Upgrading Your Ride: Is Bomber 58 Worth It?

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When it comes to mountain bike suspension forks, few models stand out as prominently as the Marzocchi Bomber 58. Known for its durability, performance, and precision, the Bomber 58 has become a popular choice for riders seeking to elevate their riding experience. This article will delve into the installation, adjustment, maintenance, and troubleshooting of the Marzocchi Bomber 58, offering insights into how to get the best out of this model. We will also explore its compatibility with other drivetrain components, customization options, and how it compares to similar models.

Tools Required

Before diving into the steps for installation, adjustment, and maintenance, you’ll need the following tools:

  • 5mm, 6mm, and 8mm Allen wrenches [paid link]
  • Torque wrench [paid link] (preferably 3-15 Nm)
  • Suspension fluid (specific to Marzocchi specs)
  • Suspension fork oil seals
  • Dropper post tool (if applicable)
  • Cable cutter (for internal cable routing)
  • Grease
  • Fork fluid pump (for air spring adjustment)
  • Rags and cleaning solution

Installation of the Marzocchi Bomber 58

Installing the Marzocchi Bomber 58 is a straightforward process but requires attention to detail to ensure optimal performance and safety. Follow these steps for a smooth installation:

Step 1: Remove the Old Fork

  • Begin by removing your old fork from the bike frame.
  • Use the 5mm Allen wrench [paid link] to loosen the headset and remove the front wheel.
  • Unscrew the stem bolts using the appropriate size wrench and slide the fork out of the head tube.

Step 2: Prepare the New Fork

  • Inspect the Bomber 58 fork for any damage or signs of wear before installation.
  • Grease the steerer tube of the fork to prevent creaking and ensure smooth installation.
  • If your bike uses a tapered headset, check that the Bomber 58 has a compatible steerer tube or use the appropriate headset adapter.

Step 3: Install the Fork

  • Slide the Bomber 58 fork into the head tube of the bike frame.
  • Align the fork so that the brake caliper mounts are oriented correctly and the fork is centered.
  • Tighten the headset bolts to the manufacturer’s recommended torque specifications, ensuring the fork rotates smoothly.

Step 4: Attach the Stem and Brake

  • Reattach the stem to the steerer tube of the Bomber 58, ensuring it is centered.
  • Tighten the stem bolts gradually to the correct torque setting.
  • Install the front wheel and connect the brake caliper to the fork’s mounts. Check the rotor clearance and brake alignment.

Step 5: Adjust the Air Pressure

  • Use the suspension fork pump to adjust the air spring pressure based on your weight and riding style. The Bomber 58 has a specific pressure range recommended by Marzocchi, so ensure it falls within those guidelines for optimal performance.

Adjustment and Customization

Once the Bomber 58 is installed, the next step is adjusting it to match your riding preferences. The Bomber 58 offers several adjustable features that allow for a customized ride.

Adjusting Air Pressure

  • The Bomber 58 features an adjustable air spring, which allows you to control the fork’s firmness and responsiveness. To adjust the air pressure, use a suspension fork pump to increase or decrease the pressure within the recommended range.
  • For heavier riders or those who prefer a firmer ride, higher air pressure may be beneficial. Lighter riders or those seeking more comfort may opt for lower pressure.

Compression and Rebound Damping

  • The Bomber 58 also includes external compression and rebound damping controls. These allow you to fine-tune how the fork reacts to impacts and rebounds after compression.
  • To adjust compression, turn the compression knob clockwise for more resistance or counterclockwise for less. Adjusting the rebound damping controls how quickly the fork returns to its original position after compressing.

Adjusting the Travel

  • The Bomber 58 comes with adjustable travel, which can be reduced or extended depending on your needs. This is particularly useful for riders who prefer different handling characteristics for various types of terrain.
  • To change the travel, refer to Marzocchi’s guidelines for removing or installing spacers inside the fork’s internal assembly.

Maintenance and Care

Routine maintenance is essential to ensure that the Bomber 58 continues to perform at its best. Regular cleaning and servicing will extend the life of the fork and prevent common issues.

Cleaning and Lubing

  • After every ride, clean the fork using a soft rag and water. Avoid using harsh chemicals or abrasive materials that could damage the fork’s finish.
  • Periodically lubricate the fork’s stanchions and seals to keep them moving smoothly. Use a light grease that is compatible with suspension forks.

Changing Suspension Fluid

  • Marzocchi recommends changing the suspension fluid in the Bomber 58 every 50-100 hours of riding.
  • To change the fluid, remove the fork’s lower leg assembly and drain the old oil. Replace it with fresh oil, ensuring it’s the correct type and quantity as specified by Marzocchi.

Inspecting Seals

  • Inspect the fork seals regularly for signs of wear, dirt, or oil leakage. Worn seals can cause the fork to lose performance or begin leaking fluid.
  • Replacing the seals is an advanced task that requires disassembling the fork. If you’re unsure, it’s best to take it to a professional mechanic.

Troubleshooting Common Issues

Though the Bomber 58 is built for durability and reliability, certain issues can arise with extended use. Here are some common problems and how to address them:

Fork Feels Too Soft or Too Stiff

  • If the fork feels too soft, check the air pressure. Increase the pressure within the recommended range based on your weight.
  • If the fork is too stiff, try lowering the air pressure or adjusting the compression damping to reduce the resistance.

Oil Leaks or Sticking Stanchions

  • Oil leaks may be caused by damaged seals or improper oil levels. Inspect the seals and replace them if necessary.
  • Sticking stanchions can be caused by dried-out or dirty seals. Clean and lubricate the seals to restore smooth movement.

Noisy Fork

  • Noise can often be traced back to loose bolts or a lack of lubrication. Ensure all bolts are properly tightened, and lubricate the moving parts.

Compatibility with Other Drivetrain Components

The Marzocchi Bomber 58 is compatible with most modern mountain bike drivetrains, but compatibility can depend on the specific setup of your bike. Ensure that your frame has a tapered head tube if you plan to install the Bomber 58, as this is the most common standard. Additionally, check that the fork’s axle type (usually 15mm or 20mm through-axle) matches your front wheel hub.

If you are using a dropper post, make sure the fork clearance accommodates the additional components, as some custom setups may require adjustments.

Bomber 58 vs. Other Suspension Forks

When comparing the Bomber 58 to other suspension forks, a few key features set it apart. One of the biggest advantages of the Bomber 58 is its robust, stiffer chassis, which provides better handling and control on rough terrain. It’s designed for aggressive riders who need a fork that can handle large drops and technical descents.

While models like the Fox 36 and RockShox Lyrik offer similar performance, the Bomber 58 is often praised for its smooth damping and straightforward adjustability. Its price point also makes it an attractive option for riders who want high-end performance without breaking the bank.

Conclusion

The Marzocchi Bomber 58 is a high-performance suspension fork that is well-suited for aggressive riders seeking improved control and durability. Its ease of adjustment, customizable features, and compatibility with a wide range of bikes make it a solid upgrade for riders looking to enhance their riding experience. Whether you’re tackling technical descents or navigating rough trails, the Bomber 58 offers the reliability and performance needed to tackle any challenge.