Perhaps the most visually arresting part of the new groupset, the ST-R9270 hydraulic lever bodies are slightly larger than those of R9100, and the lever bodies curve inwards slightly. The hoods now curve inwards slightly for better ergonomics. Let’s take a look at each component in turn… Dura-Ace R9200 levers and satellite shifters If big gears are your jam, the cranks are available in a 54/40t option, as well as standard compact (50/34t) and semi-compact (52/36t) versions. In the past, Dura-Ace has been quite narrowly focused on the needs of road racers, with hardcore gearing to match.ĭespite the move to 12-speed, Shimano hasn’t radically shaken up its gearing in the way SRAM did when it launched its eTap AXS groupsets (SRAM paired smaller chainrings with a 10-tooth cassette sprocket), but it has chosen to offer a more everyman choice of cassettes, with 11-28t, 11-30t and 11-34t options available. This is claimed to offer “shockless” shifting, with no need to ease up on the pedals as you change gear. R9200 cassettes use ‘Hyperglide+’, a design debuted with Shimano’s top-spec mountain bike groupset, XTR M9100. Faster, smoother shifting and lower gearingĪccording to Shimano, Dura-Ace R9200’s rear shifting is 58 per cent faster than R9100’s, while the front sees a 45 per cent gain. It also incorporates the charging port and mode switch that were previously situated in a separate junction box. The R9250 rear derailleur can pair directly via Bluetooth with Shimano’s E-Tube app on a phone or tablet, for example, allowing for customisation of the groupset from the off. This incorporates wireless connectivity for third-party devices, doing away with the additional EW-WU111 wireless adaptor R9100 series Di2 required. With development of the new groupset focused primarily on road disc brakes, the rim brake R9250 levers are not wireless.ĭespite this, there’s only one rear derailleur option for the groupset. The main battery is claimed to last for around 1,000km of riding, while the coin cells in the levers should manage 1.5 to 2 years. Wireless communication takes place between the levers and the rear derailleur, with the latter always ‘on’ and listening for signals. The levers are wireless and powered by small coin cells, while the two derailleurs are wired directly into the central battery using new, thinner SD-300 wires. New Dura-Ace is referred to as R9200 series, and it comes in just two flavours: Well, the answer is no – the brand is ditching the mechanical side. We speculated in our extensive Dura-Ace rumours feature as to whether Shimano would continue to produce its flagship groupset in four configurations, as it did for R9100 (mechanical and Di2, with both rim and disc brake variants). Semi-wireless Dura-Ace R9200 spells the end for Shimano’s pro-level mechanical groupsets New wheelsets feature a new freehub, but groupset is backwards compatible.Slight weight increase (35g!) over previous R9170 Di2 groupset. Lowest ever gearing for Dura-Ace with a new 11-34 cassette option.Charging port and wireless connectivity relocated to rear derailleur.Wireless levers (for disc groupset), with derailleurs and main battery wired-in.Electronic shifting with no mechanical option.
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