Shimano Gravel Groupset was launched in several series, namely RX800, RX600 for 11 speed or RX400 for 10 speed with a choice of 1×11, 2×11 and 2×10 drivetrains as well as mechanical or electronic/Di2 shifting options.
After going through various processes, starting from a very comprehensive research, through a development and testing process, as well as being tested by several selected Riders in various highly competitive fields, Shimano finally launched the latest product, GRX, which is dedicated to Gravel lovers around the world who want to adventuring by prioritizing speed and toughness in various fields.
Every component of the Shimano GRX Groupset uses Shimano’s best road bike and mountain bike drivetrain technology to deliver the stable and precise shifting that is Shimano’s trademark.
Premium 11-speed Drivetrain
Shimano Gravel Groupset employs Shimano’s class-leading drivetrain technologies from both road and mountain bike components to deliver the hallmark shifting precision and stability for which the company is known.
With GRX the net result is a smooth and quiet-running drivetrain that is specially tuned for the unique characteristics of gravel terrain, riding positions and gravel bicycle designs. For simplicity, Shimano GRX uses cassettes and chains that already exist in the Shimano lineup.
In addition to the category-leading Shimano GRX 800 series, there are also two lower cost 11-speed components: a 600-series crank and set of shifters, which can be mixed seamlessly with 800 level parts.1https://bike.shimano.com/en-SG/information/news/SHIMANO-Introduces-World-First-Dedicated-Gravel-Component-Series.html[/note]
GRX Crankset
comes with a 2.5mm wider chainline to provide more clearance on the tires and frame. GRX chainring, has Shimano Dynamic Chain Engagement GRX technology which functions to increase chain retention so that the chain does not easily fall apart when going through bumpy or bumpy terrain.
For the GRX single chainring 1×11, the crankset options are 40T, 42T (RX810) and 40T (RX600) which can be combined with 40T or even 42T cassette sprockets.
Meanwhile, the GRX double chainring comes with a choice of 48-31T (RX810) and 46-30T (RX600) cranksets that can be combined with a maximum 34T cassette sprocket. Especially for the GRX single Chainring 1×10, there is only 1 crankset option, namely 46-30T (RX400) which can be combined with a cassette sprocket of a maximum of 36T.
FC-RX810-1
1×11 gearing for gravel and cyclocross
Crank arm length: 170 mm, 172.5 mm, 175 mm
Chainring options: 40T, 42T
SHIMANO HOLLOWTECH II construction
655 g
FC-RX810-2
Wider-range 48-31T, 2×11 crankset for longer adventures and more challenging terrain
Crank arm length: 170 mm, 172.5 mm, 175 mm
SHIMANO HOLLOWTECH II construction
722 g
FC-RX810-1
1×11 gearing for gravel and cyclocross
Crank arm length: 170 mm, 172.5 mm, 175 mm
Chainring options: 40T, 42T
SHIMANO HOLLOWTECH II construction
655 g
FC-RX600-1
Crank arm length: 165mm, 170 mm, 172.5 mm, 175 mm
Chainring: 40T
753 g
FC-RX600-11
Wider-range 46-30T, 2×11 crankset Crank arm length: 165mm, 170 mm, 172.5 mm, 175 mm 816 gGRX Front derailleurs (FD)
Complementing the crankset, the Front Derailleur is available in Di2 (FD-RX815) and Mechanical (FD-RX810/RX400) versions where the position shifts out 2.5mm to adapt larger tire sizes (up to 42mm) for off-road terrain.
FD-RX815-F
Di2 electronic precision shifting 17T front range capacity 131 gFD-RX810-F
Lighter front shifting with ergonomic power curve
Toggle link construction offers more cable routing options
Precise and easy adjustment with integrated cable tension adjustment
94 g
GRX Rear derailleurs (RD)
Adapting from the technology introduced in 2018 namely the RX rear derailleur, the Di2 version of the Rear Derailleur GRX (RD-RX815/RX817) or the mechanical version (RD-RX810/RX812/RX400) designed to create smooth, quiet and reliable gear shifting. to face tough terrain.
Equipped with a chain stabilizing system commonly known as the SHADOW RD+ to minimize unnecessary derailleur movement and provide uninterrupted shifting performance.m) for off-road terrain.
RD-RX815/RD-RX817 (Di2)
SHIMANO SHADOW RD+ stabilization
Compatible with existing Di2 DUAL CONTROL levers
Max. cassette range:
RX815 (30-34T low)
RX817 (40-42T low)
Max. front chainring range: 17T (RX815 only)
Capacity
RX815 – 38T
RX817 – 31T
288/322 g
RD-RX810/RD-RX812
SHIMANO SHADOW RD+ stabilization
Compatible with existing 11-speed mechanical DUAL CONTROL levers
Max. cassette range:
RX810 (30-34T low)
RX812 (40-42T low)
Max. front chainring range: 17T (RX810 only)
Capacity
RX810 – 38T
RX812 – 31T
251/264 g
GRX STI Levers
The GRX shifter is dedicated specifically to the use of highly ergonomic Gravels (Di2 versions: ST-RX815 or Mechanical versions: ST-RX810/RX600/RX400, ST-RX810-LA) featuring 18mm higher axis points, more curved brake levers and has an anti-slip surface coating so that it is able to pass through rough terrain.
ST-RX815-L/R Di2 Hydraulic Disc Brake DUAL CONTROL LEVER
More secure grip in rough terrain from higher brake axis, anti-slip lever, thumb notch on hood, taller hood prevents hand slippage
ST-RX810-L/R Hydraulic Disc Brake DUAL CONTROL LEVER
Gravel-inspired ergonomics and textured lever for extra grip
11-speed shifting range
Light, high-performance mechanical shifting
565 g
GRX Braking System
The main need for Gravel Riders is optimal brake grip to control speed in all conditions. Therefore, the top variant of the Shimano Gravel Groupset or GRX family, namely the RX800 series brake levers (ST-RX815) is equipped with Servo Wave Technology derived from Shimano’s mountain bike (MTB), which provides more optimal braking power with better modulation when cycling with more speed. aggressive. If you choose the non-Servo Wave version of the RX810, or the RX600 series and RX400 levers, of course it still provides exceptional braking power similar to the Ultegra, 105 or Tiagra disc brakes.
The Shimano Gravel Groupset also offers additional braking options, namely an additional brake lever that is placed parallel to the handle bar. This brake lever is connected to the main disc brake both at the front and rear. This brake lever aims to maximize braking when the hand is on the top of the handle bar.
GRX calipers (BR-RX810/400) adopt flatmount road calipers to provide more powerful braking performance and have features such as one way bleeding and ICE TECHNOLOGIES that can absorb heat in the brakepads and rotor for more efficient cooling and long-lasting brake performance. .
Gravel- specific Wheelset
To complete the experience even more for gravel lovers, GRX also launched a wheelset that uses a 12mm E-THRU Axle (WH-RX570-TL-F12/R12). Wheelset sizes 700c or 650b (non boost) feature tubeless ready, and are equipped with 21.6mm wider inner rims and 22mm wheel set wall height.
“Shimano GRX Groupset, is Shimano’s answer to the gravel-bike which is currently very popular and is starting to grow around the world. The GRX is a crossroads road bike-mountain bike and is a pioneer for Gravel specialty components. The GRX provides several 1×11 and 2×11 drivetrain options which are available in mechanical or electronic versions, as well as a 1×10 option which is only available in mechanical versions. In addition, GRX also provides the option of using cassette sprockets with a wider range (max. 42T for 1×11, 34T for 2×12, 36T for 2×10) that will spoil riders who like to eat uphill terrain.