{"product_id":"shimano-rt-cl900-disc-rotor-internal-spline-type","title":"Shimano RT-CL900 Disc Rotor - Internal Spline Type","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano RT-CL900 Disc Rotor - Internal Spline Type\u003c\/strong\u003e sits at the top of Shimano's road disc brake hierarchy, bringing Dura-Ace-level engineering to riders who demand reliable, quiet stopping power in every condition. Its updated arm geometry is designed to reduce noise at the source — not mask it — while the rotor's construction prioritizes heat dissipation on long, loaded descents where brake fade becomes a real concern. Mount it via the Center Lock internal spline interface for a secure, precise fit that eliminates the play you sometimes find with less refined mounting systems.\u003c\/p\u003e\n\u003cp\u003eAvailable in 140mm and 160mm diameters, the RT-CL900 gives you the option to match rotor size to your riding — \u003cstrong\u003e160mm for more aggressive stopping power\u003c\/strong\u003e on longer descents or heavier riders, 140mm where weight and clearance are the priority. Both sizes share the same rotor design and Center Lock compatibility.\u003c\/p\u003e\n\u003ch3\u003eShimano RT-CL900 Disc Rotor - Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003eLevel: Dura-Ace\u003c\/li\u003e\n\u003cli\u003eMount type: Center Lock, internal spline\u003c\/li\u003e\n\u003cli\u003eDesigned for: road disc brake systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"140mm","offer_id":43520350781484,"sku":"IRTCL900SSI","price":95.0,"currency_code":"USD","in_stock":true},{"title":"160mm","offer_id":43520350945324,"sku":"IRTCL900SI","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-rt-cl900-disc-rotor-internal-spline-type-5786262.jpg?v=1771297517","url":"https:\/\/ricycles.com\/products\/shimano-rt-cl900-disc-rotor-internal-spline-type","provider":"RA Cycles","version":"1.0","type":"link"}