Rear Derailleur Shimano GRX RDRX822 12s

Shimano  GRX RD-RX822 1x12 Speed Rear Derailleur

The SHIMANO GRX RD-RX822 1 x 12-speed rear derailleur with integrated chain stabilizer ensures quiet, secure, and precise shifting on mixed terrain. The GS version is compatible with SHIMANO MTB cassettes of 10-45 teeth and the SGS version with SHIMANO MTB 12-speed cassettes of 10-51 teeth.

Shimano GRX 1x12 Speed Gravel Rear Derailleur RD-RX822

Gravel cycling shouldn’t be a complicated affair. The appeal of this cycling discipline, with its drop bars and dirt roads, lies in its simplicity, openness, and adventure. No route is impossible. Anyone can ride. The gear must be functional and reliable without breaking the bank. That’s why whether you’re a gravel veteran or a newcomer to rugged paths and trails, you’ll be thrilled with the latest version of the GRX, Shimano’s pioneering gravel-specific component group.

If your goal is to achieve better personal times on your next tour or you want to compete in a race, you’ll appreciate the gearing of the RX820 1x12 setup with a 10-45 cassette and a 40 or 42 tooth chainring. Like its 11-speed predecessor, the RX820 offers smooth and reliable shifting, but now has a wider range and an extra cog, making it easier to find the optimal cadence to maintain your position in the field. This system uses a central cage rear derailleur with an integrated SHADOW PLUS chain stabilizer for quieter shifting and a more secure chain guide on rough terrain. Don’t worry about the next shift, focus on leaving the competition behind.

If all-day or multi-day adventures with lots of climbs are your thing, the new RX820 1x12 UNSTOPPABLE option with SHIMANO's wide range of 10-51T cassettes is ideal. Combined with a 40 or 42 tooth chainring, you’ll never run out of gears even on the steepest village roads or in the high mountains. Like the 1x12 variant with 10-45T, this group also features an integrated SHADOW-PLUS chain stabilizer for optimal chain security and an ON/OFF switch, allowing for quick and easy wheel removal in case of a flat.

Both 1x12 options use Micro Spline, Shimano's lightweight aluminum freehub design that perfectly combines with a small 10-tooth cog and features smaller, spaced teeth that reduce cog wear. The 1x12 Gravel chainrings and cranksets are available in three crank arm lengths so you can choose the ideal Shimano GRX setup for your needs and riding style.

Features - Shimano GRX RD-RX822 1x12 Speed Rear Derailleur

• Quiet and smooth shifting system for uneven terrain
• Adjustable chain stabilizer that prevents chain skip
• SHIMANO SHADOW RD+
• Frictionless and reliable shifting in changing terrain conditions
• Spring tension adapted for gravel
• Compatible with current DUAL-CONTROL shift/brake levers for road bikes

• RD-RX822-GS
  • max 45 tooth large cog
  • Works with 12-speed cassette 10-45
  • Better ground clearance (shorter cage)

• RD-RX822-SGS
  • max 51 tooth large cog
  • Works with 12-speed cassette 10-51

Product Features

• Use range:  Gravel, Cyclocross
• Group : GRX
• Model : RD-RX822
• Mounting:  Direct mount (conventional)
• Technology : Shadow RD+
• Gear ratios:

• 1x12 speed type GS (cassette 10-45)
• Type SGS 1x12 speed (cassette 10-51)

• Compatible chain:  12-speed HG
• Max.  Large cog teeth: 45 teeth (GS)/51 teeth (SGS)
• Min teeth . large cog: 45 teeth (GS)/51 teeth (SGS)
• Max.  Small cog teeth: 10 teeth
• Min. cog  small: 10 teeth
• Max. Front differential: 0 teeth
• Total capacity:  35 teeth (GS)/41 teeth (SGS)

Cage Length (select variant)

• Type-GS medium length
• Type-SGS long

Material

• Aluminum
• Steel
• Glass fiber reinforced plastic

Color

• Series color

Weight

• approx. 290 g/GS | 288 g/SGS (manufacturer specification)