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Sram Eagle 90 E-MTB Bosch groupset
Sram

Sram Eagle 90 E-MTB Bosch groupset

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Features of Sram Eagle 90 E-MTB Bosch

Product description of Sram Eagle 90 E-MTB Bosch groupset

Description summary

Experience mechanical shifting at its peak with the SRAM Eagle 90 E-MTB groupset. Engineered specifically for Bosch systems, it delivers unparalleled robustness with a fully rebuildable Full Mount derailleur. Shift flawlessly under full power thanks to the T-Type cassette and X-Sync technology, a signature of Eagle Transmission. Its revolutionary hangerless design and simple, guess-free setup make installation a breeze. With a wide 10-52t range and a durable E-MTB-approved chain, Eagle 90 is built to conquer any trail with precision and strength

Mechanical shifting at it’s best. Eagle 90 delivers the dream, and then some. Featuring the same Full Mount derailleur architecture as it’s AXS Transmission siblings, it is unquestionably robust. And for the just in case, the derailleur body features replaceable outer and inner parallelogram links, skid plates, and a tool-free threaded cage assembly, making it the most rebuildable derailleur we’ve ever built. At the heart of the system is a sleek and sturdy forged aluminum E-MTB crankset, with a drive-unit specific T-Type chainring. Shifting under load is a signature of Eagle Transmission, and this is made possible on 90 with an XS-1275 T-Type cassette that features full X-Sync technology, and a premium double-click T-Type Actuation mechanical shifter. For those inclined to DIY, mechanical Eagle Transmission has a revolutionary simple four step setup procedure Prepare. Hang. Tighten. Route. Featuring no limit screws, no b-tension, and no guesswork. Built to take you as far as your imagination and body will allow, Eagle 90 Transmission provides riders with an unparalleled ride experience.

Features:

- Hangerless Interface (UDH) frame compatibility only.
- SRAM/Brose and Bosch specific chainring and crankset offset variants with “Gap Cap” for a seamless between crank and ring. Includes clip-on guard.
- Eagle 90 shift lever features stealth architecture, and MMX compatibility for seamless pairing with SRAM brakes. Cockpit tidying Shift Housing/Brake Hose clip included.
- Shift lever is built with modern shift ergonomics and a premium textured aluminum lever touchpoint.
- Dedicated single-click variant required for E-MTB use.
- XG-1275 features 10-52t range and full X-SYNC technology for best inboard and outboard shifting performance under load.
- Full Mount Eagle 90 derailleur is the most rebuildable Eagle Transmission derailleur, with replaceable B-Knuckle, Inner/Outer Links, Bash Guards, Bushings, Cage, and Cage Assembly.
- Includes GX Eagle Transmission Flattop chain with solid pins, fully approved E-MTB use.

Specifications:

- Rear Derailleur: Eagle 90
- Shifter Right: Eagle 90
- Crank: Eagle 90 ISIS
- Crank arm length: 165mm
- Chainring: 36T DM
- Guard Included: Yes Aeroguard
- Chain: GX T-TYPE 126
- Cassette: XS 1275 T-TYPE 10-52

Specifications

Manual

Technical specifications of Sram Eagle 90 E-MTB Bosch

  • Cassette

    Xs 1275 T-Type 10-52

  • Chain

    Gx T-Type 126

  • Rear Derailleur

    Eagle 90

  • Shifters

    Eagle 90

  • Crankset

    Eagle 90 Isis

  • Color

    Silver

  • Recommended Use

    MTB Cycling

  • Recommended Use

    E-bikes

  • Electronic

    No

Features of Sram Eagle 90 E-MTB Bosch

Color Silver

Color

Silver

Recommended Use MTB Cycling

Recommended Use

MTB Cycling

E-bikes

E-bikes

Electronic No

Electronic

No

Key differentiators

Enables smooth shifting under full power thanks to the T-Type cassette and X-Sync technology.

Engineered specifically for Bosch e-bike systems for optimized integration.

Features a fully rebuildable Full Mount derailleur with replaceable components for enhanced durability.

Includes a durable, E-MTB-approved GX Eagle Transmission Flattop chain.

Wide 10-52t cassette range provides versatile gearing for various trail conditions.

Technology in Sram Eagle 90 E-MTB Bosch groupset

Energy rating

Warnings

/ 5

1 Reviews

What our customers are saying about Sram Eagle 90 E-MTB Bosch groupset

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Include AI Generated questions and answers

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

Is the Sram Eagle 90 groupset designed for electric mountain bikes?

Answer of Generated by AI and verified

Yes, this groupset is specifically engineered for E-bikes and MTB cycling. It features an E-MTB-approved chain and components designed to handle the demands of electric mountain biking.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

Is this a mechanical or electronic shifting groupset?

Answer of Generated by AI and verified

The Sram Eagle 90 is a mechanical shifting groupset. It does not feature electronic or wireless shifting.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

What material is the crankset made from?

Answer of Generated by AI and verified

The E-MTB crankset included in this groupset is made from forged aluminum, providing a balance of strength and durability.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

Is the Sram Eagle 90 E-mtb Bosch Groupset worth the investment for mountain biking?

Answer of Generated by AI and verified

The Sram Eagle 90 E-mtb Bosch Groupset offers robust mechanical shifting with a wide 10-52t cassette range, making it ideal for tackling diverse mountain terrains. Its durable construction and user-friendly setup enhance the riding experience, providing great value for mountain biking users.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

What is the gear range of the cassette in this groupset?

Answer of Generated by AI and verified

This groupset includes a 12-speed XS 1275 T-Type cassette with a wide gear range of 10-52 teeth.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

What crank length is included with the Sram Eagle 90 groupset?

Answer of Generated by AI and verified

This groupset comes with a forged aluminum crankset that has a crank length of 165mm.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

How many teeth are on the chainring?

Answer of Generated by AI and verified

The groupset is equipped with a direct mount (DM) chainring that has 36 teeth.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

What technology does this groupset use for shifting under load?

Answer of Generated by AI and verified

The groupset utilizes a T-Type cassette with full X-Sync technology, which is designed to allow for smooth and reliable shifting even while under full power from the motor.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

Can I use this groupset for trail riding on my e-MTB?

Answer of Generated by AI and verified

Absolutely. The Sram Eagle 90 groupset is engineered for MTB cycling and E-bikes, with robust components like a fully rebuildable Full Mount derailleur and an E-MTB-approved chain, making it well-suited for demanding trail conditions.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

Which e-bike systems is the Sram Eagle 90 groupset compatible with?

Answer of Generated by AI and verified

This specific version of the Sram Eagle 90 E-MTB groupset is engineered for compatibility with Bosch e-bike systems.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

What type of frame is required for the rear derailleur?

Answer of Generated by AI and verified

The Eagle 90 rear derailleur uses a hangerless interface and is only compatible with frames that feature a UDH (Universal Derailleur Hanger) design.

* Generated by AI based on customer and product data

2026-09-10

Generated by AI and verified

Sram Eagle 90 E-MTB Bosch groupset

Does this groupset include a chainring guard?

Answer of Generated by AI and verified

Yes, this groupset includes a clip-on guard for the chainring.

* Generated by AI based on customer and product data

Ask a technical question about this product

Frequently bought together
Best sellers

Use cases

Upgrading E-Mountain Bikes with Bosch Systems 100% Fit

This groupset is specifically designed for E-MTB applications, particularly for bikes using a Bosch motor system. The E-MTB-approved chain and durable forged aluminum components provide a reliable upgrade for committed riders looking for solid performance.

Intended for E-bikes,E-MTB-approved chain,Forged aluminum crankset,12-speed gearing

All-Mountain and Trail Riding on E-Bikes 90% Fit

The wide 10-52t cassette range offers versatile gearing for tackling both steep climbs and fast descents common in trail and all-mountain riding. The robust construction ensures it can handle the demands of varied off-road terrain.

10-52t cassette range,12-speed drivetrain,Forged aluminum material,Intended for MTB Cycling

Building a Custom E-MTB 80% Fit

For riders building a custom E-MTB around a Bosch system, this groupset provides a complete and compatible solution. The inclusion of components like the crankset, derailleur, cassette, and shifters simplifies the build process, offering a balanced and reliable drivetrain.

Complete groupset (crankset, derailleur, cassette, shifters),165mm crank length,Direct mount and full mount compatibility,ISIS crank interface

Replacing a Worn or Lower-Tier E-MTB Drivetrain 85% Fit

This Sram Eagle groupset serves as a reliable upgrade from a stock or entry-level drivetrain. It offers a solid performance boost in shifting and durability, making it a great choice for regular riders looking to enhance their bike's capabilities without moving to a top-tier electronic system.

Sram Eagle series components,12-speed system,Forged aluminum construction,E-MTB-approved chain

Best for

Best for E-MTB Performance Upgrades

This groupset delivers exceptional shifting accuracy and control, making it a solid upgrade for riders who demand precision on the trail.

Precision Shifting & Control: 90%

Ideal for Enhancing Your Ride Experience

With its focus on smooth gear changes and reliable performance, this groupset is designed to maximize the enjoyment and fun of every E-MTB ride.

Great All-Rounder for Regular Trail Use

Offering a balanced combination of smooth shifting and durable forged aluminum components, this is a reliable choice for consistent weekend trail adventures.

A Solid Choice for Tech-Minded Riders

Featuring a 12-speed system with a wide 10-52t cassette range and X-SYNC technology, this groupset provides the advanced mechanical performance that detail-oriented riders appreciate.

Benefits

FunctionalShift with Confidence Under Load

Experience superior shifting performance, even under the high-torque demands of E-MTB riding. The system's full X-SYNC technology is engineered to deliver the best inboard and outboard shifting, giving you the confidence to tackle any terrain without hesitation.

Speed: 12-speed (XG-1275 features 10-52t range and full X-SYNC technology for best inboard and outboard shifting performance under load.)

Intended use: E-bikes

MTB Cycling

Ideal buyer profiles

The E-MTB Rider

This rider is dedicated to maximizing the performance of their E-MTB on challenging trails. They prioritize precise control, durability under load, and components that enhance their riding experience without compromise.

This groupset is ideal for them because it's specifically designed for E-MTB use, featuring a robust forged aluminum crankset and a chain approved for E-MTB applications. The 12-speed, 10-52t cassette with X-SYNC technology ensures excellent shifting performance even under the high torque of an e-bike motor, while the included Aeroguard adds protection and a clean look.

The Upgrader

This individual enjoys upgrading their bike with the latest compatible components to improve functionality and aesthetics. They are knowledgeable about component compatibility, especially for specialized systems like Bosch E-bikes, and seek a cohesive, well-integrated groupset.

The Sram Eagle 90 E-mtb Bosch Groupset provides a complete, matched system from a single brand, ensuring seamless integration. With components like the Eagle 90 ISIS crankset, rear derailleur, and shifters, it offers the cohesive, high-quality upgrade this rider is looking for, specifically tailored for Bosch-powered E-MTBs.

The Recreational Trail Rider

This person rides their E-MTB for fun, fitness, and exploring local trails on weekends. They want a reliable and user-friendly drivetrain that performs consistently without requiring constant adjustment, allowing them to focus on enjoying the ride.

This groupset enhances riding pleasure with its smooth and dependable 12-speed shifting. Its durable construction is built to handle the demands of E-MTB cycling, giving the recreational rider confidence on the trail and reducing maintenance concerns, which lets them simply enjoy their time outdoors.

Competitive features

The Sram Eagle 90 E-MTB Bosch Groupset is a mechanical shifting system engineered specifically for integration with Bosch e-bike systems. It stands out for its robust, hangerless Full Mount derailleur design, which is fully rebuildable for enhanced longevity. Unlike electronic systems, it offers the tactile feedback and simplicity of mechanical shifting, combined with modern features like X-Sync technology for reliable performance under the high torque of an e-bike motor.

Where it excels

Engineered specifically for Bosch E-MTB systems, ensuring seamless integration and performance. Features a highly robust, fully rebuildable Full Mount derailleur with replaceable parts, offering exceptional durability and serviceability. Provides crisp, reliable mechanical shifting with a wide 10-52t gear range, suitable for tackling varied trail conditions.

Consider alternatives if...

This is a mechanical groupset. Riders seeking the latest electronic shifting, wireless operation, or advanced customization features may prefer an AXS or Shimano Di2 system. The groupset is specifically designed for Bosch motor systems. If your e-bike uses a Brose, SRAM, or other motor, you will need a different version of the Eagle 90 groupset or another compatible alternative.

Verdict

The Sram Eagle 90 E-MTB Bosch Groupset is an excellent choice for e-mountain bikers using a Bosch system who prioritize durability, reliability, and the feel of mechanical shifting. Its rebuildable, robust design is built to withstand the demands of E-MTB use, offering precise shifting even under full power. While it lacks the electronic features of higher-end systems, it delivers top-tier mechanical performance tailored for its specific application.

Specs comparison

Favorite On Favorite Off
Materialforged aluminumforged aluminum
Intended UseE-bikes, MTB CyclingE-bikes, MTB Cycling
ChainGx T-Type 126Gx T-Type 126
Rear DerailleurEagle 90Eagle 90
CassetteXs 1275 T-Type 10-52Xs 1275 T-Type 10-52
CranksetEagle 90 ISISEagle 90 ISIS
ElectronicNoNo
Guard IncludedYes AeroguardYes Aeroguard

Specs vs competitors

Favorite On Favorite Off
Favorite On Favorite Off
Favorite On Favorite Off
Materialforged aluminumaluminumcarbonsteel
Intended UseE-bikes, MTB CyclingMTB CyclingMTB CyclingMTB Cycling
ChainGx T-Type 12612-speed12-speed12-speed
Rear DerailleurEagle 90Shimano--
ElectronicNoYesYesYes
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