{"product_id":"absoluteblack-premium-oval-road-52t-shimano-9100-8000-black","title":"absoluteBLACK Premium Oval Road 52T, Shimano 9100\/8000 - Black","description":"\u003cp\u003e- Compatibility: Shimano Dura-Ace 9100, R9120, R9150 \u0026amp; R9170 Di2 and Ultegra 8000, R8020, R8050 \u0026amp; 8070 Di2, 105- R7000, R7020, R7070. They can also retrofit all 9000 and 6800 series cranks but use bolt covers for best appearance. 10 \/ 11 \/ 12sp compatible \u003cbr\u003e - For outer chainring please order \"long bolts\" from us OR bolt covers. Changing inner chainring to oval only? use original bolts \u003cbr\u003e - Inner and outer oval chainrings are optimized with smooth shifting in mind \u003cbr\u003e - Features smooth angled surfaces, (6) up-shifting ramps (outer ring), and (12) down-shifting points (outer ring) \u003cbr\u003e - Oval rings help the rider to spin smoother and more efficiently \u003cbr\u003e - Example: 32t is equivalent to 30t at dead spot and 34t at the power zone \u003cbr\u003e - Works with 2x chainring systems and does not require any modification to the front derailleur for use \u003cbr\u003e - Designed in UK, manufactured in Poland\u003c\/p\u003e\n\u003cp\u003eModel: Premium Oval Shimano 9100\/8000\u003cbr\u003eRing Type: Outer\u003cbr\u003eSpeed: 2x9\/10\/11sp\u003cbr\u003eMount: 4x110mm\u003cbr\u003eTeeth: 52\u003cbr\u003eOval\/Round: Oval\u003cbr\u003eColor: Black\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n","brand":"Mi tienda","offers":[{"title":"Default Title","offer_id":54482998984988,"sku":"AI5240","price":593384.0,"currency_code":"COP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/3880\/5020\/files\/46701_ai5240.jpg?v=1788056974","url":"https:\/\/www.marmot-store.com\/products\/absoluteblack-premium-oval-road-52t-shimano-9100-8000-black","provider":"Mi tienda","version":"1.0","type":"link"}