How to Install, Adjust, and Maintain the Apex Rear Derailleur

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in Apex, Rear Derailleur, SRAM

The SRAM Apex rear derailleur [paid link] is a reliable and cost-effective component designed for smooth shifting across a wide range of cassettes. Whether you’re installing a new derailleur, fine-tuning adjustments, or ensuring long-term maintenance, this guide provides a step-by-step process to achieve flawless shifting performance.

By following this guide, you’ll learn:

  • How to properly install the Apex rear derailleur [paid link].
  • The best way to adjust limit screws and cable tension.
  • Essential maintenance routines to extend its lifespan.

Whether you’re a beginner or an experienced mechanic, this guide ensures that your SRAM Apex derailleur functions at its best.

Tools Required

  • 5mm hex key [paid link]
  • Phillips screwdriver
  • Torque wrench [paid link]
  • Cable cutters
  • Chain tool
  • Degreaser and lubricant
  • Clean rag

Step-by-Step Installation Guide for the Apex Rear Derailleur

1. Preparing the Bike for Installation

Before mounting the Apex rear derailleur [paid link], ensure your bike is clean and your drivetrain is free from dirt and debris. Check that the derailleur hanger is aligned properly to prevent shifting issues.

2. Mounting the Derailleur

  1. Locate the mounting bolt on the rear derailleur.
  2. Insert it into the derailleur hanger on the frame.
  3. Use a 5mm hex key [paid link] to tighten the bolt to the manufacturer-recommended torque (typically 8-10Nm).
  4. Ensure the derailleur moves freely without excessive play.

3. Installing the Chain

  1. If you’re replacing the chain, measure and cut it to the correct length.
  2. Thread the chain through the upper and lower jockey wheels of the Apex derailleur.
  3. Use a quick link or chain pin to secure the chain properly.

4. Connecting the Shift Cable

  1. Shift the shifter to the smallest cog position.
  2. Route the cable through the cable guide and barrel adjuster.
  3. Pull the cable taut and secure it using a 5mm hex key [paid link].
  4. Trim the excess cable and install a cable end cap to prevent fraying.

Adjusting the Apex Rear Derailleur for Precise Shifting

1. Setting the Limit Screws

The limit screws prevent the derailleur from shifting beyond the smallest or largest cog, avoiding chain drops and misalignment.

  • H-Limit Screw (High Gear Adjustment)
    • Shift to the smallest cog.
    • Adjust the H-screw until the jockey wheel aligns perfectly under the cog.
  • L-Limit Screw (Low Gear Adjustment)
    • Shift to the largest cog.
    • Turn the L-screw to align the jockey wheel under the largest cog.

2. Fine-Tuning Cable Tension

  1. Shift through the gears to test shifting performance.
  2. If shifting feels slow to the larger cogs, increase cable tension by turning the barrel adjuster counterclockwise.
  3. If shifting is hesitant to the smaller cogs, reduce cable tension by turning the barrel adjuster clockwise.
  4. Repeat until shifting feels smooth and precise.

Essential Maintenance for Long-Lasting Performance

1. Cleaning and Lubrication

  • Wipe down the derailleur with a clean rag after every ride.
  • Use a degreaser to remove grime from the jockey wheels.
  • Apply a light lubricant to moving parts to keep shifting smooth.

2. Checking for Wear

  • Inspect jockey wheels for excessive wear or damage.
  • Check the cable and housing for fraying or corrosion.
  • Ensure the derailleur hanger is straight to avoid poor shifting performance.

3. Replacing Worn-Out Parts

  • If shifting becomes inconsistent, replace the shift cable.
  • Worn jockey wheels should be replaced periodically to maintain crisp shifting.

Troubleshooting Common Apex Rear Derailleur Issues

1. Chain Skipping or Poor Shifting

  • Ensure the derailleur hanger is straight.
  • Check for stretched cables and replace them if necessary.
  • Verify limit screws and adjust them if needed.

For a detailed guide on fixing shifting issues, visit:
Why Your SRAM Apex Rear Derailleur Might Not Be Set Up Correctly and How to Fix It

2. Noisy Shifting

  • Lubricate the chain and jockey wheels.
  • Adjust cable tension using the barrel adjuster.
  • Check for bent derailleur hangers.

Apex Rear Derailleur vs. Rival: Key Differences

When comparing the Apex vs. Rival rear derailleur [paid link], Apex is more budget-friendly, while Rival offers lighter materials and a more refined shifting feel. Both use SRAM’s Exact Actuation™ technology, ensuring consistent shifting across the entire cassette.

Conclusion

Proper installation, adjustment, and maintenance of your SRAM Apex rear derailleur ensure smooth and reliable shifting. By following this guide, you can maximize its performance and lifespan. Regular maintenance and fine-tuning adjustments will keep your drivetrain running efficiently for years.

FAQs

1. How often should I clean my Apex rear derailleur?

Clean your derailleur every 2-3 rides and perform a deep clean once a month to prevent grime buildup.

2. Can I use the Apex derailleur with an 11-speed cassette?

No, the SRAM Apex derailleur is designed for 10-speed cassettes and is not compatible with 11-speed systems.

3. Why is my Apex derailleur making noise?

Check for dry jockey wheels, loose cable tension, or a bent derailleur hanger. Lubrication and minor adjustments should fix the issue.

4. Can I upgrade my Apex derailleur to a Rival model?

Yes, the SRAM Rival derailleur is a direct upgrade, offering lighter materials and smoother shifting while maintaining compatibility with Apex shifters.

5. What is the maximum cassette size for the Apex derailleur?

The medium-cage version supports up to a 32T cassette, while the long-cage version handles up to 36T.