Introduction
This manual provides essential instructions for the installation, operation, and maintenance of your SRAM Apex 1 11-Speed Long Cage Rear Derailleur. Designed for reliable performance and precise shifting in 1x drivetrain systems, this component features a lightweight aluminum cage, sealed cartridge bearings, and a roller bearing clutch for enhanced chain stability. Please read this manual thoroughly before installation and use to ensure proper function and longevity of your derailleur.
Safety Information
- Always wear appropriate safety gear when working on your bicycle.
- Ensure all bolts are tightened to the manufacturer's specified torque settings. Overtightening or undertightening can lead to component failure.
- If you are unsure about any installation or adjustment procedure, consult a qualified bicycle mechanic.
- Keep hands and clothing clear of moving parts during operation and adjustment.
Setup
1. Installation
- Mounting the Derailleur: Attach the derailleur to the derailleur hanger on your bicycle frame. Ensure it is seated correctly and tighten the mounting bolt to the specified torque.
- Cable Routing: Route the shift cable from your shifter to the derailleur. Secure the cable to the derailleur's cable anchor bolt, ensuring proper tension.
- Chain Installation: Install the bicycle chain, ensuring it is the correct length for your 1x drivetrain setup. The chain should pass through the derailleur's cage correctly.
2. Adjustment
Limit Screws (H and L)
The H (High) and L (Low) limit screws prevent the derailleur from shifting the chain off the smallest or largest cogs, respectively.
- H-Screw Adjustment: Shift the chain to the smallest cog. Adjust the H-screw so that the upper pulley is directly aligned with the smallest cog. The chain should run smoothly without rubbing.
- L-Screw Adjustment: Shift the chain to the largest cog. Adjust the L-screw so that the upper pulley is directly aligned with the largest cog. This prevents the chain from overshifting into the spokes.
B-Tension Adjustment
The B-tension screw adjusts the gap between the upper derailleur pulley and the cassette cogs.
- Shift the chain to the largest cog.
- Adjust the B-tension screw to achieve a gap of approximately 5-6mm between the upper pulley and the largest cog. This ensures smooth shifting across the entire cassette.

Figure 1: Front view of the SRAM Apex 1 Rear Derailleur, highlighting its compact design and pulley system.

Figure 2: Close-up view of the SRAM Apex 1 Rear Derailleur, showing the "Roller Bearing Clutch" and "Exact Actuation" technologies.
Operating the Derailleur
The SRAM Apex 1 derailleur is designed for 1x (single chainring) drivetrains, offering a wide range of gears with simplified operation.
- Shifting Up: Use the shifter lever to move the chain to smaller cogs for higher gears.
- Shifting Down: Use the shifter lever to move the chain to larger cogs for lower gears.
- Ensure you are pedaling forward with moderate pressure when shifting to allow the chain to engage smoothly. Avoid shifting under heavy load.
Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your derailleur.
- Cleaning: Periodically clean the derailleur, especially the pulleys and cage, to remove dirt and grime. Use a mild degreaser and a brush, then rinse with water and dry thoroughly.
- Lubrication: Apply a small amount of bicycle-specific lubricant to the pivot points of the derailleur and the pulley bearings after cleaning or as needed. Avoid over-lubrication.
- Inspection: Regularly inspect the derailleur for any signs of damage, wear, or loose bolts. Check the derailleur hanger for alignment. A bent hanger can cause poor shifting.
- Cable and Housing: Inspect the shift cable and housing for fraying, kinks, or corrosion. Replace them if necessary to maintain crisp shifting.

Figure 3: Rear view of the SRAM Apex 1 Rear Derailleur, showing the jockey wheels and cage. Regular cleaning of these parts is crucial.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Slow or inconsistent shifting |
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| Chain rubs on derailleur cage |
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| Chain falls off smallest/largest cog |
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| Noisy operation |
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Specifications
- Brand: SRAM
- Model Name: Apex 1
- Model Number: 00.7518.094.000
- Speed: 11-Speed
- Cage Length: Long Cage
- Material: Aluminum
- Item Weight: 0.35 Kilograms
- Mounting Type: Braze-On Mount (standard)
- Technology: Exact Actuation, Roller Bearing Clutch, X-Horizon
- Max Cog Capacity: Up to 32 teeth (standard, can be extended with specific hangers)
Warranty and Support
The SRAM Apex 1 Rear Derailleur comes with a limited warranty. For detailed warranty information, claims, or technical support, please refer to the official SRAM website or contact your authorized SRAM dealer. Keep your proof of purchase for warranty purposes.
For additional resources and product information, visit the SRAM Store on Amazon.





