{"product_id":"shimano-cs-r8101-11-30-ultegra-12-speed-cassette","title":"Shimano Ultegra R8101 12spd 11-30 Cassette","description":"\u003ch3\u003eShimano Ultegra CS-R8100 – Redefining Road Shifting\u003c\/h3\u003e\n\u003cp\u003eShimano’s HYPERGLIDE+ technology has already transformed off-road shifting—now it’s your turn on the road. With the CS-R8100 12-speed cassette, riders can shift seamlessly under full load, whether climbing hard, sprinting, or racing a friend. No need to ease off your pedalling—every gear change is smooth, fast, and precise.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePeak Efficiency: Refined 12-step gear combination delivers optimal acceleration and cadence control for every racing scenario.\u003c\/li\u003e\n\u003cli\u003eSmooth Shifts Under Load: Perform seamless shifts even at maximal pedaling force, without compromising momentum.\u003c\/li\u003e\n\u003cli\u003eWide Compatibility: Works with both 12-speed and existing 11-speed Shimano road freehub bodies for flexible drivetrain setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCassette Model: CS-R8100\u003c\/li\u003e\n\u003cli\u003eSpeeds: 12-speed\u003c\/li\u003e\n\u003cli\u003eGear Range: 11-12-13-14-15-16-17-19-21-24-27-30T\u003c\/li\u003e\n\u003cli\u003eWeight: 291g\u003c\/li\u003e\n\u003cli\u003eTechnology: HYPERGLIDE+\u003c\/li\u003e\n\u003cli\u003eCompatibility: Shimano 12-speed and 11-speed road freehub bodies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eShimano Ultegra CS-R8100 – the new standard in road shifting, built for maximum speed and performance\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Default","offer_id":42582050537531,"sku":"ICSR810112130","price":150.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/9819\/1931\/files\/CycleHouseBikes-2026-08-11T121021.879.jpg?v=1786414251","url":"https:\/\/cyclehouse.com.au\/products\/shimano-cs-r8101-11-30-ultegra-12-speed-cassette","provider":"Cycle House","version":"1.0","type":"link"}