84%A2-blog\/what-is-icbm%E2%84%A2-technology-a-new-future-for-vintage-engines\"\u003eWhat Is ICBM™ Technology? A New Future for Vintage Engines\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/h2-cylinders-icbm%C2%AE\"\u003eH2 Cylinders ICBM® — Detailed Specifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kawasaki-h2-750ss-machined-billet-cylinder-aluminized-cylinder-liner-japan-new\"\u003eKawasaki H2 750SS Machined Billet Cylinder — View Product\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/cylinder-head-kawasaki-h1-500ss-mach-%E2%85%B2-machined-billet-inoue-boring-japan-new\"\u003eKawasaki H1 500SS Mach III Machined Billet Cylinder Head — View Product\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is a labyrinth seal and how does it differ from a conventional seal?\",\n      \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"A labyrinth seal is a non-contact, metal-to-metal sealing mechanism that uses a precision-engineered maze-like structure to prevent gas leakage without physical contact. Unlike conventional rubber contact seals, LABYRI never wears out, generates zero friction, and delivers permanent sealing performance.\" }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does LABYRI require any modification to the crankshaft?\",\n      \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"No modification is required. LABYRI fits directly onto the stock Kawasaki H1 500SS crankshaft without any machining or alteration.\" }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What performance improvements can I expect?\",\n      \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"By eliminating crankcase pressure loss and energy leakage, LABYRI delivers sharper throttle response, smoother resistance-free rotation, and zero energy loss — resulting in a dramatic improvement in pickup and overall engine behavior.\" }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why is the inner bore not anodized?\",\n      \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"Anodizing is intentionally omitted on the inner diameter to preserve dimensional accuracy and ensure a precise fit on the crankshaft. The outer surfaces are fully anodized for corrosion resistance.\" }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I order for a different model or custom specification?\",\n      \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"Please fill out the form on the product page for inquiries about other models or custom specifications.\" }\n    }\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e","brand":"iNOUE BORING","offers":[{"title":"Default Title","offer_id":51626647290069,"sku":null,"price":409.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/2502\/7541\/files\/Kawasaki_H1_500SS_LABYRI_crank_center_labyrinth_seal_iNOUE_BORING_Japan.jpg?v=1777184715","url":"https:\/\/inoueboring.com\/products\/kawasaki-h1-500ss-crank-center-labyrinth-seal-labyri","provider":"iNOUE BORING","version":"1.0","type":"link"}