{"product_id":"twc-kelsey-hayes-rear-master-cylinder-fx-xls","title":"Kelsey Hayes-Type Rear Master Cylinder for FX and XLS","description":"\u003cp\u003eChrome-plated, fully assembled die-cast rear master cylinder with 3\/4-inch bore. Fits FX four-speed models late 1979–1983, excluding FXWG and FXSB, and Sportster XLS 1980–1981. Replaces HD 42453-80A and 42454-80A. Preserve the late-year boundary and model exclusions when checking fitment.\u003c\/p\u003e\u003ch2\u003eConfigurations and part numbers\u003c\/h2\u003e\u003cul\u003e\u003cli\u003ePart 45207: Chrome \/ ¾-inch bore\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eWorkshop notes\u003c\/h2\u003e\u003cp\u003eWORKSHOP NOTES\u003cbr\u003eConfirm exact motorcycle model and year, early\/late production boundary, master-cylinder bore where stated, mounting arrangement, actuator and hydraulic-system compatibility before ordering. Observe all model exclusions and the fluid specification stated for the selected product. A matching finish or similar appearance is not a fitment guarantee. Rebuild kits, covers, gaskets and dust boots are separate service parts, not complete cylinders. Source discrepancies are stated for affected variants and require verification before publishing or accepting orders. Have brake-system compatibility and installation checked by a qualified motorcycle technician. Supplier listing does not confirm current stock.\u003cbr\u003e\u003cbr\u003eSource: merchant-supplied Mid-USA Catalogue Volume 42 screenshots, cross-checked against exact-SKU supplier listings.\u003c\/p\u003e","brand":"My Store 2","offers":[{"title":"Chrome \/ ¾-inch bore","offer_id":54556974252216,"sku":"45207","price":175.79,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/5378\/3736\/files\/0077866_550.jpg?v=1793147457","url":"https:\/\/twowheelcustom.com\/products\/twc-kelsey-hayes-rear-master-cylinder-fx-xls","provider":"Two Wheel Customs","version":"1.0","type":"link"}