{"product_id":"shimano-steps-rt-em300-180mm-rear-rotor-with-internal-external-lockring-for-e-bikes","title":"Shimano STEPS RT-EM300 180mm Rear Rotor with Internal \u0026 External Lockring for E-Bikes","description":"\u003cp\u003eThe Shimano STEPS RT-EM300 rotor is engineered to deliver reliable and consistent braking performance, specifically designed for E-bikes equipped with Shimano STEPS systems. Featuring an integrated speed sensor magnet, this 180 mm rotor ensures seamless energy control while allowing extra frame clearance for wider tires. Its durable yet lightweight construction combines rigidity with the trusted Shimano Center Lock system, providing enhanced strength and effortless installation.\u003c\/p\u003e\n\n\u003cp\u003ePrecision cutting and drilled braking surfaces optimize pad clearing in muddy conditions and improve cooling during intense rides. The super polished, wide braking surface guarantees excellent stopping power when paired with resin brake pads. Designed exclusively for rear wheel use, this rotor is the perfect upgrade for riders seeking dependable and efficient braking on their electric bicycles.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eConsistent and precise braking performance on Shimano STEPS E-bikes\u003c\/li\u003e\n  \u003cli\u003eAllowing frame clearance for wider tires thanks to integrated speed sensor magnet\u003c\/li\u003e\n  \u003cli\u003eDurability and lightweight design with Shimano Center Lock system for easy setup\u003c\/li\u003e\n  \u003cli\u003eImproved pad clearing and cooling in muddy or high-load conditions\u003c\/li\u003e\n  \u003cli\u003eEnhanced braking power with super polished wide braking surface\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse on front wheels, as rotor is designed for rear wheel only\u003c\/li\u003e\n  \u003cli\u003eCompatibility with metallic brake pads – resin pads only recommended\u003c\/li\u003e\n  \u003cli\u003eNon-Shimano STEPS E-bike systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this rotor compatible with all Shimano STEPS E-bikes?\u003c\/strong\u003e\u003cbr\u003eIt is compatible with Shimano STEPS E-bikes that require a 180 mm rear rotor featuring a built-in speed sensor magnet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this rotor with metallic brake pads?\u003c\/strong\u003e\u003cbr\u003eNo, this rotor is designed specifically for use with resin brake pads to ensure optimal performance and durability.\u003c\/p\u003e","brand":"Shimano STEPS","offers":[{"title":"Default Title","offer_id":45477712855215,"sku":"RTEM300M","price":26.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/1731600764-22064600.jpg?v=1768515905","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-steps-rt-em300-180mm-rear-rotor-with-internal-external-lockring-for-e-bikes","provider":"Swinnerton Cycles","version":"1.0","type":"link"}