{"product_id":"royal-enfield-handlebar-damper-weight-nickel-plated-580404-a-thunderbird-machismo","title":"Royal Enfield Nickel Plated Handlebar Damper Weight 580404\/A for Thunderbird 350\/500 \u0026 Machismo","description":"\u003ch1\u003e\u003c\/h1\u003e\n\u003cp\u003eRoyal Enfield \u003cstrong\u003e580404\/A Damper Weight – Nickel Plated\u003c\/strong\u003e is a genuine handlebar-end damper weight used on compatible older Royal Enfield cruiser and Bullet-family motorcycles where this exact part number is specified. It is commonly searched as a \u003cstrong\u003eRoyal Enfield handlebar damper weight, bar end weight, handle weight, chrome handle weight, nickel plated damper weight\u003c\/strong\u003e or \u003cstrong\u003eThunderbird 350 handle weight\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSOLD AS A SET OF 2 PCS\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis damper weight fits at the handlebar end area and helps restore the original factory handlebar-end setup. Handlebar weights are small but useful parts: they complete the handlebar finish, help add mass at the bar end, and can reduce the unfinished look caused by missing or damaged end weights. A missing, scratched, rusted or mismatched handlebar weight is especially noticeable on chrome \/ nickel-finish Royal Enfield models.\u003c\/p\u003e\n\u003cp\u003ePublic Royal Enfield parts references identify \u003cstrong\u003e580404\/A\u003c\/strong\u003e as \u003cstrong\u003eDamper Weight – Nickel Plated\u003c\/strong\u003e. The Spares Company lists this part for \u003cstrong\u003eTBTS, Thunderbird 350, Thunderbird 500, Machismo A350 (1999)\u003c\/strong\u003e and \u003cstrong\u003eMachismo A500 (2009)\u003c\/strong\u003e. Other Indian seller references describe 580404\/A as a chrome-plated handlebar damper weight for Thunderbird 350 \/ Thunderbird 500 \/ Rumbler 500 applications.\u003c\/p\u003e\n\u003cp\u003eUse this genuine Royal Enfield part only where \u003cstrong\u003e580404\/A\u003c\/strong\u003e or \u003cstrong\u003e580404\u003c\/strong\u003e is specified in the handlebar \/ control parts diagram. This is not a universal bar-end slider, not a crash protector, not a handlebar grip, not a mirror adapter, not a pair unless specifically selected, and not a handlebar assembly.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Royal Enfield spare part\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003e580404\/A\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart family reference: \u003cstrong\u003e580404\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFactory description: \u003cstrong\u003eDamper Weight – Nickel Plated\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAlso searched as handlebar damper weight, handle weight, bar end weight and chrome handle weight\u003c\/li\u003e\n\u003cli\u003eNickel \/ chrome-style finish for catalogue-matched older Royal Enfield applications\u003c\/li\u003e\n\u003cli\u003eUseful for replacing missing, scratched, rusted, dented or mismatched handlebar-end weights\u003c\/li\u003e\n\u003cli\u003eHelps restore original handlebar-end appearance and factory-style finish\u003c\/li\u003e\n\u003cli\u003eOE-style fitment where the parts catalogue specifies 580404\/A\u003c\/li\u003e\n\u003cli\u003eBetter fitment confidence than universal bar-end weights or generic aftermarket sliders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuyer Search Names \/ Internal Search Keywords\u003c\/h2\u003e\n\u003cp\u003eCustomers may also search this part as: \u003cstrong\u003eRoyal Enfield 580404\/A, 580404A, 580404 damper weight, Thunderbird 350 handle weight, Thunderbird 500 handlebar weight, TBTS handlebar damper, Machismo handle weight, Royal Enfield bar end weight, nickel plated handle weight, chrome handle weight Royal Enfield, Rumbler 500 handle weight, Royal Enfield handlebar end weight.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eVerified Compatibility \/ Catalogue-Matched Usage\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel \/ Platform\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eFitment Status\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eTBTS \/ Thunderbird TwinSpark references\u003c\/td\u003e\n\u003ctd\u003eHandlebar damper weight \/ handlebar-end weight\u003c\/td\u003e\n\u003ctd\u003eUse where \u003cstrong\u003e580404\/A\u003c\/strong\u003e is specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eThunderbird 350\u003c\/td\u003e\n\u003ctd\u003eHandlebar damper weight \/ handlebar-end weight\u003c\/td\u003e\n\u003ctd\u003eListed by seller references; confirm by part number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eThunderbird 500\u003c\/td\u003e\n\u003ctd\u003eHandlebar damper weight \/ handlebar-end weight\u003c\/td\u003e\n\u003ctd\u003eListed by seller references; confirm by part number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eMachismo A350 (1999 reference)\u003c\/td\u003e\n\u003ctd\u003eHandlebar damper weight\u003c\/td\u003e\n\u003ctd\u003eListed by seller references; confirm by part number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eMachismo A500 (2009 reference)\u003c\/td\u003e\n\u003ctd\u003eHandlebar damper weight\u003c\/td\u003e\n\u003ctd\u003eListed by seller references; confirm by part number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003ctd\u003eRumbler 500 references\u003c\/td\u003e\n\u003ctd\u003eHandlebar-end damper weight\u003c\/td\u003e\n\u003ctd\u003eMarket references list usage; confirm exact handlebar setup before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eImportant Fitment Note\u003c\/h2\u003e\n\u003cp\u003eThis listing is for the \u003cstrong\u003edamper weight \/ handlebar-end weight only\u003c\/strong\u003e. It is \u003cstrong\u003enot\u003c\/strong\u003e a complete handlebar assembly, not a handlebar grip, not a throttle tube, not a bar-end mirror adapter, not a crash protector, not a handlebar switch, not a mirror, and not a pair unless a pair option is specifically selected.\u003c\/p\u003e\n\u003cp\u003eDo not order only by visual appearance. Handlebar-end weights can differ by bolt length, inner handlebar thread, weight shape, finish, handlebar type, grip setup and model generation. Match \u003cstrong\u003e580404\/A\u003c\/strong\u003e in the exact parts diagram or compare your old part before purchase.\u003c\/p\u003e\n\u003cp\u003eDo \u003cstrong\u003enot\u003c\/strong\u003e order for Classic 350 Reborn, New Bullet 350 J-Series, Meteor 350, Hunter 350, Himalayan 411, Scram 411, Himalayan 450, Guerrilla 450, Interceptor 650, Continental GT 650, Super Meteor 650, Shotgun 650, Bear 650, Classic 650 or other newer Royal Enfield models unless the exact parts catalogue confirms \u003cstrong\u003e580404\/A\u003c\/strong\u003e for that motorcycle.\u003c\/p\u003e\n\u003ch2\u003eSingle Piece vs Pair Note\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSOLD AS A SET OF 2 PCS\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eWhen Should This Part Be Replaced?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHandlebar-end damper weight is missing\u003c\/li\u003e\n\u003cli\u003eExisting weight is scratched, rusted, dull, bent or dented\u003c\/li\u003e\n\u003cli\u003eOne side has a mismatched aftermarket bar-end weight\u003c\/li\u003e\n\u003cli\u003eHandlebar end looks unfinished after grip or handlebar work\u003c\/li\u003e\n\u003cli\u003eMotorcycle is being restored to original Thunderbird \/ Machismo-style finish\u003c\/li\u003e\n\u003cli\u003eOld bolt or handlebar-end fitment is damaged and the weight no longer sits properly\u003c\/li\u003e\n\u003cli\u003eWorkshop needs genuine Royal Enfield handlebar-end hardware instead of universal weights\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy This Part Matters\u003c\/h2\u003e\n\u003cp\u003eA handlebar damper weight is both a functional and cosmetic end component. It completes the handlebar end, helps maintain the intended weight at the bar edge, and keeps the motorcycle looking original. On older Thunderbird and Machismo models, the nickel\/chrome-style handlebar-end finish is highly visible, so a missing or cheap universal replacement looks immediately out of place.\u003c\/p\u003e\n\u003ch2\u003eRecommended Related Parts to Check\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHandlebar end screw \/ counter weight screw if used with the assembly\u003c\/li\u003e\n\u003cli\u003eHandlebar grip condition\u003c\/li\u003e\n\u003cli\u003eHandlebar internal thread or insert condition\u003c\/li\u003e\n\u003cli\u003eOpposite-side damper weight finish and shape\u003c\/li\u003e\n\u003cli\u003eThrottle tube movement on RH side after installation\u003c\/li\u003e\n\u003cli\u003eRear view mirror and switchgear clearance near the grip area\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e2x Royal Enfield Damper Weight – Nickel Plated – 580404\/A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHandlebar, grip, screw, washer, mirror, throttle tube, switchgear and other handlebar parts are included only if specifically supplied or shown separately.\u003c\/p\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the handlebar end thread \/ fitment before installation.\u003c\/li\u003e\n\u003cli\u003eCompare the new damper weight with the old one before fitting.\u003c\/li\u003e\n\u003cli\u003eDo not force-fit if the bolt or thread does not engage smoothly.\u003c\/li\u003e\n\u003cli\u003eUse correct fastener and washer if required by the parts diagram.\u003c\/li\u003e\n\u003cli\u003eCheck throttle movement after fitting on the right-hand side.\u003c\/li\u003e\n\u003cli\u003eEnsure the weight is tight and does not rotate or rattle.\u003c\/li\u003e\n\u003cli\u003eUse thread-safe installation practice if the service procedure requires it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReturn-Prevention Note\u003c\/h2\u003e\n\u003cp\u003eOrder only if your motorcycle requires \u003cstrong\u003e580404\/A Damper Weight – Nickel Plated\u003c\/strong\u003e. This is a part-number-specific Royal Enfield handlebar-end weight and should not be treated as a universal bar-end slider or handlebar accessory for all models.\u003c\/p\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003ch3\u003eWhat is Royal Enfield 580404\/A?\u003c\/h3\u003e\n\u003cp\u003e580404\/A is a genuine Royal Enfield \u003cstrong\u003eDamper Weight – Nickel Plated\u003c\/strong\u003e, commonly called a handlebar damper weight or bar-end weight.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Thunderbird 350?\u003c\/h3\u003e\n\u003cp\u003eYes, The Spares Company lists 580404\/A for Thunderbird 350. Confirm your handlebar-end setup and part number before ordering.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Thunderbird 500?\u003c\/h3\u003e\n\u003cp\u003eYes, seller references list it for Thunderbird 500 applications where this damper weight is specified.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Machismo?\u003c\/h3\u003e\n\u003cp\u003ePlease check part number.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Rumbler 500?\u003c\/h3\u003e\n\u003cp\u003eConfirm the exact handlebar-end design before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this chrome or nickel plated?\u003c\/h3\u003e\n\u003cp\u003eThe factory description is \u003cstrong\u003eNickel Plated\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs this sold as one piece or pair?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSOLD AS A SET OF 2 PCS\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eDoes it include the screw?\u003c\/h3\u003e\n\u003cp\u003eNo\u003c\/p\u003e\n\u003ch3\u003eCan I use this on Classic 350 Reborn or Meteor 350?\u003c\/h3\u003e\n\u003cp\u003eDo not order for newer Royal Enfield models unless the exact parts catalogue confirms 580404\/A. Newer models can use different bar-end weights and hardware.\u003c\/p\u003e\n\u003ch3\u003eIs this a genuine Royal Enfield part?\u003c\/h3\u003e\n\u003cp\u003eYes. Bike-Parts Royal Enfield identifies 580404\/A as a genuine Royal Enfield spare part.\u003c\/p\u003e\n\u003ch2\u003e\u003c\/h2\u003e","brand":"Royal Enfield","offers":[{"title":"Default Title","offer_id":51447208706343,"sku":"580404\/A","price":315.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/917A80DF-5913-434C-86AC-A4A0A19571C1.jpg?v=1780145599","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-handlebar-damper-weight-nickel-plated-580404-a-thunderbird-machismo","provider":"UNDER THE HOOD","version":"1.0","type":"link"}