{"product_id":"ngage-b8rii-8-spark-plug-jawa-yezdi","title":"NGage Double Iridium Spark Plug (B8RII-8) – Jawa 42, Bobber 42, 350, 42 FJ \u0026 Yezdi Roadster, Adventure, Scrambler","description":"\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6989acae-9f18-83ab-9f8d-9f71bc6b6438-9\" data-testid=\"conversation-turn-116\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"559fbabe-a15d-493d-8aa0-39111b3dd074\" dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-2\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003ch2 data-start=\"0\" data-end=\"94\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eNGage B8RII-8 Double Iridium Spark Plug for Jawa \u0026amp; Yezdi Motorcycles (BS4 \/ BS6 Compatible)\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003cp data-end=\"830\" data-start=\"460\"\u003eThe \u003cstrong data-end=\"507\" data-start=\"464\"\u003eNGage B8RII-8 Double Iridium Spark Plug\u003c\/strong\u003e is a precision ignition component developed for select Jawa and Yezdi motorcycles built on modern, fuel-injected single-cylinder platforms. Manufactured in Japan, this spark plug is part of NGage’s Double Iridium series and is specified for use in both \u003cstrong data-end=\"798\" data-start=\"761\"\u003eBS4 and BS6 compliant motorcycles\u003c\/strong\u003e, as stated by the manufacturer.\u003c\/p\u003e\n\u003cp data-end=\"1088\" data-start=\"832\"\u003eThis listing focuses exclusively on its application for the Jawa and Yezdi models listed in NGage’s official compatibility chart for part number \u003cstrong data-end=\"988\" data-start=\"977\"\u003eB8RII-8\u003c\/strong\u003e. It is intended as a \u003cstrong data-end=\"1032\" data-start=\"1010\"\u003edirect replacement\u003c\/strong\u003e spark plug for these motorcycles, without modification.\u003c\/p\u003e\n\u003chr data-end=\"1093\" data-start=\"1090\"\u003e\n\u003ch3 data-end=\"1136\" data-start=\"1095\"\u003eDesigned for Jawa \u0026amp; Yezdi Motorcycles\u003c\/h3\u003e\n\u003cp data-end=\"1274\" data-start=\"1138\"\u003eNGage specifies the B8RII-8 spark plug for a defined group of Jawa and Yezdi motorcycles that share common ignition system requirements.\u003c\/p\u003e\n\u003cp data-end=\"1353\" data-start=\"1276\"\u003eThe following models are listed by NGage for use with the B8RII-8 spark plug:\u003c\/p\u003e\n\u003cp data-end=\"1363\" data-start=\"1355\"\u003e\u003cstrong data-end=\"1363\" data-start=\"1355\"\u003eJawa\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1429\" data-start=\"1364\"\u003e\n\u003cli data-end=\"1382\" data-start=\"1364\"\u003e\n\u003cp data-end=\"1382\" data-start=\"1366\"\u003eJawa Forty Two\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1401\" data-start=\"1383\"\u003e\n\u003cp data-end=\"1401\" data-start=\"1385\"\u003eJawa Bobber 42\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1414\" data-start=\"1402\"\u003e\n\u003cp data-end=\"1414\" data-start=\"1404\"\u003eJawa 350\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1429\" data-start=\"1415\"\u003e\n\u003cp data-end=\"1429\" data-start=\"1417\"\u003eJawa 42 FJ\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1440\" data-start=\"1431\"\u003e\u003cstrong data-end=\"1440\" data-start=\"1431\"\u003eYezdi\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1499\" data-start=\"1441\"\u003e\n\u003cli data-end=\"1459\" data-start=\"1441\"\u003e\n\u003cp data-end=\"1459\" data-start=\"1443\"\u003eYezdi Roadster\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1479\" data-start=\"1460\"\u003e\n\u003cp data-end=\"1479\" data-start=\"1462\"\u003eYezdi Adventure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1499\" data-start=\"1480\"\u003e\n\u003cp data-end=\"1499\" data-start=\"1482\"\u003eYezdi Scrambler\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1805\" data-start=\"1501\"\u003eThese motorcycles represent modern, liquid-cooled and air-cooled single-cylinder platforms developed for contemporary combustion and emission standards. NGage lists the same B8RII-8 specification across all of these models, indicating alignment with their ignition system design and operating parameters.\u003c\/p\u003e\n\u003cp data-end=\"2101\" data-start=\"1807\"\u003eFor these motorcycles, the B8RII-8 is intended to function as a \u003cstrong data-end=\"1900\" data-start=\"1871\"\u003elike-for-like replacement\u003c\/strong\u003e for the factory-specified spark plug type. It is not positioned as a tuning component or a modification-driven upgrade, but as a specification-correct ignition part for routine service or replacement.\u003c\/p\u003e\n\u003chr data-end=\"2106\" data-start=\"2103\"\u003e\n\u003ch3 data-end=\"2150\" data-start=\"2108\"\u003eDouble Iridium Spark Plug Construction\u003c\/h3\u003e\n\u003cp data-end=\"2304\" data-start=\"2152\"\u003eNGage classifies the B8RII-8 as a \u003cstrong data-end=\"2215\" data-start=\"2186\"\u003eDouble Iridium spark plug\u003c\/strong\u003e, meaning iridium material is used on both the center electrode and the ground electrode.\u003c\/p\u003e\n\u003cp data-end=\"2598\" data-start=\"2306\"\u003eIridium is used in modern spark plug construction due to its high melting point and resistance to electrode erosion during repeated ignition cycles. This construction approach is commonly applied in motorcycles with high-energy ignition systems and tightly controlled combustion environments.\u003c\/p\u003e\n\u003cp data-end=\"2882\" data-start=\"2600\"\u003eThe double-iridium configuration is intended to maintain consistent electrode geometry over extended operating periods under normal riding conditions. NGage does not publish electrode dimensions, spark-gap values, heat-range explanations, or service-interval figures for this model.\u003c\/p\u003e\n\u003chr data-end=\"2887\" data-start=\"2884\"\u003e\n\u003ch3 data-end=\"2918\" data-start=\"2889\"\u003eBS4 and BS6 Compatibility\u003c\/h3\u003e\n\u003cp data-end=\"3196\" data-start=\"2920\"\u003eNGage specifies that the B8RII-8 spark plug is compatible with \u003cstrong data-end=\"3012\" data-start=\"2983\"\u003eboth BS4 and BS6 vehicles\u003c\/strong\u003e. This makes it suitable for use across production years that fall before and after the BS6 emission-standard transition, provided the motorcycle is included in the compatibility list.\u003c\/p\u003e\n\u003cp data-end=\"3362\" data-start=\"3198\"\u003eFor the Jawa and Yezdi motorcycles listed above, this ensures suitability across emission-compliant variants without requiring a change in spark plug specification.\u003c\/p\u003e\n\u003cp data-end=\"3447\" data-start=\"3364\"\u003eNo emission-reduction, fuel-efficiency, or tuning claims are made for this product.\u003c\/p\u003e\n\u003chr data-end=\"3452\" data-start=\"3449\"\u003e\n\u003ch3 data-end=\"3478\" data-start=\"3454\"\u003eManufacturing Origin\u003c\/h3\u003e\n\u003cp data-end=\"3552\" data-start=\"3480\"\u003eThe B8RII-8 spark plug is \u003cstrong data-end=\"3531\" data-start=\"3506\"\u003emanufactured in Japan\u003c\/strong\u003e, as stated by NGage.\u003c\/p\u003e\n\u003cp data-end=\"3762\" data-start=\"3554\"\u003eNGage does not publish further information regarding production processes, certifications, or testing standards for this model. The country of manufacture is provided here as factual product information only.\u003c\/p\u003e\n\u003chr data-end=\"3767\" data-start=\"3764\"\u003e\n\u003ch3 data-end=\"3785\" data-start=\"3769\"\u003eIntended Use\u003c\/h3\u003e\n\u003cp data-end=\"4071\" data-start=\"3787\"\u003eThe NGage B8RII-8 is intended for \u003cstrong data-end=\"3844\" data-start=\"3821\"\u003eroutine replacement\u003c\/strong\u003e during scheduled maintenance or spark-plug service intervals recommended by the motorcycle manufacturer. It is suitable for everyday road use on the Jawa and Yezdi motorcycles listed below within standard operating conditions.\u003c\/p\u003e\n\u003cp data-end=\"4182\" data-start=\"4073\"\u003eThis spark plug is not positioned by NGage as a racing-only, track-specific, or specialized tuning component.\u003c\/p\u003e\n\u003chr data-end=\"4187\" data-start=\"4184\"\u003e\n\u003ch3 data-end=\"4209\" data-start=\"4189\"\u003eFitment Accuracy\u003c\/h3\u003e\n\u003cp data-end=\"4299\" data-start=\"4211\"\u003eCorrect spark plug selection is critical for engine operation and long-term reliability.\u003c\/p\u003e\n\u003cp data-end=\"4449\" data-start=\"4301\"\u003eThe B8RII-8 should be installed \u003cstrong data-end=\"4341\" data-start=\"4333\"\u003eonly\u003c\/strong\u003e on motorcycles listed in the compatibility section below. Use on non-listed motorcycles is not recommended.\u003c\/p\u003e\n\u003chr data-end=\"4454\" data-start=\"4451\"\u003e\n\u003ch2 data-end=\"4472\" data-start=\"4456\"\u003eCompatibility\u003c\/h2\u003e\n\u003cp data-end=\"4544\" data-start=\"4474\"\u003eAs per NGage official compatibility chart for part number \u003cstrong data-end=\"4543\" data-start=\"4532\"\u003eB8RII-8\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cp data-end=\"4566\" data-start=\"4546\"\u003e\u003cstrong data-end=\"4566\" data-start=\"4546\"\u003eJawa Motorcycles\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"4646\" data-start=\"4567\"\u003e\n\u003cli data-end=\"4589\" data-start=\"4567\"\u003e\n\u003cp data-end=\"4589\" data-start=\"4569\"\u003eJawa \u003cstrong data-end=\"4587\" data-start=\"4574\"\u003eForty Two\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4612\" data-start=\"4590\"\u003e\n\u003cp data-end=\"4612\" data-start=\"4592\"\u003eJawa \u003cstrong data-end=\"4610\" data-start=\"4597\"\u003eBobber 42\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4629\" data-start=\"4613\"\u003e\n\u003cp data-end=\"4629\" data-start=\"4615\"\u003eJawa \u003cstrong data-end=\"4627\" data-start=\"4620\"\u003e350\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4646\" data-start=\"4630\"\u003e\n\u003cp data-end=\"4646\" data-start=\"4632\"\u003eJawa \u003cstrong data-end=\"4646\" data-start=\"4637\"\u003e42 FJ\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"4669\" data-start=\"4648\"\u003e\u003cstrong data-end=\"4669\" data-start=\"4648\"\u003eYezdi Motorcycles\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"4738\" data-start=\"4670\"\u003e\n\u003cli data-end=\"4692\" data-start=\"4670\"\u003e\n\u003cp data-end=\"4692\" data-start=\"4672\"\u003eYezdi \u003cstrong data-end=\"4690\" data-start=\"4678\"\u003eRoadster\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4716\" data-start=\"4693\"\u003e\n\u003cp data-end=\"4716\" data-start=\"4695\"\u003eYezdi \u003cstrong data-end=\"4714\" data-start=\"4701\"\u003eAdventure\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4738\" data-start=\"4717\"\u003e\n\u003cp data-end=\"4738\" data-start=\"4719\"\u003eYezdi \u003cstrong data-end=\"4738\" data-start=\"4725\"\u003eScrambler\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"4743\" data-start=\"4740\"\u003e\n\u003ch2 data-end=\"4767\" data-start=\"4745\"\u003eVariant Explanation\u003c\/h2\u003e\n\u003cp data-end=\"4838\" data-start=\"4769\"\u003eThis listing is for \u003cstrong data-end=\"4832\" data-start=\"4789\"\u003eNGage B8RII-8 Double Iridium Spark Plug\u003c\/strong\u003e only.\u003c\/p\u003e\n\u003cul data-end=\"5081\" data-start=\"4840\"\u003e\n\u003cli data-end=\"4926\" data-start=\"4840\"\u003e\n\u003cp data-end=\"4926\" data-start=\"4842\"\u003e“Double Iridium” refers to iridium usage on both the center and ground electrodes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5003\" data-start=\"4927\"\u003e\n\u003cp data-end=\"5003\" data-start=\"4929\"\u003eThis part number represents a single manufacturer-defined specification.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5081\" data-start=\"5004\"\u003e\n\u003cp data-end=\"5081\" data-start=\"5006\"\u003eNo alternate heat ranges or material variants are included in this listing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"5086\" data-start=\"5083\"\u003e\n\u003ch2 data-end=\"5126\" data-start=\"5088\"\u003eSpecifications \u003c\/h2\u003e\n\u003cul data-end=\"5315\" data-start=\"5128\"\u003e\n\u003cli data-end=\"5144\" data-start=\"5128\"\u003e\n\u003cp data-end=\"5144\" data-start=\"5130\"\u003eBrand: NGage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5169\" data-start=\"5145\"\u003e\n\u003cp data-end=\"5169\" data-start=\"5147\"\u003ePart Number: B8RII-8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5205\" data-start=\"5170\"\u003e\n\u003cp data-end=\"5205\" data-start=\"5172\"\u003eSpark Plug Type: Double Iridium\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5242\" data-start=\"5206\"\u003e\n\u003cp data-end=\"5242\" data-start=\"5208\"\u003eVehicle Compatibility: BS4 \u0026amp; BS6\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5276\" data-start=\"5243\"\u003e\n\u003cp data-end=\"5276\" data-start=\"5245\"\u003eCountry of Manufacture: Japan\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5315\" data-start=\"5277\"\u003e\n\u003cp data-end=\"5315\" data-start=\"5279\"\u003eApplication: Motorcycle spark plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"5320\" data-start=\"5317\"\u003e\n\u003ch2 data-end=\"5351\" data-start=\"5322\"\u003eInstallation \/ Usage Notes\u003c\/h2\u003e\n\u003cul data-end=\"5590\" data-start=\"5353\"\u003e\n\u003cli data-end=\"5436\" data-start=\"5353\"\u003e\n\u003cp data-end=\"5436\" data-start=\"5355\"\u003eInstall only on Jawa and Yezdi motorcycles listed in the compatibility section.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5562\" data-start=\"5437\"\u003e\n\u003cp data-end=\"5562\" data-start=\"5439\"\u003eFollow the motorcycle manufacturer’s service-manual torque specifications and standard spark-plug installation procedure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"5590\" data-start=\"5563\"\u003e\n\u003cp data-end=\"5590\" data-start=\"5565\"\u003eInstall on a cold engine.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ngage","offers":[{"title":"Default Title","offer_id":52928188055917,"sku":"NGAGE-SP-B8RII-8-JAWA\/YEZDI","price":899.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/0549\/8989\/files\/NGage-Double-Iridium-Spark-Plugs-for-Royal-Enfield-Reborn-Classic-350-DH7RTII-8-2_78fe1a78-07e6-44aa-bd38-95f2c4fa1155.webp?v=1768807104","url":"https:\/\/rawtorque.in\/products\/ngage-b8rii-8-spark-plug-jawa-yezdi","provider":"Rawtorque","version":"1.0","type":"link"}