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Chain Reaction Cycles Ltd.

05/07/2019 | News release | Distributed by Public on 05/07/2019 09:59

Shimano’s GRX groupset could be the perfect pick for your next gravel adventure

Tuesday, May 7th, 2019 3:50pm

Shimano have just released details of their new GRX groupset, aimed at the ever-growing adventure/gravel bike market.

A blend of the company's hugely popular road and mountain bike groupset offering, Shimano GRX is available in many different configurations - including 2×11 speed, 2×10 speed and 1×11 speed - we've included a full breakdown of the possible configurations below.

Shimano GRX is essentially available at Tiagra, 105, Ultegra and Ultegra Di2 levels albeit with varying names:

  • Shimano Ultegra = Shimano RX800 (Ultegra mechanical shifters: ST-RX810, Ultegra Di2 shifters: ST-RX815)
  • Shimano 105 = Shimano RX600
  • Shimano Tiagra = Shimano RX400

So what makes this a 'gravel'-specific groupset?

Let's start with the Gravel ST shifter. Shimano GRX uses a redesigned gravel-inspired road shifter, catering specifically for the rough and tumble of all-road adventures.

A textured surface and taller hoods prevent hand slippage, while the brake lever axis has been raised by 18mm for easier braking. The brake lever has been curved for extra confidence during off-road descents too.

Shimano's Servowave action, made famous in its many mountain bike braking systems, is also employed on GRX to offer supreme braking power with very minimal lever action.

Sticking with the brakes, Shimano GRX also allows you to run sub brake levers, allowing you to brake in an upright position.

Down at the business end, the brake caliper provides excellent heat dissipation and when it comes to maintenance, has an easy-to-use one way bleeding system.

Integrated dropper post lever

Dropper posts are pretty much a must-have on modern mountain bikes, and any gravel ride with a fair amount of descending will be made all the more enjoyable with the option to drop and raise your saddle on-the-fly. Shimano GRX allows for this with its integrated dropper post on the left hand shifter (11-speed shifter only).

Shimano Shadow RD+

Borrowing the same technology from its mountain bike groupsets, the Shimano GRX rear derailleur uses Shadow RD+, a chain stabilisation system which makes for a quieter drivetrain, a reduction in chain slap and a simple way to stop chain drop.

We're looking forward to giving the new gravel groupset a go - let us know what you think of it down in the comments section below.