{"product_id":"pbi-portco-usa-25-tooth-transmission-mainshaft-sprocket-harley-4-speed-big-twin","title":"PBI Portco USA 25 Tooth Transmission Mainshaft Sprocket Harley 4 Speed Big Twin","description":"\u003cp\u003ePBI Portco USA 25 Tooth Transmission Mainshaft Sprocket Harley 4 Speed Big Twin\u003c\/p\u003e\u003cp\u003eBrand: PBI \/ Portco USA\u003c\/p\u003e\u003cp\u003ePart Number (Ref): H-37-25 (Cross-references to PBI 279-25)\u003c\/p\u003e\u003cp\u003eTooth Count: 25-Tooth\u003c\/p\u003e\u003cp\u003eChain Size: Fits 530 Pitch Chain\u003c\/p\u003e\u003cp\u003eMaterial: High-grade Chromoly Steel\u003c\/p\u003e\u003cp\u003eFinish: Electroless Nickel Plating (for corrosion resistance)\u003c\/p\u003e\u003cp\u003eManufacturing: Made in the USA \u003c\/p\u003e\u003cp\u003eModel Compatibility\u003c\/p\u003e\u003cp\u003eThis sprocket is a direct fit for Harley-Davidson 4-Speed Big Twin transmissions, typically covering the following years and models:\u003c\/p\u003e\u003cp\u003eEra Compatible Models\u003c\/p\u003e\u003cp\u003e1936 – 1947 Knucklehead (EL, FL)\u003c\/p\u003e\u003cp\u003e1937 – 1948 Big Twin Flathead (U, UL, ULH)\u003c\/p\u003e\u003cp\u003e1948 – 1965 Panhead (FL, FLH)\u003c\/p\u003e\u003cp\u003e1966 – 1979 Shovelhead (FL, FLH, FX, FXE, FXS)\u003c\/p\u003e\u003cp\u003eNote: This 25-tooth configuration is often used to achieve higher top-end speeds and lower highway RPMs compared to the stock 22 or 23-tooth sprockets\u003c\/p\u003e\u003cp\u003eselling as pictured.\u003c\/p\u003e\u003cp\u003emore than welcome to pick up at shop in butler pa \u0026amp; save shipping.\u003c\/p\u003e\u003cp\u003e031126hb\u003c\/p\u003e","brand":"cyclewarehouse.online","offers":[{"title":"Default Title","offer_id":46668475596962,"sku":"031126 H-37-25 PBI sprocket","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0335\/9824\/2861\/files\/img20260312115748210.jpg?v=1773334619","url":"https:\/\/cyclewarehouse.online\/products\/pbi-portco-usa-25-tooth-transmission-mainshaft-sprocket-harley-4-speed-big-twin","provider":"cyclewarehouse.online","version":"1.0","type":"link"}