{"product_id":"royal-enfield-570836b-needle-assembly-bs29-cv-carb-classic-bullet-350","title":"Royal Enfield 570836\/B – Needle Assembly (Jet Needle 1.5, BS29 CV Carb) for Classic 350, Bullet 350 UCE, Electra 350, Thunderbird 350","description":"\u003cp data-start=\"316\" data-end=\"701\"\u003eThe \u003cstrong data-start=\"320\" data-end=\"362\"\u003eRoyal Enfield 570836\/B Needle Assembly\u003c\/strong\u003e is the genuine \u003cstrong data-start=\"378\" data-end=\"407\"\u003ejet needle assembly (1.5)\u003c\/strong\u003e used in the \u003cstrong data-start=\"420\" data-end=\"443\"\u003eBS29 CV carburettor\u003c\/strong\u003e on a wide range of Royal Enfield 350cc and Machismo models. Official Thunderbird 350\/500 parts catalogues list \u003cstrong data-start=\"555\" data-end=\"595\"\u003e“570836\/B – Needle Assy. 1.5 (BS29)”\u003c\/strong\u003e in the CV carburettor section, confirming its role as the slide\/jet needle rather than a float needle.\u003c\/p\u003e\n\u003cp data-start=\"703\" data-end=\"1266\"\u003eReputed OE sellers describe this part simply as \u003cstrong data-start=\"751\" data-end=\"772\"\u003e“Needle Assembly”\u003c\/strong\u003e or \u003cstrong data-start=\"776\" data-end=\"812\"\u003e“Needle Valve Assembly – 570836”\u003c\/strong\u003e, under \u003cstrong data-start=\"820\" data-end=\"856\"\u003eClassic 350 carburettor assembly\u003c\/strong\u003e and \u003cstrong data-start=\"861\" data-end=\"904\"\u003eThunderbird 350 \/ Bullet 350 categories\u003c\/strong\u003e, while  \u003cstrong data-start=\"965\" data-end=\"1156\"\u003eClassic 350, Bullet 350 UCE (KS\/ES), Electra 350 UCE (ES), Thunderbird 350\/TBTS, Machismo A350 (1999), Thunderbird KS (CDI 2004 \/ TCI 2005) and Thunderbird ES (2005)\u003c\/strong\u003e. \u003c\/p\u003e\n\u003cp data-start=\"1268\" data-end=\"1634\"\u003eThis jet needle controls the \u003cstrong data-start=\"1297\" data-end=\"1323\"\u003emid-range fuel mixture\u003c\/strong\u003e in your BS29 CV carb. A worn needle or needle jet can cause flat spots, poor pick-up, surging and high fuel consumption. Replacing the jet needle with a genuine 570836\/B restores proper taper and height, helping your Classic \/ Bullet \/ Electra \/ Thunderbird \/ Machismo run smoother through the mid-rpm range.\u003c\/p\u003e\n\u003cp data-start=\"1636\" data-end=\"1857\"\u003eIdeal when doing a \u003cstrong data-start=\"1655\" data-end=\"1677\"\u003efull carb overhaul\u003c\/strong\u003e, resolving tuning issues after high mileage, or restoring an older Machismo\/Thunderbird to factory fuelling, this is a direct OEM replacement—no guesswork, no local pattern parts.\u003c\/p\u003e\n\u003chr data-start=\"1859\" data-end=\"1862\"\u003e\n\u003ch3 data-start=\"1864\" data-end=\"1887\"\u003eKey Features \u003c\/h3\u003e\n\u003cul data-start=\"1889\" data-end=\"3083\"\u003e\n\u003cli data-start=\"1889\" data-end=\"2027\"\u003e\n\u003cp data-start=\"1891\" data-end=\"2027\"\u003e\u003cstrong data-start=\"1891\" data-end=\"1921\"\u003eGenuine Royal Enfield part\u003c\/strong\u003e – Officially listed as \u003cstrong data-start=\"1945\" data-end=\"1975\"\u003e570836\/B – Needle Assembly\u003c\/strong\u003e in Royal Enfield parts databases and microfiche.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2028\" data-end=\"2167\"\u003e\n\u003cp data-start=\"2030\" data-end=\"2167\"\u003e\u003cstrong data-start=\"2030\" data-end=\"2063\"\u003eBS29 CV carb jet needle (1.5)\u003c\/strong\u003e – Correct needle profile for the \u003cstrong data-start=\"2097\" data-end=\"2120\"\u003eBS29 CV carburettor\u003c\/strong\u003e used on multiple 350cc and Machismo models.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2168\" data-end=\"2376\"\u003e\n\u003cp data-start=\"2170\" data-end=\"2376\"\u003e\u003cstrong data-start=\"2170\" data-end=\"2193\"\u003eWide model coverage\u003c\/strong\u003e – Trusted suppliers map 570836\/B to \u003cstrong data-start=\"2230\" data-end=\"2344\"\u003eClassic 350, Bullet 350 UCE KS\/ES, Electra 350 UCE ES, Thunderbird 350\/TBTS\/X350, Machismo A350, Machismo A500\u003c\/strong\u003e and older Thunderbird KS\/ES.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2377\" data-end=\"2516\"\u003e\n\u003cp data-start=\"2379\" data-end=\"2516\"\u003e\u003cstrong data-start=\"2379\" data-end=\"2410\"\u003eRestores mid-range fuelling\u003c\/strong\u003e – Corrects taper and height for smoother acceleration, better throttle response and reduced flat spots.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2517\" data-end=\"2671\"\u003e\n\u003cp data-start=\"2519\" data-end=\"2671\"\u003e\u003cstrong data-start=\"2519\" data-end=\"2553\"\u003eOEM-grade machining and finish\u003c\/strong\u003e – Ensures proper fit in the slide and needle jet, unlike cheap pattern needles that wear quickly or upset mixture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2672\" data-end=\"2787\"\u003e\n\u003cp data-start=\"2674\" data-end=\"2787\"\u003e\u003cstrong data-start=\"2674\" data-end=\"2696\"\u003eDirect replacement\u003c\/strong\u003e – Drop-in fit for BS29 carb; no modification required when replacing a worn jet needle.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2788\" data-end=\"2926\"\u003e\n\u003cp data-start=\"2790\" data-end=\"2926\"\u003e\u003cstrong data-start=\"2790\" data-end=\"2820\"\u003eCarburettor-specific spare\u003c\/strong\u003e – Listed under \u003cstrong data-start=\"2836\" data-end=\"2873\"\u003eCarburetor Assembly – Classic 350\u003c\/strong\u003e and \u003cstrong data-start=\"2878\" data-end=\"2897\"\u003eThunderbird 350\u003c\/strong\u003e categories by OE sellers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3085\" data-end=\"3088\"\u003e\n\u003ch3 data-start=\"3090\" data-end=\"3130\"\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=\"3132\" data-end=\"4520\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"3132\" data-end=\"3254\"\u003e\n\u003ctr data-start=\"3132\" data-end=\"3254\"\u003e\n\u003cth data-start=\"3132\" data-end=\"3170\" data-col-size=\"sm\"\u003eModel\u003c\/th\u003e\n\u003cth data-start=\"3170\" data-end=\"3195\" data-col-size=\"sm\"\u003eEngine \/ Platform\u003c\/th\u003e\n\u003cth data-start=\"3195\" data-end=\"3219\" data-col-size=\"sm\"\u003eFuel System\u003c\/th\u003e\n\u003cth data-start=\"3219\" data-end=\"3243\" data-col-size=\"sm\"\u003eYears (approx.)\u003c\/th\u003e\n\u003cth data-start=\"3243\" data-end=\"3254\" data-col-size=\"sm\"\u003eStatus\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"3378\" data-end=\"4520\"\u003e\n\u003ctr data-start=\"3378\" data-end=\"3504\"\u003e\n\u003ctd data-start=\"3378\" data-end=\"3415\" data-col-size=\"sm\"\u003eClassic 350 (UCE, carb)\u003c\/td\u003e\n\u003ctd data-start=\"3415\" data-end=\"3440\" data-col-size=\"sm\"\u003e346cc UCE single\u003c\/td\u003e\n\u003ctd data-start=\"3440\" data-end=\"3464\" data-col-size=\"sm\"\u003eBS29 CV carb\u003c\/td\u003e\n\u003ctd data-start=\"3464\" data-end=\"3488\" data-col-size=\"sm\"\u003e~2009–2019\u003c\/td\u003e\n\u003ctd data-start=\"3488\" data-end=\"3504\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3505\" data-end=\"3631\"\u003e\n\u003ctd data-start=\"3505\" data-end=\"3542\" data-col-size=\"sm\"\u003eBullet 350 UCE (KS)\u003c\/td\u003e\n\u003ctd data-start=\"3542\" data-end=\"3567\" data-col-size=\"sm\"\u003e346cc UCE single\u003c\/td\u003e\n\u003ctd data-start=\"3567\" data-end=\"3591\" data-col-size=\"sm\"\u003eBS29 CV carb\u003c\/td\u003e\n\u003ctd data-start=\"3591\" data-end=\"3615\" data-col-size=\"sm\"\u003e~2009–2019\u003c\/td\u003e\n\u003ctd data-start=\"3615\" data-end=\"3631\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3632\" data-end=\"3758\"\u003e\n\u003ctd data-start=\"3632\" data-end=\"3669\" data-col-size=\"sm\"\u003eBullet 350 UCE (ES)\u003c\/td\u003e\n\u003ctd data-start=\"3669\" data-end=\"3694\" data-col-size=\"sm\"\u003e346cc UCE single\u003c\/td\u003e\n\u003ctd data-start=\"3694\" data-end=\"3718\" data-col-size=\"sm\"\u003eBS29 CV carb\u003c\/td\u003e\n\u003ctd data-start=\"3718\" data-end=\"3742\" data-col-size=\"sm\"\u003e~2009–2019\u003c\/td\u003e\n\u003ctd data-start=\"3742\" data-end=\"3758\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3759\" data-end=\"3885\"\u003e\n\u003ctd data-start=\"3759\" data-end=\"3796\" data-col-size=\"sm\"\u003eElectra 350 UCE (ES)\u003c\/td\u003e\n\u003ctd data-start=\"3796\" data-end=\"3821\" data-col-size=\"sm\"\u003e346cc UCE single\u003c\/td\u003e\n\u003ctd data-start=\"3821\" data-end=\"3845\" data-col-size=\"sm\"\u003eBS29 CV carb\u003c\/td\u003e\n\u003ctd data-start=\"3845\" data-end=\"3869\" data-col-size=\"sm\"\u003e~2009–2016\u003c\/td\u003e\n\u003ctd data-start=\"3869\" data-end=\"3885\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3886\" data-end=\"4012\"\u003e\n\u003ctd data-start=\"3886\" data-end=\"3923\" data-col-size=\"sm\"\u003eThunderbird 350 \/ TBTS \/ X350\u003c\/td\u003e\n\u003ctd data-start=\"3923\" data-end=\"3948\" data-col-size=\"sm\"\u003e346cc UCE \u0026amp; earlier\u003c\/td\u003e\n\u003ctd data-start=\"3948\" data-end=\"3972\" data-col-size=\"sm\"\u003eBS29 CV carb\u003c\/td\u003e\n\u003ctd data-start=\"3972\" data-end=\"3996\" data-col-size=\"sm\"\u003e~2002–2019\u003c\/td\u003e\n\u003ctd data-start=\"3996\" data-end=\"4012\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4013\" data-end=\"4139\"\u003e\n\u003ctd data-start=\"4013\" data-end=\"4050\" data-col-size=\"sm\"\u003eThunderbird KS (CDI\/TCI)\u003c\/td\u003e\n\u003ctd data-start=\"4050\" data-end=\"4075\" data-col-size=\"sm\"\u003e346cc CI TwinSpark\u003c\/td\u003e\n\u003ctd data-start=\"4075\" data-end=\"4099\" data-col-size=\"sm\"\u003eCarb (BS29 family)\u003c\/td\u003e\n\u003ctd data-start=\"4099\" data-end=\"4123\" data-col-size=\"sm\"\u003e2004–2005\u003c\/td\u003e\n\u003ctd data-start=\"4123\" data-end=\"4139\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4140\" data-end=\"4266\"\u003e\n\u003ctd data-start=\"4140\" data-end=\"4177\" data-col-size=\"sm\"\u003eThunderbird ES (early)\u003c\/td\u003e\n\u003ctd data-start=\"4177\" data-end=\"4202\" data-col-size=\"sm\"\u003e346cc CI TwinSpark\u003c\/td\u003e\n\u003ctd data-start=\"4202\" data-end=\"4226\" data-col-size=\"sm\"\u003eCarb (BS29 family)\u003c\/td\u003e\n\u003ctd data-start=\"4226\" data-end=\"4250\" data-col-size=\"sm\"\u003e2005\u003c\/td\u003e\n\u003ctd data-start=\"4250\" data-end=\"4266\" data-col-size=\"sm\"\u003e✅ Confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4267\" data-end=\"4393\"\u003e\n\u003ctd data-start=\"4267\" data-end=\"4304\" data-col-size=\"sm\"\u003eMachismo A350\u003c\/td\u003e\n\u003ctd data-start=\"4304\" data-end=\"4329\" data-col-size=\"sm\"\u003e346cc Machismo CI\u003c\/td\u003e\n\u003ctd data-start=\"4329\" data-end=\"4353\" data-col-size=\"sm\"\u003eCarb (BS29-related)\u003c\/td\u003e\n\u003ctd data-start=\"4353\" data-end=\"4377\" data-col-size=\"sm\"\u003e1999–2005\u003c\/td\u003e\n\u003ctd data-start=\"4377\" data-end=\"4393\" data-col-size=\"sm\"\u003eCHECK PART NHUMBER\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4394\" data-end=\"4520\"\u003e\n\u003ctd data-start=\"4394\" data-end=\"4431\" data-col-size=\"sm\"\u003eMachismo A500\u003c\/td\u003e\n\u003ctd data-start=\"4431\" data-end=\"4456\" data-col-size=\"sm\"\u003e499cc Machismo CI\u003c\/td\u003e\n\u003ctd data-start=\"4456\" data-end=\"4480\" data-col-size=\"sm\"\u003eCarb (BS29 variant)\u003c\/td\u003e\n\u003ctd data-start=\"4480\" data-end=\"4504\" data-col-size=\"sm\"\u003e2009\u003c\/td\u003e\n\u003ctd data-start=\"4504\" data-end=\"4520\" data-col-size=\"sm\"\u003eCHECK PART NHUMBER\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-start=\"4522\" data-end=\"4575\"\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003e\u003cstrong data-start=\"4522\" data-end=\"4575\"\u003eCHECK PART NUMBER BEFORE PURCHASE \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"4522\" data-end=\"4575\"\u003e\u003cstrong data-start=\"4522\" data-end=\"4575\"\u003eExplicitly NOT listed \/ we treat as incompatible:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"4577\" data-end=\"4969\"\u003e\n\u003cli data-start=\"4577\" data-end=\"4689\"\u003e\n\u003cp data-start=\"4579\" data-end=\"4689\"\u003e\u003cstrong data-start=\"4579\" data-end=\"4598\"\u003eJ-Series models\u003c\/strong\u003e – Classic 350 J, Bullet 350 J, Meteor 350, Hunter 350 (EFI throttle body, no BS29 carb).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4690\" data-end=\"4783\"\u003e\n\u003cp data-start=\"4692\" data-end=\"4783\"\u003e\u003cstrong data-start=\"4692\" data-end=\"4705\"\u003e650 Twins\u003c\/strong\u003e – Interceptor 650, Continental GT 650, Super Meteor 650, Shotgun 650 (EFI).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4784\" data-end=\"4866\"\u003e\n\u003cp data-start=\"4786\" data-end=\"4866\"\u003e\u003cstrong data-start=\"4786\" data-end=\"4842\"\u003eHimalayan \/ Scram 411, Himalayan 450 \/ Guerrilla 450\u003c\/strong\u003e (different carb\/EFI).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4867\" data-end=\"4969\"\u003e\n\u003cp data-start=\"4869\" data-end=\"4969\"\u003e\u003cstrong data-start=\"4869\" data-end=\"4881\"\u003eEFI 500s\u003c\/strong\u003e – Classic 500 \/ Bullet 500 \/ Thunderbird 500 EFI (UCD33 system, no BS29 jet needle).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4971\" data-end=\"4974\"\u003e\n\u003ch3 data-start=\"4976\" data-end=\"4988\"\u003eVariants\u003c\/h3\u003e\n\u003cul data-start=\"4990\" data-end=\"5113\"\u003e\n\u003cli data-start=\"4990\" data-end=\"5113\"\u003e\n\u003cp data-start=\"4992\" data-end=\"5017\"\u003e\u003cstrong data-start=\"4992\" data-end=\"5015\"\u003eSingle OEM variant:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"5020\" data-end=\"5113\"\u003e\n\u003cli data-start=\"5020\" data-end=\"5049\"\u003e\n\u003cp data-start=\"5022\" data-end=\"5049\"\u003ePart Number: \u003cstrong data-start=\"5035\" data-end=\"5047\"\u003e570836\/B\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5052\" data-end=\"5113\"\u003e\n\u003cp data-start=\"5054\" data-end=\"5113\"\u003eDescription (OE): \u003cstrong data-start=\"5072\" data-end=\"5110\"\u003eNeedle Assembly 1.5 – BS29 CV Carb\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"5115\" data-end=\"5149\"\u003eNo LH\/RH, colour or size variants.\u003c\/p\u003e\n\u003chr data-start=\"5151\" data-end=\"5154\"\u003e\n\u003ch3 data-start=\"5156\" data-end=\"5170\"\u003eFAQs \u003c\/h3\u003e\n\u003cp data-start=\"5172\" data-end=\"5486\"\u003e\u003cstrong data-start=\"5172\" data-end=\"5230\"\u003eQ1. Is 570836\/B a float needle or the main jet needle?\u003c\/strong\u003e\u003cbr data-start=\"5230\" data-end=\"5233\"\u003e\u003cstrong data-start=\"5233\" data-end=\"5240\"\u003eA1.\u003c\/strong\u003e 570836\/B is the \u003cstrong data-start=\"5257\" data-end=\"5299\"\u003ejet needle assembly (Needle Assy. 1.5)\u003c\/strong\u003e for the \u003cstrong data-start=\"5308\" data-end=\"5331\"\u003eBS29 CV carburettor\u003c\/strong\u003e. It controls mixture in the mid-throttle range. The \u003cstrong data-start=\"5384\" data-end=\"5415\"\u003efloat needle\/float assembly\u003c\/strong\u003e is a different part number (e.g., 500843) and is not included here.\u003c\/p\u003e\n\u003chr data-start=\"5488\" data-end=\"5491\"\u003e\n\u003cp data-start=\"5493\" data-end=\"5793\"\u003e\u003cstrong data-start=\"5493\" data-end=\"5543\"\u003eQ2. Which bikes does this needle assembly fit?\u003c\/strong\u003e\u003cbr data-start=\"5543\" data-end=\"5546\"\u003e\u003cstrong data-start=\"5546\" data-end=\"5553\"\u003eA2.\u003c\/strong\u003e Multiple trusted sources confirm fitment on \u003cstrong data-start=\"5598\" data-end=\"5763\"\u003eClassic 350 (carb), Bullet 350 UCE (KS\/ES), Electra 350 UCE (ES), Thunderbird 350\/TBTS\/X350, Machismo A350, Machismo A500 and early Thunderbird KS\/ES (2002–2005)\u003c\/strong\u003e that use the BS29 CV carb.\u003c\/p\u003e\n\u003chr data-start=\"5795\" data-end=\"5798\"\u003e\n\u003cp data-start=\"5800\" data-end=\"6057\"\u003e\u003cstrong data-start=\"5800\" data-end=\"5871\"\u003eQ3. Does it fit the new BS6 Classic 350 J-Series or EFI 500 models?\u003c\/strong\u003e\u003cbr data-start=\"5871\" data-end=\"5874\"\u003e\u003cstrong data-start=\"5874\" data-end=\"5881\"\u003eA3.\u003c\/strong\u003e No. The BS6 J-Series bikes use EFI throttle bodies, and the 500 EFI models use the Keihin UCD33 system. They do \u003cstrong data-start=\"5994\" data-end=\"6001\"\u003enot\u003c\/strong\u003e use the BS29 CV carb, so 570836\/B is not applicable.\u003c\/p\u003e\n\u003chr data-start=\"6059\" data-end=\"6062\"\u003e\n\u003cp data-start=\"6064\" data-end=\"6392\"\u003e\u003cstrong data-start=\"6064\" data-end=\"6109\"\u003eQ4. When should I replace the jet needle?\u003c\/strong\u003e\u003cbr data-start=\"6109\" data-end=\"6112\"\u003e\u003cstrong data-start=\"6112\" data-end=\"6119\"\u003eA4.\u003c\/strong\u003e Replace the needle if you see \u003cstrong data-start=\"6150\" data-end=\"6191\"\u003evisible wear marks\/steps on the taper\u003c\/strong\u003e, experience \u003cstrong data-start=\"6204\" data-end=\"6245\"\u003eflat spots or surging at mid-throttle\u003c\/strong\u003e, or if mixture tuning cannot be stabilised even after cleaning jets and setting float height. A fresh OEM needle helps restore correct fuelling.\u003c\/p\u003e\n\u003chr data-start=\"6394\" data-end=\"6397\"\u003e\n\u003cp data-start=\"6399\" data-end=\"6700\"\u003e\u003cstrong data-start=\"6399\" data-end=\"6469\"\u003eQ5. Can I use this with aftermarket jets or performance carb kits?\u003c\/strong\u003e\u003cbr data-start=\"6469\" data-end=\"6472\"\u003e\u003cstrong data-start=\"6472\" data-end=\"6479\"\u003eA5.\u003c\/strong\u003e 570836\/B is designed around the stock \u003cstrong data-start=\"6518\" data-end=\"6534\"\u003eBS29 CV carb\u003c\/strong\u003e and OEM jetting. Many tuners still use it with slightly altered jet sizes, but for race\/performance setups you should follow the carb kit supplier’s recommendations.\u003c\/p\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50762047553831,"sku":null,"price":281.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/570836_B_jet_needle_1.5_for_Bullet_350_UCE_Electra_350_Thunderbird_350.jpg?v=1764412233","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-570836b-needle-assembly-bs29-cv-carb-classic-bullet-350","provider":"UNDER THE HOOD","version":"1.0","type":"link"}