Shimano grx’s mid-priced rx600 cranks employ a 2-piece design available in a 2x10 configuration. All grx cranksets use a new, 2.5Mm chainline for increased tire and frame clearance. The 2x features a wider-range 46-30t ratio, this, when paired with the available 11-34 cassette, offers an exceptionally low climbing gear while maintaining a ratio that allows riders to take advantage of strong tailwinds and long descents.Choice. Shimano’s new grx line is all about choice. Shimano doesn’t want to pigeonhole the way you ride, or decide for you what the best solution is for your riding style. While we’ve long been fans of double chainring drivetrains, we also recognize the value of a single chainring system. With grx, shimano offers both, each with gearing options that allow you to tailor your drivetrain to suit your tastes.With two different derailleur cage lengths, shimano grx ensures stable shifting and chain retention across a wide range of gearing options. Looking for maximum range while maintaining road cassette progression go with grx’s 800 series 2x11 rd-rx810 or di2 rd- rx815 rear derailleurs, designed for close ratio clusters, with 48 31 chainrings and an 11-34 cassette. Paired with 700c x 40mm tires, it delivers a top gear similar to a road bike with 25mm tires and a 50 x 11 gear. And on the low end, with its 31 x 34 combination, you get a gear that early mountain bikers would envy. It is the lowest gear currently on offer for premium road drivetrains aside from shim...
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