{"product_id":"rotor-direct-mount-sram-bb30-chainring-q-rings","title":"Rotor direct mount sram bb30 chainring, q-rings","description":"Product Description  Apart from bio-mechanical performance, there was one important factor that played a role in the development of the Rotor Q-Rings: compatibility. The Direct Mount Q-Rings allow you to upgrade the ovality of your SRAM BB30 crank.  Specifications:Application:Cross CountryMount:SRAM Direct MountTeeth:30t, 32t, 34tGearing:1x9-speed, 1x10-speed, 1x11-speed, 1x12-speedType:ovalTechnical Information:Offset:0 mmChainline:49 mmMaterial:aluminium (7075-T6)Features:for SRAM BB30100 % CNC-machinedblack anodisedlaser-etchedTechnology:Oval Chainrings  Bio-mechanical studies show that Q-Rings provide better performance than conventional chainrings. The effect is achieved by making the largest muscle groups in the legs more effective and eliminating the dead centre when pedalling. This results in a much smoother and rounder ride overall, with less muscle fatigue. The biggest advantages of using Q-Rings are the significant improvement in general fitness due to improved pedalling, greater sprinting ability due to the elimination of dead centre, slower muscle fatigue, and ultimately an increase in cardiovascular endurance for athletes.  A submaximal test followed by a time trial over a distance of 1 km proved that the Q-rings reduce heart rate and oxygen consumption while improving performance by 1.6 seconds compared to round chainrings.    OCP  Optimum Chainring Position (OCP) indicates the various adjustments that Rotor Q-Rings offer to adapt to the rider's specific pedalling characteristics. With this Direct Mount chainring, OCP is fixed to Position 3 due to the design.  Manufacturer Numbers:30 tooth:C01-034-31010-032 tooth:C01-034-29010-034 tooth:C01-034-27010-0Contents:1 x Rotor direct mount Q-ring chainring   Manufacturer: Rotor COMPONENTES TECNOLÓGICOS SL  C \/ Miño 14  28864 Ajalvir – MADRID  Spain  Verkäufe@Rotorbike.com","brand":"Rotor","offers":[{"title":"Default Title","offer_id":53373831774545,"sku":"8434366007335","price":109.99,"currency_code":"EUR","in_stock":true}],"url":"https:\/\/fietsaccessoires.nl\/products\/rotor-direct-mount-sram-bb30-chainring-q-rings","provider":"Fietsaccessoires.nl","version":"1.0","type":"link"}