SRAM Eagle T-Type E-MTB Chainring 36T User Manual

1. Product Overview

The SRAM Eagle T-Type E-MTB Chainring is engineered for 12-speed Eagle drivetrain systems, specifically designed for e-bike applications requiring high durability and reliable chain retention. This 36-tooth steel chainring features SRAM's X-SYNC II narrow/wide tooth technology, ensuring optimal chain engagement and smooth power transfer.

It is compatible with 104 BCD (Bolt Circle Diameter) spider interfaces and utilizes a 4-bolt mounting system for secure attachment to compatible cranksets. The robust steel construction is built to withstand the demands of aggressive trail riding and high-torque e-MTB environments.

Image 1.1: Front view of the SRAM Eagle T-Type E-MTB 36T Chainring. This black steel chainring features 36 teeth with a narrow/wide profile, designed for 12-speed Eagle T-Type chains. It has a 4-bolt, 104 BCD mounting pattern visible through its cut-out design.

Key Features:

• Enhanced Durability: Steel construction designed for high-torque e-bike conditions.
• Optimized Drivetrain Performance: Features T-TYPE and X-SYNC II narrow/wide tooth technology for superior chain retention and smooth power transfer with 12-speed Eagle systems.
• Backward Compatibility: Works with existing Eagle components for versatile upgrade options.
• Aggressive Tooth Profile: Improves chain engagement and reduces chain drop on rugged terrain.
• Secure Mounting: 104 BCD mounting interface with four bolts for reliable attachment.

2. Installation (Setup)

Proper installation is crucial for the performance and longevity of your chainring. If you are unsure about any step, consult a professional bicycle mechanic.

Required Tools:

• Hex wrench set (typically 5mm or 6mm for chainring bolts)
• Torque wrench
• Grease (for bolt threads)

Installation Steps:

1. Prepare Crankset: Ensure your crankset has a 104 BCD spider interface compatible with a 4-bolt chainring. Clean the mounting surface thoroughly.
2. Position Chainring: Align the SRAM Eagle T-Type chainring with the bolt holes on your crankset's spider. Ensure the chainring is oriented correctly (some chainrings have an arrow or text indicating direction or outward facing side). The text "36T T-TYPE OR EAGLE CHAIN ONLY" should face outwards.
3. Install Bolts: Apply a small amount of grease to the threads of the four chainring bolts. Insert the bolts through the chainring and into the crankset spider.
4. Tighten Bolts: Hand-tighten all four bolts initially. Then, using a torque wrench, tighten the bolts in a crisscross pattern to the manufacturer's specified torque (typically 8-10 Nm, refer to your crankset manufacturer's specifications for exact values). Ensure even tension across all bolts.
5. Check Chain Compatibility: Verify that your chain is a 12-speed Eagle T-Type chain for optimal performance and compatibility with the chainring's X-SYNC II tooth profile.

Note: Incorrect torque can lead to premature wear, damage, or unsafe riding conditions. Always use a torque wrench.

3. Operation and Usage

The SRAM Eagle T-Type E-MTB Chainring is designed to be an integral part of your bicycle's drivetrain, facilitating power transfer from the pedals to the rear wheel. Its specialized design ensures efficient and reliable performance under various riding conditions.

Key Operational Aspects:

• Chain Retention: The X-SYNC II narrow/wide tooth profile is engineered to securely hold the chain, minimizing the risk of chain drops even on rough terrain or during aggressive riding.
• Smooth Shifting: While primarily a single chainring, its tooth profile contributes to smooth chain engagement with the cassette during rear derailleur shifts.
• Power Transfer: The rigid steel construction and precise tooth engagement ensure efficient transfer of power, which is particularly important for e-MTB applications with higher torque output.
• E-MTB Specific Design: Built to withstand the increased forces and wear associated with electric mountain bikes.

Ensure your chain is always clean and properly lubricated for optimal chainring performance and longevity.

4. Maintenance

Regular maintenance will extend the life of your chainring and ensure consistent performance.

Maintenance Schedule:

• After Every Ride (or frequently):
  • Clean the chainring and chain to remove dirt, mud, and grime. Use a degreaser if necessary, followed by a rinse and thorough drying.
  • Lubricate the chain with appropriate bicycle chain lubricant.
• Monthly (or every 100-200 miles):
  • Inspect chainring teeth for signs of wear (e.g., "shark fin" shape, bent teeth).
  • Check chainring bolts for tightness using a torque wrench. Re-torque to specifications if loose.
  • Inspect for any cracks or damage to the chainring body.
• Annually (or every 1000-2000 miles):
  • Consider replacing the chainring if significant wear is observed, especially if you are also replacing your chain and cassette. Worn chainrings can accelerate chain wear.

Note: The steel construction offers excellent resistance to corrosion and wear, but proper cleaning and lubrication are still essential for maximum lifespan.

5. Troubleshooting

This section addresses common issues you might encounter with your chainring.

Common Issues and Solutions:

• Chain Drop:
  • Cause: Worn chainring teeth, worn chain, incorrect chain length, misaligned chainline, or loose chainring bolts.
  • Solution: Inspect chainring and chain for wear; replace if necessary. Ensure chainring bolts are torqued correctly. Verify chain length and chainline.
• Noisy Drivetrain:
  • Cause: Dry or dirty chain, worn chainring/chain/cassette, misaligned components.
  • Solution: Clean and lubricate chain. Inspect all drivetrain components for wear and replace as needed. Check for proper installation and alignment.
• Poor Shifting (Rear Derailleur):
  • Cause: While the chainring primarily affects chain retention, a severely worn chainring can contribute to poor overall drivetrain performance. More often, this is related to the rear derailleur, cassette, or chain.
  • Solution: Ensure the chainring is not excessively worn. Focus troubleshooting on the rear derailleur adjustment, cable tension, and cassette condition.

For persistent issues, it is recommended to consult a qualified bicycle mechanic.

6. Specifications

7. Warranty Information

This SRAM Eagle T-Type E-MTB Chainring comes with a Limited Warranty.

For detailed information regarding the terms, conditions, and duration of the warranty, please refer to the official SRAM website or contact SRAM customer support directly. Proof of purchase may be required for warranty claims.

8. Support and Contact

If you have any questions, require technical assistance, or need further support regarding your SRAM Eagle T-Type E-MTB Chainring, please utilize the following resources:

• Official SRAM Website: Visit www.sram.com for product manuals, FAQs, and technical documents.
• SRAM Store on Amazon: For product information and other SRAM products, visit the SRAM Store.
• Authorized SRAM Dealer: Consult your local authorized SRAM dealer for professional service and advice.