{"product_id":"kmc-drive-sprocket-for-bosch-15t-super-narrow-chromoly-black","title":"KMC Drive Sprocket for Bosch - 15T, Super Narrow, Chromoly Black","description":"\u003ch2\u003eKMC Drive Sprocket for Bosch — 15T, Super Narrow, Chromoly Black\u003c\/h2\u003e\n\u003cp\u003eReplacement front drive sprocket for Bosch Gen 2 mid-motor e-bikes. Mid motors put enormous sustained load through the drivetrain, and the standard sprocket is usually the first thing to wear out — KMC's hardened chromoly version is built specifically to cope, rated for 3,500km+ of service.\u003c\/p\u003e\n\u003cp\u003eDirect mount, super narrow 11\/128\" profile for use with multi-speed derailleur setups.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHardened chromoly steel — substantially tougher than standard steel\u003c\/li\u003e\n  \u003cli\u003eRated for 3,500km+ service life\u003c\/li\u003e\n  \u003cli\u003ePrecision tooth profile for efficient power transfer under high torque\u003c\/li\u003e\n  \u003cli\u003eDirect mount — straight replacement or upgrade\u003c\/li\u003e\n  \u003cli\u003eSuits Bosch Active Line and Performance Line Gen 2 motors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e KMC (e-Bike Solutions)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e BSFB5015\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth:\u003c\/strong\u003e 15T\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 11\/128\" (super narrow)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e approx. 1.9mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Chromoly steel, black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Bosch Gen 2 — Active Line and Performance Line\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChain compatibility:\u003c\/strong\u003e KMC e9, e10, e11 and similar multi-speed e-bike chains\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAN Barcode:\u003c\/strong\u003e 8719189051018\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e⚠️ Not suitable for hub-geared models — those need the wide 1\/8\" single speed version. Also check your motor generation: Gen 4 uses a different mount.\u003c\/em\u003e\u003c\/p\u003e","brand":"Kmc","offers":[{"title":"Default Title","offer_id":62367322046851,"sku":"BSFB5015","price":10.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/6108\/files\/ebike-sprocket-for-gen-2-bosch-systems-1-2-x11-128-1-9m-black_1401.jpg?v=1786629260","url":"https:\/\/fifecycles.co.uk\/products\/kmc-drive-sprocket-for-bosch-15t-super-narrow-chromoly-black","provider":"Fife Cycle Centre","version":"1.0","type":"link"}