SRAM Eagle 90 Transmission Derailleur

Rear Derailleur

Eagle 90 Transmission Derailleur
Buy at Tweeks Cycles

Specifications

Manufacturer
SRAM
Name
Eagle 90 Transmission Derailleur
MPN
RD-90-A1
Groupset
Eagle 90
Rear Speeds
12
Front Speeds
1
Drivetrain Brand
Sram
Shifting Type
Cable
Max Cog (T)
52
Cage Length
Long
Chain Standard
SRAM Eagle
Mount Standard
UDH[1]
Weight (g)
395
Sources
  1. [1] cyclingweekly.com, checked 9 Oct 2026: Mount Standard

Offers

  • Tweeks Cycles
    Tweeks Cycles£149.00
    Buy
  • Tredz
    Tredz£149.55
    Buy

Compatibility

SRAM Eagle 90 Transmission Derailleur is a SRAM rear derailleur. It is a 12-speed component. It uses Cable shifting. Everything listed below was matched on a specification we hold for both parts: the interface each pairing actually depends on, such as freehub body, speed count, actuation or mounting standard. Where we could not verify that interface, the part is left out rather than assumed to fit.

Chains for this derailleur20

Eagle 70 Transmission Flattop ChainMechanically compatible

SRAM

Eagle 70 Transmission Flattop Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
Eagle S100 ChainMechanically compatible

SRAM

Eagle S100 Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
Eagle S200 ChainMechanically compatible

SRAM

Eagle S200 Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
Eagle S500 ChainMechanically compatible

SRAM

Eagle S500 Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
GX Eagle ChainMechanically compatible

SRAM

GX Eagle Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
GX Eagle Transmission Flattop ChainMechanically compatible

SRAM

GX Eagle Transmission Flattop Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
NX Eagle ChainMechanically compatible

SRAM

NX Eagle Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
X0 Eagle Transmission Flattop ChainMechanically compatible

SRAM

X0 Eagle Transmission Flattop Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
X01 Eagle ChainMechanically compatible

SRAM

X01 Eagle Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
XX Eagle Transmission Flattop ChainMechanically compatible

SRAM

XX Eagle Transmission Flattop Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
XX SL Eagle Transmission Flattop ChainMechanically compatible

SRAM

XX SL Eagle Transmission Flattop Chain

  • Both are 12-speed
  • Both use the SRAM Eagle standard
XX1 Eagle Chain (CN-EAGL-XX1-A1)Mechanically compatible

SRAM

XX1 Eagle Chain (CN-EAGL-XX1-A1)

  • Both are 12-speed
  • Both use the SRAM Eagle standard
XX1 Eagle Chain (CN-EAGL-XX1-A2)Mechanically compatible

SRAM

XX1 Eagle Chain (CN-EAGL-XX1-A2)

  • Both are 12-speed
  • Both use the SRAM Eagle standard
XX1 Eagle Chain (CN-EAGL-XX1-A3)Mechanically compatible

SRAM

XX1 Eagle Chain (CN-EAGL-XX1-A3)

  • Both are 12-speed
  • Both use the SRAM Eagle standard
DLC 12Shares a standard

KMC

DLC 12

  • Both are 12-speed
e12Shares a standard

KMC

e12

  • Both are 12-speed
K-FORCE LIGHT MTB 12 SPEED CHAINShares a standard

FSA

K-FORCE LIGHT MTB 12 SPEED CHAIN

  • Both are 12-speed
WAX DLC 12Shares a standard

KMC

WAX DLC 12

  • Both are 12-speed
WAX TT 12Shares a standard

KMC

WAX TT 12

  • Both are 12-speed
WAX X12Shares a standard

KMC

WAX X12

  • Both are 12-speed

Shifters that drive this derailleur8

Eagle 90 Transmission ShifterRecommended

SRAM

Eagle 90 Transmission Shifter

  • Both are 12-speed
  • Both use cable actuation
Eagle 90 Transmission Shifter | Single ClickRecommended

SRAM

Eagle 90 Transmission Shifter | Single Click

  • Both are 12-speed
  • Both use cable actuation
Eagle 70 Transmission Shifter (SL-70-A1)Mechanically compatible

SRAM

Eagle 70 Transmission Shifter (SL-70-A1)

  • Both are 12-speed
  • Both use cable actuation
Eagle 70 Transmission Shifter (SL-70-A2)Mechanically compatible

SRAM

Eagle 70 Transmission Shifter (SL-70-A2)

  • Both are 12-speed
  • Both use cable actuation
Eagle 70 Transmission Shifter | Single Click (SL-70-PA-A1)Mechanically compatible

SRAM

Eagle 70 Transmission Shifter | Single Click (SL-70-PA-A1)

  • Both are 12-speed
  • Both use cable actuation
Eagle 70 Transmission Shifter | Single Click (SL-70-PA-A2)Mechanically compatible

SRAM

Eagle 70 Transmission Shifter | Single Click (SL-70-PA-A2)

  • Both are 12-speed
  • Both use cable actuation
SX Eagle Trigger ShifterMechanically compatible

SRAM

SX Eagle Trigger Shifter

  • Both are 12-speed
  • Both use cable actuation
SX Eagle Trigger Shifter | Single ClickMechanically compatible

SRAM

SX Eagle Trigger Shifter | Single Click

  • Both are 12-speed
  • Both use cable actuation

Cassettes for this derailleur14

PG-1210 Eagle CassetteMechanically compatible

SRAM

PG-1210 Eagle Cassette

  • Both are 12-speed
  • Both are SRAM drivetrain parts
PG-1230 Eagle CassetteMechanically compatible

SRAM

PG-1230 Eagle Cassette

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XG-1275 Eagle Cassette (CS-XG-1275-B1)Mechanically compatible

SRAM

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

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XG-1275 Eagle Cassette (CS-XG-1275-C1)Mechanically compatible

SRAM

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

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XG-1295 Eagle Cassette (CS-XG-1295-A3)Mechanically compatible

SRAM

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

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XG-1295 Eagle Cassette (CS-XG-1295-B1)Mechanically compatible

SRAM

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

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XG-1299 Eagle Cassette (CS-XG-1299-A2)Mechanically compatible

SRAM

XG-1299 Eagle Cassette (CS-XG-1299-A2)

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XG-1299 Eagle Cassette (CS-XG-1299-B1)Mechanically compatible

SRAM

XG-1299 Eagle Cassette (CS-XG-1299-B1)

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XG-1299 Eagle Cassette (CS-XG-1299-C1)Mechanically compatible

SRAM

XG-1299 Eagle Cassette (CS-XG-1299-C1)

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XS-1270 Eagle Transmission CassetteMechanically compatible

SRAM

XS-1270 Eagle Transmission Cassette

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XS-1275 Eagle Transmission CassetteMechanically compatible

SRAM

XS-1275 Eagle Transmission Cassette

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XS-1295 Eagle Transmission CassetteMechanically compatible

SRAM

XS-1295 Eagle Transmission Cassette

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XS-1297 Eagle Transmission CassetteMechanically compatible

SRAM

XS-1297 Eagle Transmission Cassette

  • Both are 12-speed
  • Both are SRAM drivetrain parts
XS-1299 Eagle Transmission CassetteMechanically compatible

SRAM

XS-1299 Eagle Transmission Cassette

  • Both are 12-speed
  • Both are SRAM drivetrain parts

Frequently Asked Questions

What fits SRAM Eagle 90 Transmission Derailleur?

On this page we list chains for this derailleur, shifters that drive this derailleur, cassettes for this derailleur. Each listing was matched on a specification we hold for both parts; anything we could not verify is omitted rather than assumed to fit.

Can I use a higher or lower speed chain with SRAM Eagle 90 Transmission Derailleur?

No. SRAM Eagle 90 Transmission Derailleur is a 12-speed component and needs a 12-speed chain. Chains for different speed counts have different external widths and inner-plate profiles, which causes poor shifting or interference with the neighbouring sprockets.

Does SRAM Eagle 90 Transmission Derailleur work with electronic shifting like Di2 or AXS?

No. SRAM Eagle 90 Transmission Derailleur is mechanical, cable-actuated. Electronic groups use internal motors and proprietary signalling, so there is no mechanical or electrical path between the two.