{"product_id":"royal-enfield-uce-rear-brake-caliper-assembly-594054-b","title":"Royal Enfield UCE Rear Brake Caliper Assembly – Thunderbird 350\/500 \u0026 Compatible Classic 500 – 594054\/B – Genuine OEM","description":"\u003ch1\u003eRoyal Enfield UCE Rear Brake Caliper Assembly – Thunderbird 350\/500 \u0026amp; Compatible Classic 500 – 594054\/B\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eGenuine Royal Enfield rear hydraulic brake caliper assembly for compatible UCE motorcycles with the factory rear-disc braking system.\u003c\/strong\u003e The current genuine service reference is \u003cstrong\u003e594054\/B – REAR CALIPER ASSY\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThe earlier factory reference \u003cstrong\u003e594054\/A\u003c\/strong\u003e is explicitly shown in current Royal Enfield genuine-parts databases as being \u003cstrong\u003ereplaced by 594054\/B\u003c\/strong\u003e. Buyers searching for \u003cstrong\u003e594054, 594054\/A or 594054\/B\u003c\/strong\u003e are therefore looking at the same rear-caliper service family, but the current SKU should be matched before dispatch.\u003c\/p\u003e\n\n\u003cdiv style=\"border:1px solid #d8d8d8;padding:14px;margin:14px 0;\"\u003e\n\u003cp style=\"margin:0 0 6px 0;\"\u003e\u003cstrong\u003eQuick Buyer Check\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003ePart:\u003c\/strong\u003e Rear Brake Caliper Assembly   |   \u003cstrong\u003eCurrent Part No.:\u003c\/strong\u003e 594054\/B   |   \u003cstrong\u003eOlder Ref.:\u003c\/strong\u003e 594054\/A   |   \u003cstrong\u003ePrimary Fitment:\u003c\/strong\u003e Thunderbird 350 \u0026amp; Thunderbird 500 rear-disc models   |   \u003cstrong\u003eQty supplied:\u003c\/strong\u003e 1 assembly\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003ePart Identification\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eField\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e594054\/B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarlier Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e594054\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Search Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e594054\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOEM Description\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eREAR CALIPER ASSY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarlier Partsbook Wording\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCaliper Assembly Rear - BBI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBuyer-Friendly Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRear Brake Caliper \/ Rear Disc Brake Caliper Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRear Hydraulic Disc Brake\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity Supplied\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical EPC Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 rear caliper per applicable motorcycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat Is 594054\/B?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e594054\/B\u003c\/strong\u003e is the genuine Royal Enfield rear brake caliper assembly used on compatible UCE-generation motorcycles equipped with the relevant rear-disc brake system.\u003c\/p\u003e\n\n\u003cp\u003eThe caliper converts hydraulic pressure from the rear master cylinder into clamping force at the rear brake disc through the brake pads. Customers may search for this part as a \u003cstrong\u003erear brake caliper, rear disc caliper, rear caliper body, rear brake calliper, Thunderbird rear brake caliper or Classic rear disc caliper\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThis is \u003cstrong\u003enot the rear master cylinder, not the rear brake disc and not merely a brake-pad kit\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eConfirmed Factory Fitment – Thunderbird 350 \u0026amp; 500\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMotorcycle\u003c\/th\u003e\n\u003cth\u003eFactory Reference\u003c\/th\u003e\n\u003cth\u003eQty\u003c\/th\u003e\n\u003cth\u003eStatus\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoyal Enfield Thunderbird 350\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e594054\/A in original rear-caliper partsbook; current replacement 594054\/B\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eConfirmed\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoyal Enfield Thunderbird 500\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e594054\/A in original rear-caliper partsbook; current replacement 594054\/B\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eConfirmed\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eThe original Thunderbird 350\/500 factory parts catalogue places \u003cstrong\u003e594054\/A\u003c\/strong\u003e directly in the \u003cstrong\u003eRear Caliper Assembly - BBI\u003c\/strong\u003e section with quantity \u003cstrong\u003e1\u003c\/strong\u003e for both motorcycles. Current genuine-parts data supersedes 594054\/A to \u003cstrong\u003e594054\/B\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eConfirmed Classic 500 Applications\u003c\/h2\u003e\n\u003cp\u003eCurrent genuine Royal Enfield assignment data for the 594054\/A → 594054\/B caliper family includes several \u003cstrong\u003eClassic 500 rear-ABS \/ rear-disc configurations\u003c\/strong\u003e, including:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eClassic 500 Gunmetal Grey\u003c\/li\u003e\n\u003cli\u003eClassic 500 Pegasus\u003c\/li\u003e\n\u003cli\u003eClassic 500 Euro 4\u003c\/li\u003e\n\u003cli\u003eClassic 500 Redditch\u003c\/li\u003e\n\u003cli\u003eClassic 500 Stealth Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThese applications should still be checked by exact VIN, rear-brake configuration and current EPC because Royal Enfield used different brake hardware across generations and markets.\u003c\/p\u003e\n\n\u003ch2\u003eAdditional Market-Cross-Referenced Applications – Verify Before Ordering\u003c\/h2\u003e\n\u003cp\u003eIndian specialist sellers additionally cross-list the older \u003cstrong\u003e594054\/A\u003c\/strong\u003e caliper for certain \u003cstrong\u003eClassic 350 UCE rear-disc\/BS4, Bullet 500 BS4 and Thunderbird X 500 BS4\u003c\/strong\u003e applications.\u003c\/p\u003e\n\n\u003cp\u003eThese broader applications are useful search references, but they are \u003cstrong\u003enot promoted as universal confirmed fitment in this listing\u003c\/strong\u003e. For these motorcycles, confirm the exact existing caliper, VIN\/EPC and rear-brake setup before dispatch.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Rear Disc \/ Drum Brake Check\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThis is a hydraulic rear-disc brake caliper.\u003c\/strong\u003e It cannot be used on a motorcycle configured with a rear drum brake simply because the model name is the same.\u003c\/p\u003e\n\n\u003cp\u003eBefore ordering, confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe motorcycle has a factory rear-disc brake.\u003c\/li\u003e\n\u003cli\u003eThe current EPC calls for 594054\/A, 594054\/B or a confirmed supersession.\u003c\/li\u003e\n\u003cli\u003eThe caliper mounting bracket and rear disc arrangement match.\u003c\/li\u003e\n\u003cli\u003eThe hose \/ banjo connection arrangement is correct.\u003c\/li\u003e\n\u003cli\u003eThe motorcycle has not been converted using non-standard brake parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e594054\/A vs 594054\/B\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eStatus\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e594054\/A\u003c\/td\u003e\n\u003ctd\u003eRear Caliper Assy \/ Caliper Assembly Rear - BBI\u003c\/td\u003e\n\u003ctd\u003eEarlier genuine Royal Enfield reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e594054\/B\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eRear Caliper Assy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent replacement shown for 594054\/A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis Shopify listing uses the current replacement SKU 594054\/B.\u003c\/strong\u003e The older 594054\/A and base 594054 numbers are retained in the description and tags so customers searching the old number can find the correct service family.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Rear-Caliper Service Parts\u003c\/h2\u003e\n\u003cp\u003eThe original Thunderbird rear-caliper parts catalogue lists several service components around the 594054\/A caliper family:\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eDifference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e594054\/B\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eComplete Rear Caliper Assembly – this listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eComplete replacement caliper service assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e594698\/A\u003c\/td\u003e\n\u003ctd\u003eDisc Pad Kit Rear Caliper\u003c\/td\u003e\n\u003ctd\u003eBrake pads only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e594696\/A\u003c\/td\u003e\n\u003ctd\u003eMajor Kit Rear Caliper\u003c\/td\u003e\n\u003ctd\u003eInternal caliper overhaul \/ seal service kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e594697\/A\u003c\/td\u003e\n\u003ctd\u003eMinor Kit Rear Caliper\u003c\/td\u003e\n\u003ctd\u003eSmaller rear-caliper service kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e594700\/A\u003c\/td\u003e\n\u003ctd\u003ePad Pin Kit Rear Caliper\u003c\/td\u003e\n\u003ctd\u003ePad retaining hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e594703\/A\u003c\/td\u003e\n\u003ctd\u003ePrimary Pin Kit Rear Caliper\u003c\/td\u003e\n\u003ctd\u003eSliding \/ guide pin service component\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e594701\/A\u003c\/td\u003e\n\u003ctd\u003eBracket Sub Assembly Rear Caliper\u003c\/td\u003e\n\u003ctd\u003eCarrier \/ mounting bracket subassembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e594053\/A\u003c\/td\u003e\n\u003ctd\u003eDisc Brake Assembly Rear\u003c\/td\u003e\n\u003ctd\u003eRear brake-disc assembly reference; not the caliper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e594055 family\u003c\/td\u003e\n\u003ctd\u003eRear Master Cylinder Assembly\u003c\/td\u003e\n\u003ctd\u003eHydraulic pressure-generating component operated by the brake pedal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eComplete Caliper vs Brake Pad Kit\u003c\/h2\u003e\n\u003cp\u003eA worn set of brake pads does \u003cstrong\u003enot\u003c\/strong\u003e automatically require replacement of the complete caliper. Use a complete 594054\/B assembly when the caliper body, piston bore, mounting\/sliding system or complete unit is damaged or uneconomical to repair.\u003c\/p\u003e\n\n\u003cp\u003eIf only the friction material is worn and the caliper itself is healthy, the correct rear brake-pad kit may be the appropriate service item instead.\u003c\/p\u003e\n\n\u003ch2\u003eWhen Should the Complete Rear Caliper Be Replaced?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCaliper body is cracked or physically damaged.\u003c\/li\u003e\n\u003cli\u003ePiston bore is badly corroded or scored.\u003c\/li\u003e\n\u003cli\u003eCaliper has sustained accident damage.\u003c\/li\u003e\n\u003cli\u003eBleeder \/ hydraulic threads are damaged beyond safe repair.\u003c\/li\u003e\n\u003cli\u003eMounting or sliding-pin area is damaged.\u003c\/li\u003e\n\u003cli\u003ePersistent brake-fluid leakage remains after correct diagnosis.\u003c\/li\u003e\n\u003cli\u003eCaliper remains seized after proper inspection and service is not economical.\u003c\/li\u003e\n\u003cli\u003eThe exact Royal Enfield repair requirement specifies a complete 594054-family assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBrake Safety – Diagnose Before Ordering\u003c\/h2\u003e\n\u003cp\u003eA dragging, weak or spongy rear brake does not automatically mean the complete caliper is faulty. Check the entire rear hydraulic brake system, including:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eBrake pads\u003c\/li\u003e\n\u003cli\u003eCaliper piston and seals\u003c\/li\u003e\n\u003cli\u003eSliding \/ guide pins\u003c\/li\u003e\n\u003cli\u003eRear brake disc\u003c\/li\u003e\n\u003cli\u003eRear master cylinder\u003c\/li\u003e\n\u003cli\u003eBrake hose\u003c\/li\u003e\n\u003cli\u003eBanjo connections and sealing washers\u003c\/li\u003e\n\u003cli\u003eBrake fluid condition\u003c\/li\u003e\n\u003cli\u003eAir in the hydraulic system\u003c\/li\u003e\n\u003cli\u003eBrake pedal linkage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eBrakes are safety-critical. Professional diagnosis and installation are strongly recommended.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You Receive\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e1 × Genuine Royal Enfield Rear Brake Caliper Assembly\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eCurrent SKU: \u003cstrong\u003e594054\/B\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat Is Not Included Unless Physically Supplied in the Genuine Pack?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRear brake disc\u003c\/li\u003e\n\u003cli\u003eRear master cylinder\u003c\/li\u003e\n\u003cli\u003eBrake hose\u003c\/li\u003e\n\u003cli\u003eBanjo bolt \/ copper sealing washers\u003c\/li\u003e\n\u003cli\u003eBrake fluid\u003c\/li\u003e\n\u003cli\u003eABS sensor\u003c\/li\u003e\n\u003cli\u003eABS tone ring\u003c\/li\u003e\n\u003cli\u003eWheel \/ hub components\u003c\/li\u003e\n\u003cli\u003eSeparate caliper service kits\u003c\/li\u003e\n\u003cli\u003eMounting fasteners not packaged with the genuine caliper\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBrake Pads \/ Package Contents Note\u003c\/h2\u003e\n\u003cp\u003eDo not assume that every genuine replacement-caliper package contains separate service brake pads or every small external fitting shown in the motorcycle EPC. Royal Enfield service-kit packaging can change over time.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe sealed genuine package and dealer invoice are the final authority for physical kit contents.\u003c\/strong\u003e If pad inclusion is critical to the order, confirm the actual boxed item before dispatch.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the exact motorcycle, rear-disc configuration and part number before opening.\u003c\/li\u003e\n\u003cli\u003eCompare the supplied caliper with the removed unit, including mounting points and hydraulic connection.\u003c\/li\u003e\n\u003cli\u003eInspect the brake disc for scoring, thickness and runout.\u003c\/li\u003e\n\u003cli\u003eInspect pads and replace them if required.\u003c\/li\u003e\n\u003cli\u003eUse the correct brake fluid specified for the motorcycle.\u003c\/li\u003e\n\u003cli\u003eUse new sealing washers where required by the service procedure.\u003c\/li\u003e\n\u003cli\u003eBleed the rear brake system correctly after hydraulic work.\u003c\/li\u003e\n\u003cli\u003eUse only the model-specific Royal Enfield tightening specifications; no torque value is guessed in this listing.\u003c\/li\u003e\n\u003cli\u003eCheck for leaks and correct pedal feel before moving the motorcycle.\u003c\/li\u003e\n\u003cli\u003eVerify proper wheel rotation and that the brake releases fully.\u003c\/li\u003e\n\u003cli\u003eBrake work should be carried out by a competent motorcycle technician.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNot for Modern J-Series \/ 450 \/ 650 Models by Assumption\u003c\/h2\u003e\n\u003cp\u003eDo \u003cstrong\u003enot\u003c\/strong\u003e order 594054\/B for Meteor 350, Hunter 350, Classic 350 Reborn, New Bullet 350 J-Series, Himalayan 450, Guerrilla 450, Super Meteor 650, Shotgun 650, Classic 650, Bear 650, Interceptor 650 or Continental GT 650 unless that motorcycle’s exact EPC specifically calls for this part number.\u003c\/p\u003e\n\n\u003cp\u003eShared brand, engine capacity or visual similarity does not prove brake-caliper interchangeability.\u003c\/p\u003e\n\n\u003ch2\u003eOrdering \u0026amp; Return Note\u003c\/h2\u003e\n\u003cp\u003ePlease verify \u003cstrong\u003e594054\/B\u003c\/strong\u003e, motorcycle model, model year, rear-brake type, ABS\/non-ABS arrangement where relevant, caliper shape and hydraulic connection before opening or installing the part.\u003c\/p\u003e\n\n\u003cp\u003eCorrectly supplied parts are not returnable for wrong selection, wrong diagnosis, mechanic recommendation, fitment mismatch or change of mind. Wrong, damaged or missing-item claims should be reported with the required complete unboxing video within 24 hours of delivery.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is Royal Enfield 594054?\u003c\/strong\u003e\u003cbr\u003e594054 is the base reference for a genuine Royal Enfield rear brake caliper family. The older exact part number is 594054\/A, and current genuine-parts data shows 594054\/B as its replacement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the current part number?\u003c\/strong\u003e\u003cbr\u003eThe current replacement reference shown by Royal Enfield genuine-parts databases is \u003cstrong\u003e594054\/B\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does it fit Thunderbird 350?\u003c\/strong\u003e\u003cbr\u003eYes. The original Thunderbird 350 factory parts catalogue lists 594054\/A as the rear caliper assembly, quantity one. Current data replaces \/A with \/B.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does it fit Thunderbird 500?\u003c\/strong\u003e\u003cbr\u003eYes. The original Thunderbird 500 parts catalogue lists the same 594054\/A rear caliper, quantity one, with current replacement 594054\/B.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does it fit Classic 500?\u003c\/strong\u003e\u003cbr\u003eCurrent genuine-parts assignment data includes multiple Classic 500 variants such as Gunmetal Grey, Pegasus, Euro 4, Redditch and Stealth Black. Confirm exact VIN and rear-brake configuration before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does it fit Classic 350 or Bullet 500?\u003c\/strong\u003e\u003cbr\u003eSome Indian specialist fitment databases cross-list 594054\/A for specific Classic 350 UCE rear-disc and Bullet 500 BS4 applications. Verify the exact motorcycle EPC and old caliper before ordering because this broader fitment is configuration-sensitive.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is the rear master cylinder included?\u003c\/strong\u003e\u003cbr\u003eNo. The rear master cylinder is a separate component in the hydraulic brake circuit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this the brake-pad kit?\u003c\/strong\u003e\u003cbr\u003eNo. This is the complete rear caliper assembly. 594698\/A is the rear-caliper brake-pad kit in the original Thunderbird catalogue.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will it fit a drum-brake motorcycle?\u003c\/strong\u003e\u003cbr\u003eNo. A rear brake caliper is used with a hydraulic rear-disc brake system.\u003c\/p\u003e\n\n\u003ch2\u003eBuyer Search Terms\u003c\/h2\u003e\n\u003cp\u003eRoyal Enfield 594054\/B, 594054B, 594054\/A, 594054A, 594054, rear caliper assy, rear brake caliper, rear disc brake caliper, Thunderbird 350 rear caliper, Thunderbird 500 rear caliper, Classic 500 rear brake caliper, Classic 350 UCE rear caliper, Bullet 500 rear caliper, Thunderbird X rear brake caliper, UCE rear brake caliper, BBI rear caliper, genuine Royal Enfield brake caliper, rear hydraulic caliper.\u003c\/p\u003e","brand":"Royal Enfield","offers":[{"title":"Default Title","offer_id":52345716244775,"sku":"594054\/B","price":0.0,"currency_code":"INR","in_stock":false}],"url":"https:\/\/underthehood.co.in\/products\/royal-enfield-uce-rear-brake-caliper-assembly-594054-b","provider":"UNDER THE HOOD","version":"1.0","type":"link"}