The Marzocchi Bomber Air [paid link] rear shock is a high-performance component designed for aggressive riding and technical terrain. To get the most out of your Bomber Air [paid link] shock, it’s essential to understand its installation, adjustment, and maintenance procedures, as well as how to troubleshoot common issues. This guide will walk you through everything you need to know to optimize your rear shock for performance and comfort. By following these steps, you can fine-tune your shock to match your riding style, enhance your bike’s overall handling, and ensure its longevity.
Tools Required
- Shock pump
- 5mm and 6mm Allen wrenches [paid link]
- Torque wrench [paid link]
- T25 Torx wrench [paid link]
- Pliers (optional)
- Cleaning supplies (rags, degreaser)
- Lubricant (recommended for shock mounting hardware)
- Bicycle stand or stable work surface
Installation of the Marzocchi Bomber Air Rear Shock
Proper installation of the Bomber Air rear shock ensures that the shock performs at its best and lasts longer. Follow these steps to install your shock correctly:
- Prepare the Frame: Ensure that your frame is clean and free of dirt. Use a degreaser to clean the shock mounting points if necessary. Apply a light coat of lubricant to the shock’s mounting hardware to ease installation.
- Remove the Existing Shock: If you’re replacing an old shock, use a 5mm or 6mm Allen wrench [paid link] to remove the bolts securing the shock to the frame. Keep these bolts for reinstallation.
- Install the New Shock: Position the Bomber Air shock in the frame’s mounting points. Insert the shock bolts and tighten them with the appropriate wrenches. Ensure that the shock is seated correctly and that the bolts are torqued to the manufacturer’s specifications to avoid damage.
- Check the Air Pressure: Using a shock pump, set the correct air pressure for your weight and riding style. Refer to the Bomber Air’s user manual for the recommended baseline air pressure.
- Recheck All Mounting Bolts: After installation, double-check all bolts for proper tightness using a torque wrench [paid link] to ensure everything is secure.
Adjustment of the Marzocchi Bomber Air Rear Shock
Adjusting your Bomber Air shock for optimal performance is crucial for handling different types of terrain. The Bomber Air features several key adjustment points that allow for a tailored ride experience.
Rebound Adjustment
The rebound adjustment controls how quickly the shock returns to its original position after compressing. A properly tuned rebound setting helps maintain better control over rough terrain and avoids pogoing (the bike repeatedly bouncing up and down).
- Locate the rebound knob at the bottom of the shock.
- Turn the knob clockwise for a slower rebound and counterclockwise for a faster rebound.
- Start with a middle setting and adjust based on your preferences. If you’re riding on technical trails, a slower rebound may help keep the rear end stable.
Compression Adjustment
The compression adjustment controls how the shock responds to bumps and impacts. The Bomber Air shock has both high and low-speed compression adjustments, allowing for fine-tuned control over the shock’s behavior.
- Low-Speed Compression: This adjustment is useful for controlling shock movement during slower, more controlled sections of the trail. Turn the low-speed compression knob clockwise to increase firmness and counterclockwise to decrease it.
- High-Speed Compression: This setting affects the shock’s reaction to fast impacts, like large drops or hits. Adjust the high-speed compression knob to fine-tune the shock’s resistance during aggressive riding.
Air Pressure Adjustment
The air pressure setting is one of the most critical adjustments for ensuring your shock matches your weight and riding style.
- Use a shock pump to adjust the air pressure. Start with the recommended baseline pressure (usually listed in the user manual or on the shock).
- If the shock feels too stiff or harsh, reduce the air pressure slightly. If it feels too soft and bottoming out, increase the pressure.
Volume Spacers
The Bomber Air rear shock allows you to install volume spacers to change the shock’s progressivity. Adding spacers increases the shock’s bottom-out resistance, making it more suitable for heavier riders or aggressive riding.
- Remove the air valve cap and reduce the air pressure to make it safe to install spacers.
- Insert the volume spacers into the shock’s air canister according to the instructions provided.
- Reinflate the shock to the desired pressure after installing the spacers.
Troubleshooting Common Set-Up Issues
While the Bomber Air is a reliable and robust shock, issues may arise during setup or use. Here are some common problems and solutions:
1. Shock Bottoming Out Too Often
- Cause: Too little air pressure or inadequate compression settings.
- Solution: Increase the air pressure and adjust both high and low-speed compression settings. Adding volume spacers can also help prevent bottoming out.
2. Shock Stiffness or Harshness
- Cause: Too high an air pressure or excessive compression settings.
- Solution: Reduce the air pressure and soften the compression settings, particularly for low-speed compression.
3. Unstable or Bouncy Rear End
- Cause: Incorrect rebound settings or too much low-speed compression.
- Solution: Adjust the rebound setting to ensure smooth shock return and fine-tune the low-speed compression for better traction.
4. Suspension Noise
- Cause: Insufficient lubrication of mounting hardware or shock pivots.
- Solution: Apply lubricant to the mounting hardware and ensure that all bolts are properly tightened.
Customization and Optimization for Better Performance
To optimize the Bomber Air for your specific needs, consider the following customization tips:
- Adjust Air Pressure Based on Riding Style: Riders who focus on downhill or aggressive riding should consider slightly higher air pressures to prevent bottoming out. For cross-country or endurance riding, a lower air pressure may be preferred for a smoother ride.
- Use Volume Spacers to Suit Riding Conditions: Riders who tackle aggressive trails or rough terrain should add volume spacers to prevent the shock from bottoming out. Conversely, lighter riders or those on smoother trails may not need spacers.
- Fine-Tune Compression Settings: Aggressive riders will benefit from a firmer compression setting to keep the shock responsive during big hits, while more casual riders may prefer a softer setting for a more plush feel.
Comparison with Similar Models
The Bomber Air rear shock stands out in its category for its performance, versatility, and ease of adjustment. Here’s a quick comparison with other popular rear shocks:
- Fox DPX2: Known for its refined damping and ease of tuning, the DPX2 is slightly more responsive on smoother trails but may require more frequent maintenance. The Bomber Air is more rugged [paid link] and requires less maintenance over time, making it ideal for rougher trails.
- RockShox Super Deluxe: Another competitor in the aggressive trail segment, the Super Deluxe offers excellent adjustability but is often regarded as slightly more complex to tune. The Bomber Air, while also adjustable, is simpler and more user-friendly for beginners.
Compatibility with Other Drivetrain Components
The Marzocchi Bomber Air rear shock is compatible with most modern mountain bike frames that feature standard shock mountings (e.g., 200mm x 57mm or 216mm x 63mm eye-to-eye). Before installing, always check your bike’s frame specifications to ensure compatibility. If you’re unsure, consult the Bomber Air’s manual or visit your local bike shop for professional advice. Additionally, ensure that your bike’s suspension linkage is designed to handle the Bomber Air’s performance to avoid any compatibility issues with your drivetrain components.
By following this guide, you can ensure that your Marzocchi Bomber Air rear shock is set up, adjusted, and maintained for optimal performance. Whether you’re tackling technical terrain or taking on steep descents, the Bomber Air will deliver the shock absorption and handling precision needed for a smooth ride.