Shimano Rear Derailleur GRX RD-RX820 2x12 Speed
Shimano GRX RD-RX820 12-Speed Rear Derailleur Max 36T The GRX RD-RX820 12-Speed Rear Derailleur Max 36T is compatible with 11-34T and 11-36T 12-speed cassettes, providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. The SHIMANO GRX 12-speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. And the chain tensioner has an ON/OFF switch for outings on smooth surfaces.
Shimano GRX RD-RX820 12-Speed Rear Derailleur Max 36T The GRX RD-RX820 12-Speed Rear Derailleur Max 36T is compatible with 11-34T and 11-36T 12-speed cassettes, providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. The SHIMANO GRX 12-speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. And the chain tensioner has an ON/OFF switch for outings on smooth surfaces.
Shimano GRX RD-RX820 12-Speed Rear Derailleur Max 36T The GRX RD-RX820 12-Speed Rear Derailleur Max 36T is compatible with 11-34T and 11-36T 12-speed cassettes, providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. The SHIMANO GRX 12-speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. And the chain tensioner has an ON/OFF switch for outings on smooth surfaces.
Shimano GRX RD-RX820 12-Speed Rear Derailleur Max 36T The GRX RD-RX820 12-Speed Rear Derailleur Max 36T is compatible with 11-34T and 11-36T 12-speed cassettes, providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. The SHIMANO GRX 12-speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. And the chain tensioner has an ON/OFF switch for outings on smooth surfaces.
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The lowest price for Shimano Rear Derailleur GRX RD-RX820 2x12 Speed right now is $84.27 at AliExpress.com - AliExpress-226247430, compared across 30 retailers.
The all-time low was $84.27 on 24 Oct 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 24 Oct 2026.
Last updated at 24/10/2026 06:29:51
Shimano FC-RX820-1 6.8 inches (172.5 mm) 42T 12S
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SHIMANO GRX RX820 Rear Derailleur 12 Speed RD-RX820 Rear Derailleur SHADOW RD+ MAX 36T For Gravel
Delivery $15.18
Shimano RX820 GRX 12Spd Rear Derailleur OEM - JUST RIDE Nerang
Free delivery
Shimano GRX RD-RX820 12-speed | Evolution Bikes
Delivery $110.95
Shimano (Cycling) Rd-rx820 Grx Rear Derailleur 2x12 Speed Irdrx820
Delivery between 30 Oct – 3 Nov $108.82
SHIMANO - Rear Derailleur RD-RX820 Not boxed Black 12s
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Shimano GRX RD-RX820 12S rear derailleur
Delivery between Mon – Tue $39.85
Shimano Grx Rd-rx820 2x12-speed Gravel Road Bike Rear Derailleur For
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano GRX RD-RX820 2x12V Rear Derailleur
Delivery $63.99
RD-RX820 REAR DERAILLEUR GRX SHADOW+ 12-SPEED 36T MAXIMUM 2x12
Delivery between 28 Oct – 5 Nov $19
| Number Of Speeds | 12-speed |
| Shifting Type | Mechanical |
| Size | Wider-range (11-36T cassette), More compact (10-45T cassette), Wider range (10-51T cassette) |
| Weight | 270 g (manufacturer information) |
| Chainline | 2.5 mm offset (compared to road components) |
Shimano FC-RX820-1 6.8 inches (172.5 mm) 42T 12S
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
SHIMANO GRX RX820 Rear Derailleur 12 Speed RD-RX820 Rear Derailleur SHADOW RD+ MAX 36T For Gravel
Delivery $15.18
Shimano RX820 GRX 12Spd Rear Derailleur OEM - JUST RIDE Nerang
Free delivery
Shimano GRX RD-RX820 12-speed | Evolution Bikes
Delivery $110.95
Shimano (Cycling) Rd-rx820 Grx Rear Derailleur 2x12 Speed Irdrx820
Delivery between 30 Oct – 3 Nov $108.82
| Number Of Speeds | 12-speed |
| Shifting Type | Mechanical |
| Size | Wider-range (11-36T cassette), More compact (10-45T cassette), Wider range (10-51T cassette) |
| Weight | 270 g (manufacturer information) |
| Chainline | 2.5 mm offset (compared to road components) |
