SRAM SPMB2 Eagle AXS Transmission User Manual

Eagle AXS Transmission
USER MANUAL

SPMB2 Eagle AXS Transmission

SAFETY INSTRUCTIONS
You must read and understand the Safety Instructions document included with your product before proceeding with installation. Improperly installed components are extremely dangerous and could result in severe and/or fatal injuries. If you have any questions about the installation of these components, consult a qualified bicycle mechanic. This document is also available on www.sram.com.
The bicycle frame must be compatible with the UDH hanger assembly. The thru axle and wheel must be compatible with the bicycle frame and UDH hanger assembly. Apply grease only to the thru axle threads. Do not apply grease to the UDH hanger or bolt.
NOTICE
This manual is a complete system installation guide, from unboxing each component to heading out for a ride. Complete the installation and setup in the order described in the manual. Do not begin a new section before completing the previous sections.
AXS components are only compatible with other AXS components. Consult the Compatibility Map AXS Components for compatibility information.
Consult www.sram.com/service whenever a separate manual is referenced in this document. DRAFT

Tools and Supplies

Highly specialized tools and supplies are required for the installation of your SRAM components. We recommend that you have a qualified bicycle mechanic install your SRAM components.

SRAM AXS App

After your SRAM AXS components have been paired and installed on your bicycle, download the SRAM AXS app, available for free in the app stores. Use the app to create your account, add your components, and customize your SRAM AXS experience. For component customization within the SRAM AXS app, all SRAM AXS and RockShox AXS components installed on a single bicycle must be paired together to create one system. For multi-system pairing, refer to System Pairing. Through the app, you will be able to:

• Change settings for your components
• Receive notifications for new product features and firmware updates
• Access product data and recommended service intervals

e-MTB/Pedelec Shifting and Multi-shift

NOTICE
SRAM components are designed for use only on bicycles that are pedal powered or pedal assisted (e-MTB/Pedelec).
SRAM Eagle AXS systems have multishift functionality disabled by default. To protect the components from damage and preserve the warranty, an Eagle Chain, Cassette, and AXS Rear Derailleur must be used with the SRAM AXS Controller’s Multi-shift disabled when used on e-MTB/ Pedelec style bicycles.
To enable the Multi-shift function, navigate to the system’s Drivetrain Settings within the SRAM AXS app.
The complete SRAM Warranty is available at www.sram.com.

SRAM AXS Controller

a. Left MatchMaker X (MMX) Bridge
b. Right MatchMaker X (MMX) Bridge
c. Left and Right Infinity Clamp
d. Controller Buttons
e. AXS Button (Pairing)
f. LED Indicator
g. Battery Cover

Eagle AXS Transmission

Derailleur
UPDATE EXPLODED VIEW

SRAM Battery

NOTICE
Hands and gloves must be clean before handling the SRAM battery. Contact with sunscreen or hydrocarbon cleaners may cause the battery to crack.

Battery Charging

Remove the battery cover from the battery, and charge the battery.
Consult the SRAM Battery and Charger user manual for charging instructions, battery maintenance, and traveling guidelines.
NOTICE
Do not discard the battery cover. To protect the battery terminals, install the battery cover on the battery when it is not on the charger or derailleur.

| Remove/Loosen

---|---
| Install

| Adjust

NOTICE
Do not discard the derailleur battery block (A) or the battery cover (B). To prevent battery depletion during transportation, remove the battery and install the derailleur battery blocks and battery covers. Failure to cover the battery and derailleur terminals could result in damage to the terminals.

| Remove/Loosen
---|---
| Adjust

Insert the fully charged battery into the derailleur and close the battery latch. When installed correctly, the latch will snap into place.

| Remove/Loosen

---|---
| Install

| Adjust

System Pairing

Each AXS system has a master component that begins and ends the pairing session.
A SRAM AXS System Controller must be paired with the Eagle AXS Transmission rear derailleur master component. Pairing allows the controller to communicate when a shift command is transmitted. Up to two SRAM AXS System Controllers and two Wireless
Blips can be paired into the system.
Additional AXS systems can be combined to create one AXS system. To combine AXS systems, begin pairing and end pairing with any one AXS master component (Reverb XS or SRAM AXS rear derailleur).

Begin the pairing session at the rear derailleur. Press and hold the AXS button until the green LED blinks slowly, then release.
The pairing session will time out after 30 seconds of inactivity.

For bicycle setups using two AXS pod controllers, pair the right controller first. Press and hold the AXS button on the controller until the green LED blinks quickly, then release.

| Press and hold
---|---

Press and release the AXS button on the rear derailleur to end the pairing session, or wait 30 seconds for the pairing session to time out. The green LED will stop blinking.
The pairing process does not need to be repeated when batteries are removed and/ or replaced.
The pairing process must be repeated if any components are replaced, added, or removed.
Press & release

AXS Button Functions

The AXS button has different functions that vary from component to component. Descriptions of each function can be found in their respective sections.

Shifting

Use the SRAM AXS App to personalize your system’s logic.

To move the derailleur inboard to a larger cog, press the controller paddle downward. Press and hold the paddle for multiple shifts.

To move the derailleur outboard to a smaller cog, press the controller paddle upward, or press down on the forward paddle. Press and hold the paddle for multiple shifts.

| Adjust
---|---

AXS Button Shifting

Press and release the AXS button on the rear derailleur once to move the derailleur outboard one position, or twice quickly to move inboard one position.

| Press & release
---|---
| Double press

Pod Controller Installation

Infinity Clamp

Position the clamp in the left handlebar position (1a) or the right handlebar position (1b) before proceeding. Install the first paired controller on the right side (1b).

|
---|---
|

Install the pod controller with the pointed tip aligned with the open slot in the clamp. Loosely install the bolt in the clamp.

| Adjust
---|---
| Remove/Loosen
| Install

⚠WARNING – CRASH HAZARD
Make sure the pod contoller does not obstruct the brake lever throw.

| Friction Paste
---|---
| Install
| Adjust
| Torque

MMX Bridge

Install the left bridge (1a) for the left handlebar position (1a) or the right bridge (1b) for the right handlebar position. Install the first paired controller on the right side (1b).

Install the pod controller with the pointed tip aligned with the open slot in the clamp. Loosely install the bolt in the clamp.

| Adjust
---|---
| Remove/Loosen
| Install

| Friction Paste
---|---
| Install
| Torque

⚠WARNING – CRASH HAZARD
Make sure the pod contoller does not obstruct the brake lever throw.

| Adjust
---|---
| Torque

Cassette Installation

Remove the thru axle and wheel according to the manufacturer’s instructions.

| Remove/Loosen
---|---

SRAM XD
NOTICE
Use a tool with a guide pin to prevent damage to the components.
Cassette lockring tool splines must fully engage the cassette lockring or locktube (XD). Splines must be between 7 and 8 mm in length for XD cassettes.
If there is lateral play or movement in the cassette after tightening it, contact your SRAM dealer.
SRAM XD cassettes are compatible with the SRAM XD driver body and with the XDR driver body using a 1.85 mm spacer.

Install the cassette onto the driver body until it is fully seated with the splines engaged, then tighten the cassette.
NOTICE
Grease is critical to prevent the cassette from seizing onto the driver body. Make sure the hub driver body and cassette interface are free of dirt and debris.

| InstalarGrease
---|---
| Install
| Torque

Crankset Installation

Consult the SRAM DUB MTB and Road Cranksets and Bottom Brackets user manual at www.sram.com/service for crankset and bottom bracket installation before proceeding.

| Install
---|---

Chain and Setup Key Guide

It is recommended to size your chain and determine the Setup Key position before proceding to the Eagle Transmission Setup. Use the SRAM AXS App Chain and Setup Key Guide to calculate the recommended chain length and Rear Derailleur Setup Key position for your bicycle. If your bicycle model is not in the database, you will need to find or measure the chainstay length of your bicycle. Use a chain breaker tool to break the chain at the inner link.
⚠WARNING – CRASH HAZARD
Failure to size or connect the chain properly may lead to chain failure or cause the rider to crash, resulting in serious injury and/or death. (old language) Failure to follow setup recommendations could result in damage to your rear derailleur and/or bicycle frame. (app language)

UDH Removal

The UDH must be removed from the frame before derailleur installation.

Turn the UDH bolt clockwise to remove it from the hanger threads. Remove the frame-specific UDH washer.
NOTICE
The UDH bolt is left-hand threaded. To loosen the bolt, turn clockwise.
Turn the UDH bolt clockwise to remove it from the hanger threads. Remove the frame-specific UDH washer.

| Remove/Loosen
---|---

Rotate the UDH hanger backward to unseat the hanger from the pocket.

| Adjust
---|---
| Remove/Loosen

Eagle Transmission Setup

1a. Press the AXS button to shift the rear derailleur into the outboard position. 1b. Put the rear derailleur cage in the lock position.
2a. Install the frame bushing into the hangerless interface.
2b. There may be a washer between the frame on bikes with pivots concentric to the axle (or split pivot bike?- need help with wording).

| Adjust
---|---
| Install

3a. Install the derailleur with the (full mount or sandwich interface) sliding over the hangerless interface.
3b. Install and tighten the mounting bolt clockwise to snug.
3c. Loosen the mounting bolt counterclockwise one full turn.

| Install
---|---
| Remove/Loosen

4a. Apply grease to the thru axle threads before axle installation.
4b. Install the thru axle and wheel according to the manufacturer’s instructions, and tighten handtight (4c).
4d. Loosen the thru axle bolt counterclockwise one full turn.

| Grease
---|---
| Install
| Remove/Loosen

5a. Press the AXS controller button to shift the rear derailleur into the Setup Cog, gear 7.
5b. Remove the rear derailleur Setup Key.
Place the rear derailleur Setup Key in the correct position for your bicycle as determined in the Chain and Setup Key Guide in the SRAM AXS app: Position 1 // SAG (5c) or Position 2 (5d).

| Adjust
---|---

6a. Route the sized Eagle T-Type chain through the derailleur pulleys with the flat edge of the chain facing away from the cassette. Make sure to route the chain below the tab in the cage.

| Adjust
---|---
| Install

6b. Pull each end of the chain together and install the PowerLock.
6c. Press the PowerLock connector links together.
NOTICE
The arrow must point in the direction of chain travel before locking the PowerLock into place. Once locked, the PowerLock cannot be disconnected.

| Adjust
---|---
| Install

6d. Rotate the crank until the PowerLock is above the chainstay.

| Adjust
---|---
| Install

Check that the two halves of the PowerLock are properly aligned.
6e. Apply the rear brake and firmly push the crank arm down to lock the PowerLock. You should hear and feel the PowerLock click into place.
6f. Check the PowerLock by hand to make sure it moves freely.
⚠CAUTION
The PowerLock is designed for one-time use only. The PowerLock can only be removed with master link pliers and must not be reused. Install a new PowerLock each time a new chain is installed.

| Adjust
---|---
| Install

SAG Category Bicycles

NOTICE
For SAG Category bicycles, the chain tension step must be performed with the rear shock in sag position. Compress the rear suspension to sag before tensioning the chain. Failure to follow this could result in damage to your derailleur and/or frame.

| Adjust
---|---

7a. With the derailleur in the Setup Cog, tension the chain by pulling straight back on the lower portion of the derailleur cage.
7b. Tighten the B-bolt while applying tension to the chain.

| Adjust
---|---
| Torque

Tighten the rear axle to torque according to the frame manufacturer’s instructions. Release the upper pulley wheel.

| Torque
---|---

9a. Rotate the cranks slowly and press downward on the AXS Controller paddle and shift the derailleur all the way inboard.
9b. Continue to rotate the cranks and press upward on the paddle and shift the derailleur all the way outboard.
The rear derailleur Cage Lock will automatically release during the outboard shifting.

| Adjust
---|---

**Derailleur Trimming

**

SRAM AXS derailleurs can be trimmed to align the pulley wheels of the derailleur to the cassette cogs.
Trim your derailleur manually inboard or outboard below or use the AutoTrim feature in the SRAM AXS App to let the derailleur find its optimal position.

Manual Trim

Battery Overview

Battery Charge LED Indicator
The LED illuminates when a shift is performed. The color of the LED indicates the ride time remaining. Consult the SRAM Battery and Charger user manual for charging instructions.
The LED on the derailleur will blink red and green when a shift has been rejected. Shifts can be rejected when the temperature is below -15 °C.

| 3-12 months
---|---
| 1-3 months
| <1 month

| 5-25 hours
---|---
| 1.5-5 hours
| < 1.5 hours
| Rejected Shift

Controller Battery Replacement

Make sure the controller is clean before opening the battery latch. Use a damp cloth to wipe off any dirt and debris from the control. Clean the components with soap and water only. Rinse thoroughly with water and allow the parts to dry completely before opening.
⚠WARNING
Consult the battery manufacturer for safe handling instructions. Keep the battery out of reach of children. Do not put the battery in your mouth. If ingested, seek medical attention immediately. Do not use sharp objects to remove batteries.

Turn the battery cover counter-clockwise to open and remove the cover.
Remove the battery.
NOTICE
To prevent moisture damage do not remove the battery cover o-ring seal.

| Adjust
---|---
| Remove/Loosen
| |
---|---|---

Reinstall the battery cover. Turn the cover clockwise to lock it into place.

| Adjust
---|---
| Install

Maintenance

We recommend that you periodically clean your electrical components. Use a damp cloth to wipe off any dirt and debris. Clean the components with soap and water only. Rinse thoroughly with water and allow the parts to dry, then lubricate the chain.
NOTICE
Remove the SRAM derailleur battery and install the derailleur battery block before cleaning.
Do not clean the components with a power washer. Do not use acidic or grease- dissolving agents on your electrical components. Do not soak or store your electrical components in any cleaning product or liquid. Chemical cleaners and solvents can damage plastic  components.

Storage and Transportation
Storage conditions: Temperature from -40°C to 70°C, humidity from 10% to 85%
Operating conditions: Temperature from -10°C to 40°C, humidity from 0% to 100%
Service life: 5 years
NOTICE
Check the battery level of each component before and after each use.
Remove the SRAM battery from the derailleur and install the derailleur battery block when the bicycle is being transported or not in use for long periods of time. Failure to remove the battery could result in unintentional actuation and/or battery depletion. Failure to cover the battery terminals could result in damage to the battery.

Chain Replacement
Use a Pedro’s Chain Checker Plus, Pedro’s Chain Checker Plus II, or a Park Tool CC-4 tool to measure chain wear and replace the chain when it reaches 0.8% elongation.

Recycling

** For recycling and environmental compliance, please visit https://www.sram.com/en/company/about/environmental-policy-and- recycling.
Replace the derailleur battery with an authentic SRAM replacement battery only. Replace the SRAM AXS Controller battery with a CR2032 coin cell battery only.
Consult the SRAM Battery and Charger manual for battery maintenance and specifications.
⚠WARNING**
Never dispose of batteries in a fire.

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These are registered logos of SRAM, LLC:

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Specifications and colors subject to change without prior notice.
© 2021 SRAM, LLC
This publication includes trademarks and registered trademarks of the following companies:
Park Tool® is a registered trademark of Park Tool Co.
Pedro’s® is a registered trademark of Pedro’s Inc.
TORX® is a registered trademark of Acument Intellectual Properties, LLC

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References

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• Service | SRAM
• About | SRAM
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