{"product_id":"rolon-kit-bsor-139-chain-sprocket-kit-pulsar-220-14t-37t-104l","title":"Rolon KIT BSOR 139 Chain Sprocket Kit for Bajaj Pulsar 220 14T\/37T 104L","description":"\u003ch1\u003eRolon KIT BSOR 139 Chain Sprocket Kit for Bajaj Pulsar 220 14T\/37T 104L\u003c\/h1\u003e\n\n\u003cp\u003eRestore smooth power delivery and reliable final-drive performance on your Bajaj Pulsar 220 with the \u003cstrong\u003eRolon KIT BSOR 139 Chain Sprocket Kit\u003c\/strong\u003e. This kit is built around the \u003cstrong\u003eR520BSOR 104-link chain\u003c\/strong\u003e with a \u003cstrong\u003e14T front sprocket\u003c\/strong\u003e and \u003cstrong\u003e37T rear sprocket\u003c\/strong\u003e, matching the kit specification printed on the box: \u003cstrong\u003eR520BSOR 104L \/ 14T \/ 37T (4H)\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This is the \u003cstrong\u003e4-hole 37T rear sprocket kit\u003c\/strong\u003e for Pulsar 220 applications. Do not confuse it with Pulsar 220 kits that use 36T rear sprocket, Avenger 220 kits, Pulsar NS\/AS kits, or other 520 chain kits.\u003c\/p\u003e\n\n\u003ch2\u003eWhat This Product Is\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eRolon chain sprocket kit\u003c\/li\u003e\n  \u003cli\u003eKit code: \u003cstrong\u003eKIT BSOR 139\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eChain specification: \u003cstrong\u003eR520BSOR, 104 links\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eFront sprocket: \u003cstrong\u003e14T\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eRear sprocket: \u003cstrong\u003e37T, 4-hole pattern\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eApplication: Bajaj Pulsar 220 where 14T\/37T\/104L 4-hole kit is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat This Product Is Not\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eNot a Bajaj genuine \/ OEM-packed part\u003c\/li\u003e\n  \u003cli\u003eNot a brass\/gold racing kit\u003c\/li\u003e\n  \u003cli\u003eNot only chain; it is a chain + front sprocket + rear sprocket kit\u003c\/li\u003e\n  \u003cli\u003eNot only sprocket set without chain\u003c\/li\u003e\n  \u003cli\u003eNot Pulsar 220 14T\/36T kit\u003c\/li\u003e\n  \u003cli\u003eNot Avenger 220 chain sprocket kit\u003c\/li\u003e\n  \u003cli\u003eNot Pulsar NS200 \/ AS200 \/ RS200 kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eRolon aftermarket replacement chain sprocket kit\u003c\/li\u003e\n  \u003cli\u003eComplete final-drive service kit: chain, front sprocket and rear sprocket\u003c\/li\u003e\n  \u003cli\u003e520-series sealed chain specification as printed on the kit box\u003c\/li\u003e\n  \u003cli\u003e104-link chain length\u003c\/li\u003e\n  \u003cli\u003e14T front and 37T rear sprocket combination\u003c\/li\u003e\n  \u003cli\u003e4-hole rear sprocket pattern for matching Pulsar 220 applications\u003c\/li\u003e\n  \u003cli\u003eGood replacement option when chain is stretched, sprocket teeth are hooked, or final-drive noise has increased\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuyer Search Names \/ Internal Search Keywords\u003c\/h2\u003e\n\u003cp\u003eRolon BSOR 139, KIT BSOR 139, BSOR139, R520BSOR 104L, Pulsar 220 chain sprocket kit, Pulsar 220 14T 37T kit, Pulsar 220 4 hole chain kit, Pulsar 220 Rolon chain kit, Pulsar 220 O-ring chain kit, Bajaj Pulsar 220 chain set, Bajaj Pulsar 220 sprocket kit, chain sprocket kit Pulsar 220 104L.\u003c\/p\u003e\n\n\u003ch2\u003eConfirmed Compatibility\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eBrand\u003c\/th\u003e\n      \u003cth\u003eModel\u003c\/th\u003e\n      \u003cth\u003eRequired Specification\u003c\/th\u003e\n      \u003cth\u003eKit Code\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBajaj\u003c\/td\u003e\n      \u003ctd\u003ePulsar 220 \/ Pulsar 220F\u003c\/td\u003e\n      \u003ctd\u003e520 chain, 104L, 14T front, 37T rear, 4-hole rear sprocket\u003c\/td\u003e\n      \u003ctd\u003eKIT BSOR 139\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFitment Not Confirmed \/ Check Before Ordering\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eModel \/ Situation\u003c\/th\u003e\n      \u003cth\u003eReason to Check\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePulsar 220 variants using 36T rear sprocket\u003c\/td\u003e\n      \u003ctd\u003eThis kit is 37T rear. Some Pulsar 220 kits are sold with 36T rear sprocket, so match the old sprocket teeth count before ordering.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePulsar 220 with changed\/custom gearing\u003c\/td\u003e\n      \u003ctd\u003ePrevious owner or mechanic may have changed sprocket size. Count teeth and match chain length.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePulsar 200 NS \/ AS \/ RS\u003c\/td\u003e\n      \u003ctd\u003eDifferent chain length and rear sprocket combination may be used. Do not order by 520 chain size alone.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAvenger 220\u003c\/td\u003e\n      \u003ctd\u003eDifferent kit references exist for Avenger 220; do not assume Pulsar 220 kit fitment.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eNot Compatible \/ Do Not Order For\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBajaj Avenger 220\u003c\/li\u003e\n  \u003cli\u003ePulsar NS200 \/ AS200 \/ RS200 unless old kit exactly matches 104L \/ 14T \/ 37T \/ 4-hole\u003c\/li\u003e\n  \u003cli\u003ePulsar 150 \/ 180 \/ 200 older variants unless exact old kit matches\u003c\/li\u003e\n  \u003cli\u003eAny motorcycle requiring 36T rear sprocket\u003c\/li\u003e\n  \u003cli\u003eAny motorcycle requiring different chain pitch, chain link count, or rear sprocket hole pattern\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eRolon\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eKit Code\u003c\/td\u003e\n\u003ctd\u003eKIT BSOR 139\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChain\u003c\/td\u003e\n\u003ctd\u003eR520BSOR\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChain Links\u003c\/td\u003e\n\u003ctd\u003e104L\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFront Sprocket\u003c\/td\u003e\n\u003ctd\u003e14T\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRear Sprocket\u003c\/td\u003e\n\u003ctd\u003e37T\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRear Sprocket Pattern\u003c\/td\u003e\n\u003ctd\u003e4H \/ 4-hole\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCategory\u003c\/td\u003e\n\u003ctd\u003eAftermarket chain sprocket kit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eSimilar Parts Comparison\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eKit \/ Product\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eUse Case\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRolon KIT BSOR 139\u003c\/td\u003e\n      \u003ctd\u003eR520BSOR 104L \/ 14T \/ 37T \/ 4-hole\u003c\/td\u003e\n      \u003ctd\u003ePulsar 220 where 37T rear sprocket setup is required\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePulsar 220 14T\/36T kits\u003c\/td\u003e\n      \u003ctd\u003e104L \/ 14T \/ 36T\u003c\/td\u003e\n      \u003ctd\u003eOnly for bikes requiring 36T rear sprocket\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAvenger 220 kits\u003c\/td\u003e\n      \u003ctd\u003eUsually separate chain length\/sprocket kit reference\u003c\/td\u003e\n      \u003ctd\u003eDo not substitute with Pulsar 220 BSOR 139\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhen Should This Be Replaced?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eChain has stretched and adjustment is almost finished\u003c\/li\u003e\n  \u003cli\u003eRear sprocket teeth look hooked or sharp\u003c\/li\u003e\n  \u003cli\u003eFront sprocket is worn\u003c\/li\u003e\n  \u003cli\u003eChain has tight spots, rust, or excessive noise\u003c\/li\u003e\n  \u003cli\u003eBike jerks during acceleration due to worn final-drive parts\u003c\/li\u003e\n  \u003cli\u003eMechanic recommends replacing chain and sprockets together\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Related Parts to Check\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eChain slider \/ chain guide condition\u003c\/li\u003e\n  \u003cli\u003eRear wheel bearing condition\u003c\/li\u003e\n  \u003cli\u003eFront sprocket cover area and locking hardware\u003c\/li\u003e\n  \u003cli\u003eRear sprocket mounting nuts\/bolts\u003c\/li\u003e\n  \u003cli\u003eChain adjusters and rear axle nut condition\u003c\/li\u003e\n  \u003cli\u003eChain lubricant and chain cleaning brush\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Rolon R520BSOR 104-link chain\u003c\/li\u003e\n  \u003cli\u003e1 × 14T front sprocket\u003c\/li\u003e\n  \u003cli\u003e1 × 37T rear sprocket, 4-hole pattern\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eInstall by a trained mechanic. Replace the chain, front sprocket and rear sprocket together for correct wear matching. After installation, set chain slack as per the motorcycle service requirement, align the rear wheel correctly, tighten all fasteners properly, and recheck chain slack after the first short ride.\u003c\/p\u003e\n\n\u003ch2\u003eReturn-Prevention Note\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBefore ordering, confirm your old kit specification: 520 chain, 104 links, 14T front sprocket, 37T rear sprocket and 4-hole rear sprocket pattern.\u003c\/strong\u003e This kit should not be ordered for motorcycles requiring a 36T rear sprocket, different link count, different pitch, or different sprocket-hole pattern.\u003c\/p\u003e\n\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003ch3\u003eWhat is Rolon KIT BSOR 139?\u003c\/h3\u003e\n\u003cp\u003eRolon KIT BSOR 139 is a chain sprocket kit for Bajaj Pulsar 220 applications using R520BSOR 104L chain, 14T front sprocket and 37T rear sprocket.\u003c\/p\u003e\n\n\u003ch3\u003eWill this fit Bajaj Pulsar 220?\u003c\/h3\u003e\n\u003cp\u003eYes, use it for Pulsar 220 \/ Pulsar 220F where the old kit matches 104L chain, 14T front and 37T rear 4-hole sprocket setup.\u003c\/p\u003e\n\n\u003ch3\u003eIs this kit 14T\/37T?\u003c\/h3\u003e\n\u003cp\u003eYes. The kit specification is 14T front sprocket and 37T rear sprocket.\u003c\/p\u003e\n\n\u003ch3\u003eHow many chain links are included?\u003c\/h3\u003e\n\u003cp\u003eThis kit uses a 104-link R520BSOR chain.\u003c\/p\u003e\n\n\u003ch3\u003eIs this a 4-hole rear sprocket?\u003c\/h3\u003e\n\u003cp\u003eYes. This kit is for the 4-hole rear sprocket setup.\u003c\/p\u003e\n\n\u003ch3\u003eWill it fit Pulsar 220 with 36T rear sprocket?\u003c\/h3\u003e\n\u003cp\u003eNo. If your motorcycle requires a 36T rear sprocket kit, use the correct 36T kit instead of BSOR 139.\u003c\/p\u003e\n\n\u003ch3\u003eIs this genuine Bajaj?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a Rolon aftermarket chain sprocket kit, not Bajaj OEM packaging.\u003c\/p\u003e\n\n\u003ch2\u003eSEO Tags\u003c\/h2\u003e\n\u003cp\u003eRolon, KIT BSOR 139, BSOR 139, Rolon BSOR 139, R520BSOR, Pulsar 220 Chain Sprocket Kit, Bajaj Pulsar 220 Chain Kit, Pulsar 220 14T 37T, Pulsar 220 104L Chain Kit, Pulsar 220 4 Hole Sprocket, Pulsar 220F Chain Kit, Rolon Chain Kit, Aftermarket Chain Sprocket Kit, Chain Sprocket Kit, 520 Chain Kit, O Ring Chain Kit, Solid Bush Chain Kit\u003c\/p\u003e\n\n\u003ch2\u003eImage Filename Suggestions\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003erolon-kit-bsor-139-pulsar-220-chain-sprocket-kit-14t-37t-104l.jpg\u003c\/li\u003e\n  \u003cli\u003erolon-r520bsor-104l-pulsar-220-chain-kit.jpg\u003c\/li\u003e\n  \u003cli\u003epulsar-220-4-hole-37t-14t-rolon-chain-sprocket-kit.jpg\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImage Alt Text Suggestions\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eRolon KIT BSOR 139 chain sprocket kit for Bajaj Pulsar 220 14T 37T 104L\u003c\/li\u003e\n  \u003cli\u003eRolon R520BSOR 104 link chain kit for Pulsar 220 with 4 hole rear sprocket\u003c\/li\u003e\n  \u003cli\u003eBajaj Pulsar 220 Rolon chain sprocket kit BSOR 139 14T 37T\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rolon","offers":[{"title":"Default Title","offer_id":51749306269991,"sku":"KIT BSOR 139","price":0.0,"currency_code":"INR","in_stock":false}],"url":"https:\/\/underthehood.co.in\/products\/rolon-kit-bsor-139-chain-sprocket-kit-pulsar-220-14t-37t-104l","provider":"UNDER THE HOOD","version":"1.0","type":"link"}