The ElevenSix Trunnion [paid link] Rear Shock from Push Industries is a high-performance, fully serviceable shock designed for aggressive mountain biking. Offering superior adjustability, performance, and durability, the ElevenSix Trunnion [paid link] is a favorite for riders looking to maximize comfort and control. In this guide, we will walk you through the essential maintenance steps to keep your shock performing at its peak [paid link]. Whether you’re installing it, performing routine maintenance, troubleshooting common issues, or looking to customize it, this guide will help you achieve optimal performance from your ElevenSix Trunnion rear shock.

Tools Required

• Shock pump
• 5mm Allen wrench [paid link]
• 6mm Allen wrench [paid link]
• Torque wrench [paid link]
• Sealant grease
• Soft cloth or towel
• Suspension fluid (specific to Push Industries)
• Adjustable spanner (for some models)
• Replacement seals (if needed)

Installation of the ElevenSix Trunnion Rear Shock

Installing the ElevenSix Trunnion Rear Shock requires careful attention to detail to ensure proper fitment and functionality. Below are the step-by-step instructions:

1. Remove the Existing Rear Shock: Start by removing the current shock from your bike frame using the appropriate tools. Be sure to keep any hardware, such as bolts and washers, in a safe place for reuse or replacement.
2. Check Compatibility: Before installation, verify that the ElevenSix Trunnion shock is compatible with your bike frame. The trunnion mount design is different from traditional eyelet mounts, so ensure your frame is designed for this type of shock.
3. Prepare the Mounting Hardware: If your shock comes with mounting hardware, make sure to install it correctly according to the shock’s specifications. If new hardware is required, consult the manufacturer’s guidelines to obtain the correct parts.
4. Install the Rear Shock: Position the shock in the frame, aligning the mounting points. Tighten the bolts using a torque wrench [paid link], following the manufacturer’s recommended torque specifications for the frame and shock mounting.
5. Adjust Air Pressure: Use a shock pump to set the appropriate air pressure for your weight and riding style. Check the manufacturer’s manual for the recommended pressure range.
6. Double Check Installation: After installing, check that the shock is properly aligned and that all bolts are securely tightened. Make sure the shock moves freely without binding or obstruction.

Adjusting the ElevenSix Trunnion Rear Shock

Adjusting your ElevenSix Trunnion rear shock ensures it performs optimally for your riding style and conditions. The shock offers multiple adjustment options, including compression, rebound, and air pressure.

Compression and Rebound Adjustment

• Compression Adjustment: The ElevenSix Trunnion shock features both high and low-speed compression adjustment. High-speed compression adjusts the shock’s response to quick impacts, while low-speed compression controls how the shock responds to slower, sustained forces like pedaling.
  • Turn the compression dial clockwise to increase compression (firmer ride).
  • Turn it counterclockwise to decrease compression (softer ride).
• Rebound Adjustment: Rebound controls how quickly the shock returns to its original position after compression. Adjust it according to your preference:
  • Turn the rebound knob clockwise to slow down the rebound (more control).
  • Turn it counterclockwise to increase rebound speed (faster recovery).

Air Pressure Adjustment

The air pressure in the shock plays a significant role in its performance. For a proper setup:

• Check Your Weight and Riding Style: Use the weight-specific recommendations provided by Push Industries to adjust the air pressure. Typically, the shock will be set at a base pressure for general use, but fine-tuning is necessary depending on your riding style and terrain.
• Adjust with a Shock Pump: Attach the shock pump to the valve, and make adjustments in small increments. Be sure to check the air pressure before every ride to maintain consistent performance.

Routine Maintenance and Servicing

The ElevenSix Trunnion rear shock is designed to last but still requires regular maintenance to ensure longevity and smooth operation.

Cleaning the Shock

• Wipe Down the Shock: After every ride, wipe down the shock with a soft cloth to remove dirt, mud, and debris. This prevents grime from getting into the seals and causing damage.
• Inspect for Leaks: Check the shock body for any signs of oil leakage or damage. If you notice oil on the shock, it may indicate that the seals need to be replaced.

Lubricating the Seals

• Seal Lubrication: Regular lubrication of the shock seals helps maintain smooth operation. Apply a small amount of suspension grease around the seals to prevent dirt buildup and ensure proper movement.
• Check for Seal Wear: Over time, seals can wear out, which may lead to air or oil leakage. Inspect seals regularly and replace them when necessary.

Suspension Fluid Replacement

• Fluid Change Frequency: Push Industries recommends changing the suspension fluid periodically to maintain optimal damping performance. This can be done every 50-100 hours of riding, depending on your riding conditions.
• Drain and Refill Fluid: To replace the fluid, remove the shock from the frame and disassemble the shock to access the fluid reservoir. Drain the old fluid completely and refill it with the recommended suspension fluid.

Troubleshooting Common Set-Up Issues

Despite its high-performance design, the ElevenSix Trunnion rear shock can experience common issues. Here are some troubleshooting tips for the most frequent problems.

No Rebound or Slow Rebound

• Possible Cause: This issue can often be traced to incorrect rebound adjustment or an issue with the internal components.
• Solution: Double-check the rebound setting. If it is set too slow, the shock may feel sluggish. Adjust the rebound setting and check the air pressure to make sure the shock is not under-pressurized.

Sag Issues

• Possible Cause: If the shock feels too soft or too stiff, it could be due to incorrect air pressure or the need for a damper service.
• Solution: Adjust the air pressure according to your weight and riding style. If the issue persists, it may be time to have the damper serviced.

Loss of Air Pressure

• Possible Cause: Loss of air pressure can happen due to damaged seals or a valve issue.
• Solution: Inspect the valve for damage or debris. If the problem is with the seals, replace them and reassemble the shock.

Customization and Optimization for Better Performance

Customizing the ElevenSix Trunnion rear shock can greatly enhance your riding experience. Here are a few ways to optimize its performance:

• Tune Compression Settings for Terrain: Adjust the compression settings based on the terrain you’re riding. For rough, technical trails, a softer compression setting will help absorb impacts. For smoother, faster trails, a firmer setting provides better efficiency.
• Rebound Settings for Rider Preference: Fine-tune the rebound settings to match your preference for control and comfort. A faster rebound is ideal for aggressive riders who need quick recovery after drops and bumps, while a slower rebound can be used for a more stable ride on smoother trails.
• Air Pressure Based on Ride Style: For those who ride aggressively or on technical terrain, slightly higher air pressure will give you more control. Conversely, softer pressure may be more beneficial for comfort during long rides or on smoother trails.

Comparing the ElevenSix Trunnion to Similar Models

When choosing a rear shock, it’s helpful to understand how the ElevenSix Trunnion compares to similar models. While the ElevenSix is known for its exceptional performance, customization options, and durability, some riders may prefer other models based on their specific needs.

• Fox DHX2: Known for its precision and performance, the Fox DHX2 is a competitor to the ElevenSix. It offers similar high-performance features but may lack the level of fine-tuning that the ElevenSix provides.
• RockShox Super Deluxe Coil: This shock is also favored by aggressive riders, with a reputation for smoothness and ease of use. However, the ElevenSix offers more advanced adjustability and is preferred for more serious tuning.

Compatibility with Other Drivetrain Components

The ElevenSix Trunnion rear shock is designed to work with most modern mountain bike frames and drivetrains. However, compatibility with other drivetrain components, such as the rear derailleur or chainring, should be checked during installation to ensure that there is no interference.

• Frame Compatibility: Ensure that your bike’s frame has a trunnion mount and can accommodate the shock’s specifications.
• Drivetrain Integration: The shock does not directly affect drivetrain compatibility, but it is essential to ensure your bike frame’s rear triangle and suspension components are in alignment to avoid clearance issues.

With regular maintenance, proper adjustments, and the right care, your ElevenSix Trunnion rear shock will deliver consistent, top-tier performance for many rides to come.