{"product_id":"absoluteblack-premium-2x-oval-shimano-9100-8000-rov9100-38-4bk","title":"absoluteBLACK Premium 2x Oval Shimano 9100\/8000 ROV9100\/38\/4BK","description":"- 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\\n- For outer chainring please order \"long bolts\" from us OR bolt covers. Changing inner chainring to oval only? use original bolts\\n- Inner and outer oval chainrings are optimized with smooth shifting in mind\\n- Features smooth angled surfaces, (6) up-shifting ramps (outer ring), and (12) down-shifting points (outer ring)\\n- Oval rings help the rider to spin smoother and more efficiently\\n- Example: 32t is equivalent to 30t at dead spot and 34t at the power zone\\n- Works with 2x chainring systems and does not require any modification to the front derailleur for use\\n- Designed in UK, manufactured in Poland\\n- Third party online retailers must be preapproved by manufacturer","brand":"absoluteBLACK","offers":[{"title":"Default Title","offer_id":51478981116036,"sku":"AI5237","price":41.16,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/9479\/9236\/files\/264983317.jpg?v=1768907936","url":"https:\/\/www.emeraldbaybikes.com\/products\/absoluteblack-premium-2x-oval-shimano-9100-8000-rov9100-38-4bk","provider":"emerald bay bikes","version":"1.0","type":"link"}