{"product_id":"royal-enfield-521089b-rubber-strap-thunderbird-350-500","title":"Royal Enfield 521089\/B – Rubber Battery \/ Tool Strap for Thunderbird 350 \u0026 Thunderbird 500 (TBTS \u0026 NTB) – Genuine OEM","description":"\u003cp data-start=\"266\" data-end=\"600\"\u003eThe \u003cstrong data-start=\"270\" data-end=\"323\"\u003eRoyal Enfield 521089\/B – Rubber Strap Thunderbird\u003c\/strong\u003e is the \u003cstrong data-start=\"331\" data-end=\"369\"\u003egenuine OEM rubber retaining strap\u003c\/strong\u003e used on \u003cstrong data-start=\"378\" data-end=\"404\"\u003eThunderbird UCE models\u003c\/strong\u003e to secure components like the \u003cstrong data-start=\"435\" data-end=\"461\"\u003ebattery\/tool box cover\u003c\/strong\u003e on the frame. If your original strap has become hard, cracked, or snapped with age, this is the exact factory part designed to replace it.\u003c\/p\u003e\n\u003cp data-start=\"602\" data-end=\"897\"\u003eOfficial Royal Enfield price lists clearly describe \u003cstrong data-start=\"654\" data-end=\"666\"\u003e521089\/B\u003c\/strong\u003e as \u003cstrong data-start=\"670\" data-end=\"700\"\u003e“RUBBER STRAP THUNDERBIRD”\u003c\/strong\u003e under rubber components. European OEM portals (Bike-Parts-RoyalEnfield \/ Recambios) list \u003cstrong data-start=\"792\" data-end=\"831\"\u003e521089\/B – RUBBER STRAP THUNDERBIRD\u003c\/strong\u003e as a genuine part, identical to the one fitted at the factory.\u003c\/p\u003e\n\u003cp data-start=\"1249\" data-end=\"1667\"\u003eBecause this is an \u003cstrong data-start=\"1268\" data-end=\"1289\"\u003eOEM elastic strap\u003c\/strong\u003e, it has the correct \u003cstrong data-start=\"1310\" data-end=\"1349\"\u003elength, elasticity and hook profile\u003c\/strong\u003e to hold the battery\/tool cover firmly without overtension or rattles. Cheap aftermarket straps often lose elasticity quickly or don’t hook correctly, leading to loose panels or, worse, a partially unsecured battery. With 521089\/B, you restore the bike back to \u003cstrong data-start=\"1610\" data-end=\"1637\"\u003efactory-secure mounting\u003c\/strong\u003e with minimal cost and effort.\u003c\/p\u003e\n\u003chr data-start=\"1669\" data-end=\"1672\"\u003e\n\u003ch3 data-start=\"1674\" data-end=\"1690\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"1692\" data-end=\"2780\"\u003e\n\u003cli data-start=\"1692\" data-end=\"1824\"\u003e\n\u003cp data-start=\"1694\" data-end=\"1824\"\u003e\u003cstrong data-start=\"1694\" data-end=\"1724\"\u003eGenuine Royal Enfield part\u003c\/strong\u003e – part number \u003cstrong data-start=\"1739\" data-end=\"1751\"\u003e521089\/B\u003c\/strong\u003e, described in official\/price lists as \u003cstrong data-start=\"1790\" data-end=\"1820\"\u003e“RUBBER STRAP THUNDERBIRD”\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1825\" data-end=\"1970\"\u003e\n\u003cp data-start=\"1827\" data-end=\"1970\"\u003eListed by \u003cstrong data-start=\"1837\" data-end=\"1876\"\u003eBike-Parts-RoyalEnfield \/ Recambios\u003c\/strong\u003e as \u003cstrong data-start=\"1880\" data-end=\"1912\"\u003erubber strap for Thunderbird\u003c\/strong\u003e, supplied as the same strap used on the bike from new.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1971\" data-end=\"2091\"\u003e\n\u003cp data-start=\"1973\" data-end=\"2091\"\u003e\u003cstrong data-start=\"1973\" data-end=\"2026\"\u003eConfirmed compatible with TBTS, NTB 350 \u0026amp; NTB 500\u003c\/strong\u003e by Indian dealer The Spares Company (Thunderbird UCE family).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2092\" data-end=\"2228\"\u003e\n\u003cp data-start=\"2094\" data-end=\"2228\"\u003eFunctions as \u003cstrong data-start=\"2107\" data-end=\"2153\"\u003ebattery\/toolbox\/side-cover retaining strap\u003c\/strong\u003e – approx 3\" rubber strap designed to hold components securely in place.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2229\" data-end=\"2364\"\u003e\n\u003cp data-start=\"2231\" data-end=\"2364\"\u003eCorrect \u003cstrong data-start=\"2239\" data-end=\"2271\"\u003eelasticity, length and hooks\u003c\/strong\u003e to work with Thunderbird battery carrier and frame tabs; no jugaad or extra clips needed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2365\" data-end=\"2471\"\u003e\n\u003cp data-start=\"2367\" data-end=\"2471\"\u003eOfficial \u003cstrong data-start=\"2376\" data-end=\"2409\"\u003eHSN 40169990 rubber component\u003c\/strong\u003e – durable automotive-grade rubber, not cheap generic band.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2472\" data-end=\"2578\"\u003e\n\u003cp data-start=\"2474\" data-end=\"2578\"\u003eIdeal for \u003cstrong data-start=\"2484\" data-end=\"2508\"\u003eage-related failures\u003c\/strong\u003e where the old strap has gone hard\/cracked or broken during service.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2579\" data-end=\"2692\"\u003e\n\u003cp data-start=\"2581\" data-end=\"2692\"\u003eLow-cost OEM part that helps \u003cstrong data-start=\"2610\" data-end=\"2654\"\u003eprevent vibration damage or loose panels\u003c\/strong\u003e by keeping covers properly clamped.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2693\" data-end=\"2780\"\u003e\n\u003cp data-start=\"2695\" data-end=\"2780\"\u003eSupplied as a \u003cstrong data-start=\"2709\" data-end=\"2730\"\u003esingle strap (1N)\u003c\/strong\u003e – typically one required per mounting location.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2782\" data-end=\"2785\"\u003e\n\u003ch3 data-start=\"2787\" data-end=\"2852\"\u003eCompatibility Table\u003c\/h3\u003e\n\u003cdiv class=\"_tableContainer_1rjym_1\"\u003e\n\u003cdiv class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"2854\" data-end=\"3682\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"2854\" data-end=\"2976\"\u003e\n\u003ctr data-start=\"2854\" data-end=\"2976\"\u003e\n\u003cth data-start=\"2854\" data-end=\"2888\" data-col-size=\"sm\"\u003eModel\u003c\/th\u003e\n\u003cth data-start=\"2888\" data-end=\"2913\" data-col-size=\"sm\"\u003eEngine \/ Platform\u003c\/th\u003e\n\u003cth data-start=\"2913\" data-end=\"2952\" data-col-size=\"sm\"\u003eBS Stage \/ Years\u003c\/th\u003e\n\u003cth data-start=\"2952\" data-end=\"2967\" data-col-size=\"sm\"\u003eStatus\u003c\/th\u003e\n\u003cth data-start=\"2967\" data-end=\"2976\" data-col-size=\"md\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"3099\" data-end=\"3682\"\u003e\n\u003ctr data-start=\"3099\" data-end=\"3313\"\u003e\n\u003ctd data-start=\"3099\" data-end=\"3133\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"3101\" data-end=\"3127\"\u003eThunderbird 350 (TBTS)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"3133\" data-end=\"3158\" data-col-size=\"sm\"\u003e346cc UCE (TBTS)\u003c\/td\u003e\n\u003ctd data-start=\"3158\" data-end=\"3197\" data-col-size=\"sm\"\u003eBS3 UCE (≈2009–2014)\u003c\/td\u003e\n\u003ctd data-start=\"3197\" data-end=\"3211\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003ctd data-start=\"3211\" data-end=\"3313\" data-col-size=\"md\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3314\" data-end=\"3487\"\u003e\n\u003ctd data-start=\"3314\" data-end=\"3348\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"3316\" data-end=\"3345\"\u003eThunderbird 350 (NTB 350)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"3348\" data-end=\"3373\" data-col-size=\"sm\"\u003e346cc UCE (NTB)\u003c\/td\u003e\n\u003ctd data-start=\"3373\" data-end=\"3411\" data-col-size=\"sm\"\u003eBS4 \/ ABS (≈2015–2019)\u003c\/td\u003e\n\u003ctd data-start=\"3411\" data-end=\"3425\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003ctd data-start=\"3425\" data-end=\"3487\" data-col-size=\"md\"\u003eSame listing marks \u003cstrong data-start=\"3446\" data-end=\"3457\"\u003eNTB 350\u003c\/strong\u003e along with TBTS \u0026amp; NTB 500.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3488\" data-end=\"3682\"\u003e\n\u003ctd data-start=\"3488\" data-end=\"3522\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"3490\" data-end=\"3519\"\u003eThunderbird 500 (NTB 500)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"3522\" data-end=\"3547\" data-col-size=\"sm\"\u003e499cc UCE (NTB 500)\u003c\/td\u003e\n\u003ctd data-start=\"3547\" data-end=\"3585\" data-col-size=\"sm\"\u003eBS3–BS4 (Thunderbird 500 UCE era)\u003c\/td\u003e\n\u003ctd data-start=\"3585\" data-end=\"3599\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003ctd data-start=\"3599\" data-end=\"3682\" data-col-size=\"md\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cblockquote data-start=\"3684\" data-end=\"4103\"\u003e\n\u003cp data-start=\"3686\" data-end=\"4103\"\u003e\u003cspan style=\"color: rgb(253, 27, 27);\"\u003e\u003cstrong\u003eCHECK PART NUMBER BEFORE PURCHASE \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr data-start=\"4105\" data-end=\"4108\"\u003e\n\u003ch3 data-start=\"4110\" data-end=\"4134\"\u003eVariants \/ Revisions\u003c\/h3\u003e\n\u003cp data-start=\"4136\" data-end=\"4156\"\u003eThis listing covers:\u003c\/p\u003e\n\u003cul data-start=\"4158\" data-end=\"4282\"\u003e\n\u003cli data-start=\"4158\" data-end=\"4187\"\u003e\n\u003cp data-start=\"4160\" data-end=\"4187\"\u003e\u003cstrong data-start=\"4160\" data-end=\"4176\"\u003ePart Number:\u003c\/strong\u003e 521089\/B\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4188\" data-end=\"4256\"\u003e\n\u003cp data-start=\"4190\" data-end=\"4256\"\u003e\u003cstrong data-start=\"4190\" data-end=\"4206\"\u003eDescription:\u003c\/strong\u003e Rubber Strap – Thunderbird (Battery\/Tool Strap)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4257\" data-end=\"4282\"\u003e\n\u003cp data-start=\"4259\" data-end=\"4282\"\u003e\u003cstrong data-start=\"4259\" data-end=\"4272\"\u003eQuantity:\u003c\/strong\u003e 1 piece\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4284\" data-end=\"4303\"\u003eOther related refs:\u003c\/p\u003e\n\u003cul data-start=\"4305\" data-end=\"4483\"\u003e\n\u003cli data-start=\"4305\" data-end=\"4483\"\u003e\n\u003cp data-start=\"4307\" data-end=\"4483\"\u003eSome catalogues mention \u003cstrong data-start=\"4331\" data-end=\"4343\"\u003e521089\/A\u003c\/strong\u003e as an earlier revision of the same \u003cstrong data-start=\"4379\" data-end=\"4399\"\u003e“Strap – Rubber”\u003c\/strong\u003e for Thunderbird; \/B is the updated suffix but still serves the same application.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4485\" data-end=\"4593\"\u003eYou can mention in your Shopify description (short note) that 521089\/B supersedes 521089\/A where applicable.\u003c\/p\u003e\n\u003chr data-start=\"4595\" data-end=\"4598\"\u003e\n\u003ch3 data-start=\"4600\" data-end=\"4608\"\u003eFAQs\u003c\/h3\u003e\n\u003cp data-start=\"4610\" data-end=\"4993\"\u003e\u003cstrong data-start=\"4610\" data-end=\"4671\"\u003eQ1. What exactly is Royal Enfield part 521089\/B used for?\u003c\/strong\u003e\u003cbr data-start=\"4671\" data-end=\"4674\"\u003e521089\/B is a \u003cstrong data-start=\"4688\" data-end=\"4714\"\u003erubber retaining strap\u003c\/strong\u003e used on Thunderbird models to \u003cstrong data-start=\"4745\" data-end=\"4800\"\u003esecure the battery\/tool cover or similar components\u003c\/strong\u003e to the frame. Official RE price lists and parts portals describe it simply as \u003cstrong data-start=\"4879\" data-end=\"4909\"\u003e“RUBBER STRAP THUNDERBIRD”.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"4995\" data-end=\"4998\"\u003e\n\u003cp data-start=\"5000\" data-end=\"5329\"\u003e\u003cstrong data-start=\"5000\" data-end=\"5049\"\u003eQ2. Which bikes does 521089\/B officially fit?\u003c\/strong\u003e\u003cbr data-start=\"5049\" data-end=\"5052\"\u003eIndian dealer The Spares Company lists \u003cstrong data-start=\"5091\" data-end=\"5126\"\u003e521089 Rubber Strap Thunderbird\u003c\/strong\u003e with confirmed fitment for \u003cstrong data-start=\"5154\" data-end=\"5183\"\u003eTBTS, NTB 350 and NTB 500\u003c\/strong\u003e, i.e., the UCE Thunderbird 350 \u0026amp; 500 family. We therefore treat it as \u003cstrong data-start=\"5256\" data-end=\"5328\"\u003econfirmed for Thunderbird 350 (TBTS \u0026amp; NTB) and Thunderbird 500 (NTB)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"5331\" data-end=\"5334\"\u003e\n\u003cp data-start=\"5336\" data-end=\"5720\"\u003e\u003cstrong data-start=\"5336\" data-end=\"5395\"\u003eQ3. Can I use this strap on other Royal Enfield models?\u003c\/strong\u003e\u003cbr data-start=\"5395\" data-end=\"5398\"\u003eHitchcocks notes that this strap can be used on \u003cstrong data-start=\"5446\" data-end=\"5476\"\u003e“virtually any motorcycle”\u003c\/strong\u003e as a generic battery\/tool strap. However, outside of \u003cstrong data-start=\"5532\" data-end=\"5559\"\u003eThunderbird 350\/500 UCE\u003c\/strong\u003e, we \u003cstrong data-start=\"5564\" data-end=\"5594\"\u003ecannot guarantee exact fit\u003c\/strong\u003e (length\/hook points) without checking your bike. If using on other models, treat it as a universal strap and verify visually.\u003c\/p\u003e\n\u003chr data-start=\"5722\" data-end=\"5725\"\u003e\n\u003cp data-start=\"5727\" data-end=\"6013\"\u003e\u003cstrong data-start=\"5727\" data-end=\"5770\"\u003eQ4. How many straps do I need to order?\u003c\/strong\u003e\u003cbr data-start=\"5770\" data-end=\"5773\"\u003eMost Thunderbird applications use \u003cstrong data-start=\"5807\" data-end=\"5852\"\u003eone strap per battery\/tool cover location\u003c\/strong\u003e. This part is sold \u003cstrong data-start=\"5872\" data-end=\"5890\"\u003eper piece (1N)\u003c\/strong\u003e, so order 1 if you’re replacing a single broken strap, or more if you’re refreshing multiple locations or keeping a spare.\u003c\/p\u003e\n\u003chr data-start=\"6015\" data-end=\"6018\"\u003e\n\u003cp data-start=\"6020\" data-end=\"6331\"\u003e\u003cstrong data-start=\"6020\" data-end=\"6082\"\u003eQ5. Is this different from local aftermarket rubber bands?\u003c\/strong\u003e\u003cbr data-start=\"6082\" data-end=\"6085\"\u003eYes. 521089\/B is an OEM strap with \u003cstrong data-start=\"6120\" data-end=\"6165\"\u003ecorrect rubber hardness, length and hooks\u003c\/strong\u003e, designed for the Thunderbird frame and battery carrier. Cheap generic straps can be too long\/short or lose elasticity quickly, leading to loose covers or rattles.\u003c\/p\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50726347735335,"sku":null,"price":34.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/Genuine_521089_rubber_strap_for_Thunderbird_350_500_TBTS_NTB.png?v=1763903181","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-521089b-rubber-strap-thunderbird-350-500","provider":"UNDER THE HOOD","version":"1.0","type":"link"}