The Marzocchi Bomber 58 is a suspension fork built to provide high performance on aggressive mountain bike trails. This fork is a robust and durable option for riders seeking precise control, improved handling, and smooth suspension action. Whether you’re a seasoned rider or new to mountain biking, understanding the key features, installation, maintenance, and troubleshooting of the Bomber 58 will ensure you get the most out of its capabilities.
Installation of the Marzocchi Bomber 58 Suspension Fork
Installing the Marzocchi Bomber 58 is a straightforward process, but attention to detail is essential for optimal performance. Here are the steps to follow:
- Remove the Existing Fork
Begin by removing your current fork from the bike frame. Use a torque wrench [paid link] to remove the axle, headset, and the stem. Keep track of any spacers or components to ensure a proper reinstallation with the new fork. - Prepare the Bomber 58 Fork
Before mounting the new fork, ensure that the Bomber 58 is compatible with your bike’s head tube and axle type. The Bomber 58 uses a 15mm or 20mm thru-axle system, so make sure the fork is set up with the appropriate axle for your bike. - Install the Fork
Insert the steerer tube of the fork into the head tube of the frame. Secure the fork with the headset components and tighten the stem clamp bolts. It’s important to check for proper headset assembly and ensure there is no play in the headset. - Set the Axle
Install the thru-axle into the fork’s dropouts and tighten it according to the manufacturer’s specifications. Double-check that the axle is securely fastened to avoid any potential issues while riding. - Adjust the Travel and Setup
The Bomber 58 offers adjustable travel settings. Set the fork’s travel according to your preferred riding style and terrain. You can adjust the air pressure and compression settings to fine-tune the suspension to your liking.
Tools Required
- Torque wrench [paid link]
- 5mm and 6mm hex wrenches
- Headset press (if needed)
- 15mm or 20mm thru-axle
- Fork oil and grease
- Suspension pump (for air pressure adjustments)
- Spacers (if required for your frame)
Adjustment and Tuning of the Bomber 58
Fine-tuning your Marzocchi Bomber 58 will enhance its performance, allowing it to handle a wide variety of terrain with ease. Here’s how to adjust the fork for optimal performance:
Air Pressure Adjustment
The Bomber 58 uses an air spring system, and setting the correct air pressure is crucial to achieving the desired suspension feel. The ideal air pressure depends on your weight, riding style, and terrain. Start by setting the air pressure based on the recommended chart from Marzocchi, and then make incremental adjustments based on your ride feel. To adjust, use a suspension pump and ensure both sides of the fork are balanced.
Compression and Rebound Settings
The Bomber 58 is equipped with an adjustable compression system, which allows you to control the firmness of the suspension. The compression dial is located at the top of the fork and is usually marked with settings ranging from soft to firm. To adjust, turn the dial to your preferred setting. For riders on aggressive trails, a firmer compression setting will provide better control during descents.
The rebound adjustment controls the speed at which the fork returns to its normal position after compression. Turn the rebound knob to slow down or speed up the rebound. A slower rebound is ideal for rough, technical terrain, while a faster rebound is suited for smoother trails.
High and Low-Speed Compression
For riders seeking greater customization, the Bomber 58 provides separate high and low-speed compression adjustments. High-speed compression controls how the fork responds to large impacts, such as drops and landings, while low-speed compression affects the fork’s response to smaller bumps and obstacles. Fine-tuning both of these settings will help you adapt the suspension fork to different types of riding environments.
Maintenance of the Marzocchi Bomber 58 Suspension Fork
Proper maintenance ensures the longevity of the Bomber 58 suspension fork and optimal performance. Regular cleaning, lubrication, and servicing will keep the fork in top shape. Here’s how to maintain the Bomber 58:
Cleaning
After each ride, especially in muddy or dusty conditions, clean the fork’s stanchions and lowers with a soft cloth. This will prevent dirt and grime from entering the suspension system and damaging the seals. Avoid using harsh solvents; instead, use a gentle cleaner and water to remove any debris.
Lubrication
Check the fork’s oil level periodically, as well-lubricated internals reduce friction and ensure smooth travel. When servicing the fork, replace the oil to maintain its damping and spring characteristics. Follow the manufacturer’s guidelines on oil type and quantity for the Bomber 58.
Seal Maintenance
The fork’s seals play a critical role in keeping dirt and moisture out of the suspension system. Inspect the seals regularly for signs of wear or leakage. If you notice any issues, replace the seals immediately to avoid damaging the fork’s internals.
Regular Servicing
While the Bomber 58 is a low-maintenance fork, it’s essential to perform a full service at least once a year, depending on usage. This includes disassembling the fork, inspecting internal components, and replacing any worn-out parts, such as bushings or seals.
Troubleshooting Common Setup Issues
Even though the Marzocchi Bomber 58 is designed to offer a smooth ride, you might encounter a few setup issues during use. Here’s how to troubleshoot common problems:
Fork Feeling Too Soft or Too Firm
- Too Soft: If the fork feels too soft, you may have insufficient air pressure. Use a suspension pump to adjust the air pressure to the correct level based on your weight.
- Too Firm: If the fork is too firm, check for excessive air pressure or overly tight compression settings. Reduce the air pressure and adjust the compression dial to a softer setting.
Excessive Rebound Speed
If the fork’s rebound is too fast, it may cause the fork to “bounce” after absorbing a hit. Slow down the rebound by turning the rebound knob clockwise. This will slow down the fork’s return motion and prevent it from bouncing.
Noisy Fork
A noisy fork could indicate that the stanchions are not properly lubricated or that the seals are worn. Clean the stanchions and apply a light coat of fork oil. If the noise persists, check the seals for damage and replace them if necessary.
Customization and Optimization for Better Performance
The Bomber 58 is designed for custom tuning, allowing riders to fine-tune the fork to suit their needs. Here are some customization tips to enhance performance:
- Adjust Air Pressure: For optimal performance, adjust the air pressure based on your weight and riding style. A higher air pressure is better for aggressive riders who want a firmer ride, while lower pressure provides a smoother feel on rougher trails.
- Fine-Tune Compression Settings: Use the low and high-speed compression adjustments to customize the fork’s response to different trail conditions. Adjust for a firmer setting when descending fast or landing big drops, and a softer setting for technical climbs or rough trails.
- Upgrade the Oil: Consider upgrading to high-quality fork oils for improved damping and smoother performance. Choose oils that match your riding style and the terrain you’ll be riding on.
Comparison with Similar Models
When choosing between the Bomber 58 and other suspension forks, it’s crucial to understand the strengths and weaknesses of competing models. Some similar forks include the RockShox Lyrik and Fox 36. Here’s how the Bomber 58 compares:
- Weight: The Bomber 58 tends to be slightly heavier than the Fox 36 and RockShox Lyrik, but this weight provides added durability and stability.
- Performance: The Bomber 58 excels in handling rough, aggressive trails with its sturdy build and adjustable settings. It performs better in technical terrain compared to lighter forks that may not offer the same level of control.
- Customization: The Bomber 58 offers a high level of customization with both high and low-speed compression adjustments, making it more adaptable to different riding styles and conditions.
Compatibility with Other Drivetrain Components
The Marzocchi Bomber 58 is compatible with a wide range of mountain bike drivetrains, but it’s essential to ensure that your frame and other components are designed to work with this fork. Check the fork’s axle type, travel length, and steer tube dimensions before installation to confirm compatibility. The Bomber 58 is compatible with both 15mm and 20mm thru-axle systems and fits a wide variety of mountain bike frames.