{"product_id":"shimano-rt-cl800-ice-tech-freeza-rotor-with-internal-magnet-lockring-203-mm","title":"Shimano RT-CL800 Ice Tech FREEZA Rotor with Internal Magnet Lock Ring - 203mm","description":"\u003ch3\u003e\n\u003cspan class=\"\"\u003e203mm Shimano RT-CL800 Ice Tech FREEZA Disc Brake rotor with internal magnet lockring\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eThe Shimano \u003c\/span\u003eRT-CL800LJ\u003cspan class=\"\"\u003e is a high-performance \u003c\/span\u003e203mm Centre Lock disc brake rotor\u003cspan class=\"\"\u003e,\u003c\/span\u003e\u003cspan class=\"\"\u003e an Ultegra\/XT-level component.\u003c\/span\u003e\u003cspan class=\"\"\u003e The \"LJ\" typically denotes the \u003c\/span\u003e203mm diameter (L)\u003cspan class=\"\"\u003e and an \u003c\/span\u003einternal lockring with an integrated speed magnet (J) for e-bike\/STEPS systems. It features ICE TECHNOLOGIES FREEZA, a three-layer stainless steel\/aluminium sandwich construction and radiator fins that significantly reduce heat build up by up to \u003cspan data-math=\"50^\\circ\\text{C}\" class=\"math-inline\"\u003e50'C\u003c\/span\u003e. This superior heat management ensures consistent, powerful, and quiet braking, minimizing fade and extending pad life.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures: \u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul class=\"description-overview\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,0,0\"\u003ePremium Heat Management: These rotors, classified at the XT\/Ultegra-level, employ an innovative stainless steel\/aluminium three-layer sandwich construction to actively manage thermal energy, ensuring consistent and powerful stopping performance throughout your ride.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,1,0\"\u003eSignificant Temperature Reduction: The composite structure, featuring an aluminium core clad between steel layers, facilitates rapid heat dissipation. This design can lower the rotor surface temperature by approximately \u003cspan data-math=\"50^\\circ\\text{C}\" class=\"math-inline\"\u003e50'C\u003c\/span\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,2,0\"\u003eEnhanced System Performance: When paired with Ice-Tech brake pads, this thermal efficiency can drop peak temperatures from around \u003cspan data-math=\"400^\\circ\\text{C}\" class=\"math-inline\"\u003e400'C to 300'C\u003c\/span\u003e, resulting in dramatic improvements across overall braking function.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,3,0\"\u003eFREEZA Cooling Fins: The central alloy section is designed to extend beyond the braking track, forming cooling fins that maximize air exposure and enhance the rotor's cooling capacity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,4,0\"\u003eImproved Longevity and Quiet Operation: Superior heat dispersion minimizes brake fade and substantially extends the service life of the brake pads, while also contributing to reduced braking noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,5,0\"\u003eSecure Center Lock Design: Utilizing the established Shimano Center Lock mounting system, these rotors are lightweight, rigid, and durable, offering a strong, secure fit with a simple installation process.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,6,0\"\u003eOptimized Braking Track: The precisely machined braking surface not only promotes effective cooling during intense use but also efficiently clears mud and debris, maintaining performance in adverse conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,7,0\"\u003eLightweight, Rigid Support: A large aluminium spider forms a highly rigid and low-weight structure, providing steadfast support for the external rotor ring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,8,0\"\u003eHigh-Performance Finish: The braking surface receives a super-polished treatment, which contributes to exceptionally smooth and reliable stopping power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,9,0\"\u003eComprehensive Sizing and Lockring Options: Available sizes include 203mm, 180mm, 160mm, and 140mm. Lockring styles are offered in internal, external, or internal with an integrated speed magnet to suit various frame types and e-bike applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":56948199424384,"sku":"RTCL800LJ","price":64.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/4838\/1934\/files\/Shimano-RT-CL800-Ice-Tech-FREEZA-rotor-with-internal-magnet-lockring-203-mm.jpg?v=1766065074","url":"https:\/\/www.e-bikeshop.co.uk\/products\/shimano-rt-cl800-ice-tech-freeza-rotor-with-internal-magnet-lockring-203-mm","provider":"e-bikeshop.co.uk","version":"1.0","type":"link"}