{"product_id":"royal-enfield-888149-chain-sprocket-kit-thunderbird-500-rumbler-500","title":"Royal Enfield Chain \u0026 Sprocket Kit for Thunderbird 500 \/ Thunderbird 500X \/ Rumbler 500 – 888149","description":"\u003ch2\u003eRoyal Enfield Chain \u0026amp; Sprocket Kit for Thunderbird 500 \/ Thunderbird 500X \/ Rumbler 500 – 888149\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e888149\u003c\/strong\u003e is a genuine Royal Enfield \u003cstrong\u003eChain \u0026amp; Sprocket Kit - TB 500CC\u003c\/strong\u003e. Multiple public OEM-style and seller sources identify this exact part number with the same description, which makes the product identity clear and consistent. Public parts sources list \u003cstrong\u003e888149\u003c\/strong\u003e as \u003cstrong\u003eChain \u0026amp; Sprocket Kit - TB 500CC\u003c\/strong\u003e, while seller references explicitly map it to \u003cstrong\u003eNTB 500\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is the correct OEM replacement when the motorcycle’s final-drive set is worn out, noisy, stretched, unevenly wearing, or due for a full chain-and-sprocket refresh. Buyers also search for this as \u003cstrong\u003eThunderbird 500 chain sprocket kit\u003c\/strong\u003e, \u003cstrong\u003eThunderbird 500 chain kit\u003c\/strong\u003e, \u003cstrong\u003eRoyal Enfield 500 chain set\u003c\/strong\u003e, \u003cstrong\u003eRumbler 500 chain sprocket kit\u003c\/strong\u003e, and \u003cstrong\u003eOEM chain sprocket kit TB 500\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe safest fitment position from the evidence gathered is \u003cstrong\u003eThunderbird 500 \/ NTB 500\u003c\/strong\u003e. There is also third-party marketplace support for \u003cstrong\u003eRumbler 500\u003c\/strong\u003e, but the most authoritative wording still centers on \u003cstrong\u003eTB 500CC \/ NTB 500\u003c\/strong\u003e. So the cleanest customer-facing listing should lead with Thunderbird 500 and mention Rumbler 500 as an additional supported buyer search term rather than over-broadening it to all 500cc Royal Enfield models.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buyers Need It\u003c\/h3\u003e\n\u003cp\u003eA chain-and-sprocket kit is one of the most important wear-item combinations in the final-drive system. When the chain stretches or the sprockets wear unevenly, riders typically replace the full set together instead of mixing old and new components.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Royal Enfield OEM chain-and-sprocket kit\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003e888149\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOfficial description: \u003cstrong\u003eChain \u0026amp; Sprocket Kit - TB 500CC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eStrongest public fitment support: \u003cstrong\u003eThunderbird 500 \/ NTB 500\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdditional buyer-search support for \u003cstrong\u003eRumbler 500\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOEM-style solution for a complete final-drive refresh\u003c\/li\u003e\n\u003cli\u003eBetter buyer outcome than trying to source chain and sprockets separately without exact OEM matching\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eVerified Compatibility\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eStatus\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThunderbird 500 \/ NTB 500\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003ctd\u003eSeller references explicitly list NTB 500 and public parts sources identify the kit as TB 500CC.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThunderbird 500X \/ Rumbler 500\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003ctd\u003eMarketplace evidence supports Thunderbird 500 Rumbler 500 wording, but this is less authoritative than TB 500CC \/ NTB 500 sources.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther Royal Enfield models\u003c\/td\u003e\n\u003ctd\u003eDo not assume\u003c\/td\u003e\n\u003ctd\u003eCurrent evidence does not strongly support broader fitment beyond the Thunderbird 500 family.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat’s in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e1 x Genuine Royal Enfield Chain \u0026amp; Sprocket Kit – 888149\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBuyer-Focused Fitment Note\u003c\/h3\u003e\n\u003cp\u003ePlease order only after confirming your motorcycle is a \u003cstrong\u003eThunderbird 500-family\u003c\/strong\u003e bike and that you need OEM part \u003cstrong\u003e888149\u003c\/strong\u003e. Do not treat this as a universal 500cc chain kit just because another Royal Enfield also uses a 500cc engine.\u003c\/p\u003e\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1. What is 888149?\u003c\/strong\u003e\u003cbr\u003eIt is the genuine Royal Enfield \u003cstrong\u003eChain \u0026amp; Sprocket Kit - TB 500CC\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Which bike can I safely buy this for?\u003c\/strong\u003e\u003cbr\u003eThe strongest public fitment support is for \u003cstrong\u003eThunderbird 500 \/ NTB 500\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Does it also fit Rumbler 500?\u003c\/strong\u003e\u003cbr\u003eThere is supporting marketplace evidence for \u003cstrong\u003eRumbler 500\u003c\/strong\u003e, but the most authoritative sources still describe it primarily as \u003cstrong\u003eTB 500CC \/ NTB 500\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. Is it OEM?\u003c\/strong\u003e\u003cbr\u003eYes, it is listed as a genuine Royal Enfield part.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. Is this just the chain?\u003c\/strong\u003e\u003cbr\u003eNo. It is sold as a \u003cstrong\u003echain \u0026amp; sprocket kit\u003c\/strong\u003e, which indicates a kit rather than a chain-only item.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. Can I fit it on another Royal Enfield 500?\u003c\/strong\u003e\u003cbr\u003eThat is not the safest claim. The strongest current evidence is for the \u003cstrong\u003eThunderbird 500 family\u003c\/strong\u003e only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7. What should I check before ordering?\u003c\/strong\u003e\u003cbr\u003eCheck your bike model, old kit application, and exact part number \u003cstrong\u003e888149\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Royal Enfield","offers":[{"title":"Default Title","offer_id":51367325827367,"sku":"888149","price":1950.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/Royal_Enfield_Chain_Sprocket_Kit_for_Thunderbird_500_Thunderbird_500X_Rumbler_500_888149.png?v=1778082303","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-888149-chain-sprocket-kit-thunderbird-500-rumbler-500","provider":"UNDER THE HOOD","version":"1.0","type":"link"}