Shimano GRX Di2 RX815 Groupset 2x11-speed

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Description of Shimano GRX Di2 RX815 Groupset 2x11-speed


Shimano GRX - Explore beyond

Instead of telling gravel riders what they needed, Shimano asked them what they wanted for their offroad adventures. The result are the Shimano GRX components which represent the first series especially developed for riding on rough roads and through gravel. The Shimano GRX sets itself apart from the rest of the component world with its gravel specific ergonomics, optimized gearing options, rugged reliability as well as a quiet and stable drivetrain.



Content of the Shimano GRX Di2 RX815 2x11-speed groupset:

  • GRX Di2 ST-RX815 shift/brake lever (left + right)
  • GRX BR-RX810 disc brake caliper (front + rear)
  • GRX FC-RX810-2 crankset - 48/31 teeth
  • GRX Di2 FD-RX815 front derailleur
  • GRX Di2 RD-RX815-GS Shadow RD+ rear derailleur - medium
  • Deore XT CS-R8000 cassette (11-30 or 11-32 teeth)
  • CN-HG701-11 chain - 116 links
    (incl. SM-CN900 Quick Link chain connector)
Hubs, brake discs and bottom bracket cups are not included. These can be ordered separately.

Compatibility:

Please note that the RD-RX815-GS rear derailleur is only compatible to the CS-R8000 cassette with the 11-30 and 11-32 teeth sprocket ratio.


Shimano GRX Di2 ST-RX815 shift/brake lever

The electronic/hydraulic Shimano GRX Di2 ST-RX815 dual control lever provides Gravel inspired ergonomics. Particularly striking is the shape of the handle whose hood head is raised to prevent misalignment while the recessed finger notch prevents the hand from slipping upwards. Like the handle, also the lever features an anti-slip coating for greater mixed-terrain control.

In terms of shifting performance the 2x11-speed GRX Di2 STI lever can take full advantage of the well-known digital precision of the Shimano Di2 electronic shift systems and the Synchronized Shifting technology. In contrast the braking performance is optimized by the brake lever's rotary axle which is positioned 18 mm higher than usual and Shimano's SERVOWAVE technology improving the lever's modulation ability.

In addition, the programmable Di2 shift/brake lever features three switches (two on the side and one on the hood's top) that can be used to operate third-party devices such as compatible lights or bike computers. In order to meet the individual needs of the driver, the hydraulic brake lever offers reach and free stroke adjustment as well.

Shimano GRX BR-RX810 disc brake caliper

Never hesitate to tackle rough surfaces with the hydraulic Shimano GRX BR-RX810 caliper. In doing so Ice Tech ensure excellent heat dissipation while the BR-RX810's 2 ceramic pistons guarantee excellent braking performance under all conditions. The Flat Mount system makes it possible to attach the disc brake caliper directly at frame or fork. Trouble-free and simple maintenance is provided by the proven One Way Bleeding concept and the Easy Hose Joint System which simplifies brake hose exchanges (brake hose sold separately).

Shimano GRX FC-RX810-2 crankset

Shimano's GRX cranks are designed to handle a wide variety of terrain and riding styles and feature a 2.5 mm wider chainline for more freedom in frame design and the use of wider tires.

The Hollowtech II GRX FC-RX810-2 crankset relies on a 2x11-speed drivetrain concept and offers the optimum gearing for every terrain and riding style thanks to Shimano's wide range of cassettes and sprocket ratios. The aluminium crank with a 46.9 mm chainline is characterized by the widest gradation of all Shimano components to date which is achieved by a 48 to 31 teeth chainring ratio. The 4-arm chainrings - made of aluminium as well - are compatible to HG-EV and HG-X11 chains.

Shimano GRX Di2 FD-RX815 Down Swing front derailleur

The Shimano GRX Di2 FD-RX815 front derailleur is designed to handle the 17 teeth difference of the FC-RX810-2 crankset's chainrings without effort. Of course, the front derailleur also adapts the 2.5 mm wider chain line of the GRX cranks which allows the use of wider tires. In addition, the FD-RX815 features integrated control functions for easy and intuitive customization. Accordingly, the Di2 front derailleur makes it possible to program chain guide trim settings and supports Shimano's Synchronized Shifting technology in semi or full mode.

Shimano GRX Di2 RD-RX815-GS Shadow RD+ rear derailleur

The electronic Shimano GRX Di2 RD-RX815 rear derailleur is characterized by quiet, smooth, precise and reliable shifting even in the most demanding terrain. This is mainly due to the Shadow RD+ chain stabilisation system which prevents the chain from slapping and dropping as well as from unnecessary movements of the derailleur's cage, thus ensuring uninterrupted shifting performance. That is why an On/Off switch can be found next to the upper pulley, much like Shimano’s mountain bike derailleurs. When activated the rear derailleur pivot takes a firm hold to reduce excessive movement, noise and general "chain chatter".

The RD-RX815 rear derailleur will accommodate cassettes with 11-30 teeth up to cassettes with 11-34 teeth. Pulleys with 13 teeth ensure a reduced noise level and increased riding comfort.


If you need more detailed information about the single parts of the groupsets check the articles in the referring categories.


Manufacturer's item codes:

  • shift/brake system: IRX815DLF6SC100 + IRX815DRRDSC170
  • crankset: IFCRX8102CX81 | IFCRX8102DX81 | IFCRX8102EX81
  • front derailleur: IFDRX815F
  • rear derailleur: IRDRX815
  • cassette: ICSM8000140 | ICSM8000142
  • chain: ICNHG70111116Q
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Fact Sheet of Shimano GRX Di2 RX815 Groupset 2x11-speed

Product Name: Shimano GRX Di2 RX815 Groupset 2x11-speed
Manufacturer: Shimano Parts
Item Code: SHI442159
Manufacturer item code: see description
Derailleur: 2x11-speed
Included in delivery: see description
without brake discs and bottom bracket
Crank length (mm): 170 | 172.5 | 175
Chainwheel, number of teeth: 48/31
Front Derailleur Braze/Clamp: brazed-on
Derailleur max. number of teeth: 46 - 50 teeth
Bracket, profile of axle: Hollowtech II (integrated BB axle, 24 mm)
Derailleur short/long: medium
Derailleur max. number of teeth: 34 teeth
Capacity of derailleur: 38 teeth
Nuance of sprocket / Gearing: 11-12-13-14-15-17-19-21-24-27-30
11-12-13-14-16-18-20-22-25-28-32
Manufacturer page: http://www.shimano-europe.com/
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Item includes
Still 10+ in stock in stock, delivery time 13-15 days Shimano GRX Di2 ST-RX815 + BR-RX810 Hydraulic Disc Brake - Flat Mount - 2x11-speed - Set FW
Still 10+ in stock in stock, delivery time 13-15 days Shimano GRX Di2 FD-RX815 Front Derailleur 2x11-speed
Still 10+ in stock in stock, delivery time 13-15 days Shimano CN-HG701-11 Chain 11-speed - with Quick Link - 116 links
Still 10+ in stock in stock, delivery time 13-15 days Shimano GRX Di2 ST-RX815 + BR-RX810 Hydraulic Disc Brake - Flat Mount - 2x11-speed - Set RW
Still 10+ in stock in stock, delivery time 13-15 days Shimano GRX Di2 RD-RX815-GS / RD-RX817-GS Shadow RD+ Rear Derailleur 11-speed - medium – Model | Largest Sprocket RD-RX815-GS | max. 34 teeth
Selection: Shimano GRX FC-RX810-2 Crankset 2x11-speed - 48/31 Teeth
Still 4 in stock in stock, delivery time 13-15 days Crank Arm Length 170 mm
Still 4 in stock in stock, delivery time 13-15 days Crank Arm Length 172.5 mm
Still 10+ in stock in stock, delivery time 13-15 days Crank Arm Length 175 mm
Selection: Shimano Ultegra CS-R8000 Cassette 11-speed
Still 10+ in stock in stock, delivery time 13-15 days Sprocket Ratio 11-25
Still 10+ in stock in stock, delivery time 13-15 days Sprocket Ratio 11-28
Still 10+ in stock in stock, delivery time 13-15 days Sprocket Ratio 11-30
Still 10+ in stock in stock, delivery time 13-15 days Sprocket Ratio 11-32 (medium rear derailleur only)
Still 10+ in stock in stock, delivery time 13-15 days Sprocket Ratio 12-25
Still 10+ in stock in stock, delivery time 13-15 days Sprocket Ratio 14-28
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