GRX BRAKE LEVER 1X12s RX820 (Left)

Specifications

Manufacturer
Shimano
Name
GRX BRAKE LEVER 1X12s RX820 (Left)
Series
RX820
MPN
BL-RX820-L
Shifting Type
Cable
Slot consumption
All
Brake Type
Hydraulic Disc
Slots
Shifter Left
Front Speeds
1
Mount Type
Drop Bars
Groupset
GRX
Drivetrain Brand
Shimano
Side
Left
Rear Speeds
12

Shimano GRX BRAKE LEVER 1X12s RX820 (Left)

Shifter

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Compatibility

This Shimano GRX BRAKE LEVER 1X12s RX820 (Left) is a Shimano Road / Gravel shifter. It requires a 12-speed drivetrain and compatible components. It is designed for cable shifting systems. For best performance, use with other RX820 components, though it is mechanically compatible with the parts listed below.

Compatible Brake Calipers20

GRX - FLAT MOUNT - BRAKE CALIPERRecommended

Shimano

GRX - FLAT MOUNT - BRAKE CALIPER

  • Matches hydraulic disc standard
105 BRAKE CALIPERRecommended

Shimano

105 BRAKE CALIPER

  • Matches hydraulic disc standard
105 HYDRAULIC DISC BRAKE FRONT CALIPERRecommended

Shimano

105 HYDRAULIC DISC BRAKE FRONT CALIPER

  • Matches hydraulic disc standard
105 HYDRAULIC DISC BRAKE REAR CALIPERRecommended

Shimano

105 HYDRAULIC DISC BRAKE REAR CALIPER

  • Matches hydraulic disc standard
2-PISTON BRAKE CALIPER (BR-MT200)Recommended

Shimano

2-PISTON BRAKE CALIPER (BR-MT200)

  • Matches hydraulic disc standard
2-PISTON BRAKE CALIPER (BR-MT500)Recommended

Shimano

2-PISTON BRAKE CALIPER (BR-MT500)

  • Matches hydraulic disc standard
2-PISTON FLAT MOUNT BRAKE CALIPERRecommended

Shimano

2-PISTON FLAT MOUNT BRAKE CALIPER

  • Matches hydraulic disc standard
4-PISTON BRAKE CALIPER (BR-MT420)Recommended

Shimano

4-PISTON BRAKE CALIPER (BR-MT420)

  • Matches hydraulic disc standard
4-PISTON BRAKE CALIPER (BR-MT520)Recommended

Shimano

4-PISTON BRAKE CALIPER (BR-MT520)

  • Matches hydraulic disc standard
Apex 1 Hydraulic Disc BrakeRecommended

SRAM

Apex 1 Hydraulic Disc Brake

  • Matches hydraulic disc standard
Apex Disc BrakeRecommended

SRAM

Apex Disc Brake

  • Matches hydraulic disc standard
Brake Caliper (BR-M00B-160F)Recommended

LTWOO

Brake Caliper (BR-M00B-160F)

  • Matches hydraulic disc standard
Brake Caliper (BR-M00B-160R)Recommended

LTWOO

Brake Caliper (BR-M00B-160R)

  • Matches hydraulic disc standard
Brake Caliper (BR-M01B-160F)Recommended

LTWOO

Brake Caliper (BR-M01B-160F)

  • Matches hydraulic disc standard
Brake Caliper (BR-M01B-160R)Recommended

LTWOO

Brake Caliper (BR-M01B-160R)

  • Matches hydraulic disc standard
Brake Caliper (BR-R03A-140R)Recommended

LTWOO

Brake Caliper (BR-R03A-140R)

  • Matches hydraulic disc standard
Brake Caliper (BR-R03B-140R)Recommended

LTWOO

Brake Caliper (BR-R03B-140R)

  • Matches hydraulic disc standard
Brake Caliper (BR-R04A-160F)Recommended

LTWOO

Brake Caliper (BR-R04A-160F)

  • Matches hydraulic disc standard
Brake Caliper (BR-R04B-160F)Recommended

LTWOO

Brake Caliper (BR-R04B-160F)

  • Matches hydraulic disc standard
Brake Caliper (BR-R06A-140F)Recommended

LTWOO

Brake Caliper (BR-R06A-140F)

  • Matches hydraulic disc standard

Compatible Rear Derailleurs20

GRX REAR DERAILLEUR 12s (FOR 10-45T) Recommended

Shimano

GRX REAR DERAILLEUR 12s (FOR 10-45T)

  • Matches required 12-speed standard
  • Uses cable shifting type
GRX REAR DERAILLEUR 12s (FOR 10-51T)Recommended

Shimano

GRX REAR DERAILLEUR 12s (FOR 10-51T)

  • Matches required 12-speed standard
  • Uses cable shifting type
GRX REAR DERAILLEUR 12s (FOR 11-34/36T)Recommended

Shimano

GRX REAR DERAILLEUR 12s (FOR 11-34/36T)

  • Matches required 12-speed standard
  • Uses cable shifting type
Apex Eagle Rear DerailleurCompatible

SRAM

Apex Eagle Rear Derailleur

  • Matches required 12-speed standard
  • Uses cable shifting type
Apex XPLR Rear DerailleurCompatible

SRAM

Apex XPLR Rear Derailleur

  • Matches required 12-speed standard
  • Uses cable shifting type
AX Rear Derailleur (RD-A1210-L-A)Compatible

LTWOO

AX Rear Derailleur (RD-A1210-L-A)

  • Matches required 12-speed standard
  • Uses cable shifting type
AX Rear Derailleur (RD-A1210-L)Compatible

LTWOO

AX Rear Derailleur (RD-A1210-L)

  • Matches required 12-speed standard
  • Uses cable shifting type
DEORE REAR DERAILLEUR 1X12sCompatible

Shimano

DEORE REAR DERAILLEUR 1X12s

  • Matches required 12-speed standard
  • Uses cable shifting type
DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS)Compatible

Shimano

DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS)

  • Matches required 12-speed standard
  • Uses cable shifting type
DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-SGS)Compatible

Shimano

DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-SGS)

  • Matches required 12-speed standard
  • Uses cable shifting type
Eagle 70 Transmission DerailleurCompatible

SRAM

Eagle 70 Transmission Derailleur

  • Matches required 12-speed standard
  • Uses cable shifting type
Eagle 90 Transmission DerailleurCompatible

SRAM

Eagle 90 Transmission Derailleur

  • Matches required 12-speed standard
  • Uses cable shifting type
Eagle S100 DerailleurCompatible

SRAM

Eagle S100 Derailleur

  • Matches required 12-speed standard
  • Uses cable shifting type
Eagle S200 DerailleurCompatible

SRAM

Eagle S200 Derailleur

  • Matches required 12-speed standard
  • Uses cable shifting type
EGR Rear Derailleur (RD-EG1201-M-A)Compatible

LTWOO

EGR Rear Derailleur (RD-EG1201-M-A)

  • Uses cable shifting type
EGR Rear Derailleur (RD-EG1301-M-A)Compatible

LTWOO

EGR Rear Derailleur (RD-EG1301-M-A)

  • Uses cable shifting type
GRT Rear Derailleur (RD-GR1210-L-A)Compatible

LTWOO

GRT Rear Derailleur (RD-GR1210-L-A)

  • Matches required 12-speed standard
  • Uses cable shifting type
GRT Rear Derailleur (RD-GR1211-L-A)Compatible

LTWOO

GRT Rear Derailleur (RD-GR1211-L-A)

  • Matches required 12-speed standard
  • Uses cable shifting type
GX Eagle Rear DerailleurCompatible

SRAM

GX Eagle Rear Derailleur

  • Matches required 12-speed standard
  • Uses cable shifting type
NX Eagle Rear DerailleurCompatible

SRAM

NX Eagle Rear Derailleur

  • Matches required 12-speed standard
  • Uses cable shifting type

Compatible Cassettes20

105 HG CASSETTE 12sCompatible

Shimano

105 HG CASSETTE 12s

  • Matches required 12-speed standard
ALFINE SINGLE SPROCKETCompatible

Shimano

ALFINE SINGLE SPROCKET

DEORE HYPERGLIDE+ CASSETTE 12sCompatible

Shimano

DEORE HYPERGLIDE+ CASSETTE 12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DEORE XT HYPERGLIDE+ CASSETTE 12s M8100Compatible

Shimano

DEORE XT HYPERGLIDE+ CASSETTE 12s M8100

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DEORE XT HYPERGLIDE+ CASSETTE 12s M8200Compatible

Shimano

DEORE XT HYPERGLIDE+ CASSETTE 12s M8200

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DURA-ACE HYPERGLIDE+ CASSETTE 12s Compatible

Shimano

DURA-ACE HYPERGLIDE+ CASSETTE 12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
Force XG-1270 Cassette (CS-XG-1270-D1)Compatible

SRAM

Force XG-1270 Cassette (CS-XG-1270-D1)

  • Matches required 12-speed standard
  • Uses sram flattop standard
Force XG-1270 Cassette (CS-XG-1270-E1)Compatible

SRAM

Force XG-1270 Cassette (CS-XG-1270-E1)

  • Matches required 12-speed standard
  • Uses sram flattop standard
HG CASSETTE 12sCompatible

Shimano

HG CASSETTE 12s

  • Matches required 12-speed standard
  • Uses shimano hg standard
PG-1210 Eagle CassetteCompatible

SRAM

PG-1210 Eagle Cassette

  • Matches required 12-speed standard
  • Uses sram eagle standard
PG-1230 Eagle CassetteCompatible

SRAM

PG-1230 Eagle Cassette

  • Matches required 12-speed standard
  • Uses sram eagle standard
RED XG-1290 CassetteCompatible

SRAM

RED XG-1290 Cassette

  • Matches required 12-speed standard
  • Uses sram flattop standard
Rival XG-1250 CassetteCompatible

SRAM

Rival XG-1250 Cassette

  • Matches required 12-speed standard
  • Uses sram flattop standard
SLX HYPERGLIDE+ CASSETTE 12s Compatible

Shimano

SLX HYPERGLIDE+ CASSETTE 12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8100-12)Compatible

Shimano

ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8100-12)

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8101-12)Compatible

Shimano

ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8101-12)

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
XG-1275 Eagle Cassette (CS-XG-1275-B1)Compatible

SRAM

XG-1275 Eagle Cassette (CS-XG-1275-B1)

  • Matches required 12-speed standard
  • Uses sram eagle standard
XG-1275 Eagle Cassette (CS-XG-1275-C1)Compatible

SRAM

XG-1275 Eagle Cassette (CS-XG-1275-C1)

  • Matches required 12-speed standard
  • Uses sram eagle standard
XG-1295 Eagle Cassette (CS-XG-1295-A3)Compatible

SRAM

XG-1295 Eagle Cassette (CS-XG-1295-A3)

  • Matches required 12-speed standard
  • Uses sram eagle standard
XG-1295 Eagle Cassette (CS-XG-1295-B1)Compatible

SRAM

XG-1295 Eagle Cassette (CS-XG-1295-B1)

  • Matches required 12-speed standard
  • Uses sram eagle standard

Frequently Asked Questions

What fits with Shimano GRX BRAKE LEVER 1X12s RX820 (Left)?

Shimano GRX BRAKE LEVER 1X12s RX820 (Left) is compatible with brake calipers, rear derailleurs, front derailleurs, cassettes that match its technical standards. Most importantly, it requires matching 12-speed components.

Can I use a higher or lower speed chain with Shimano GRX BRAKE LEVER 1X12s RX820 (Left)?

No, Shimano GRX BRAKE LEVER 1X12s RX820 (Left) requires a 12-speed chain. Chains for different speeds have different external widths and internal profiles, which will cause poor shifting or mechanical interference.

Does this Shimano GRX BRAKE LEVER 1X12s RX820 (Left) work with electronic shifting like Di2 or AXS?

No, this is a mechanical cable-actuated component. Electronic systems use internal motors and proprietary signals that are physically and electrically incompatible with mechanical components.

Is Shimano GRX BRAKE LEVER 1X12s RX820 (Left) compatible with rim brakes?

No, Shimano GRX BRAKE LEVER 1X12s RX820 (Left) is designed specifically for hydraulic disc systems. The mounting standards and architectural requirements for disc brakes are completely different and cannot be mixed.

Does the mounting standard of Shimano GRX BRAKE LEVER 1X12s RX820 (Left) affect drivetrain compatibility?

The mounting standard (such as drop_bars) primarily determines how the part attaches to the bike frame or handlebars. It does not directly affect the mechanical shifting compatibility, as long as the speed and brand standards match.