The Bomber CR Coil [paid link] Rear Shock from Marzocchi is engineered to provide exceptional performance and comfort for riders seeking a high-quality rear suspension for their mountain bikes. Known for its durability and adjustability, the Bomber CR Coil [paid link] is a reliable choice for riders who demand both precision and robustness, especially on rough terrain. This guide will cover the installation, adjustment, and maintenance of the Bomber CR Coil, along with troubleshooting tips, customization options, and its compatibility with other drivetrain components.

Installation of the Bomber CR Coil Rear Shock

Installing the Bomber CR Coil Rear Shock is a straightforward process, but it requires careful attention to ensure a proper fit and optimal performance. Here’s a step-by-step guide:

1. Remove the Old Shock:
   • Use a wrench to loosen the bolts securing the old shock to the frame.
   • Carefully detach the shock from both ends of the frame, taking note of any spacers or washers used.
2. Install the Bomber CR Coil:
   • Slide the new shock into the frame, ensuring the mount points align with the frame’s shock mounts.
   • Insert the bolts and tighten them securely to the recommended torque specifications, which are usually listed in the product manual.
3. Check for Proper Movement:
   • With the shock installed, check the rear suspension’s travel by gently compressing the shock. It should move freely without any resistance or binding.
4. Ensure Correct Orientation:
   • Verify that the damper is oriented correctly as per the manufacturer’s instructions. The coil side should face the bike’s frame, and the damper side should face outward for optimal performance.

Adjustment of the Bomber CR Coil Rear Shock

The Bomber CR Coil Rear Shock features several key adjustments that can be fine-tuned to match your riding style and the terrain. Proper adjustment will ensure a more comfortable and responsive ride. The shock features preload, rebound, and compression adjustments.

1. Preload Adjustment:
   • Preload determines the initial sag of the shock, which is crucial for achieving proper suspension feel. Use the coil’s preload knob or adjuster to increase or decrease the spring tension. A higher preload will make the shock stiffer, while a lower preload offers more comfort.
   • To set the correct preload, you should aim for approximately 25-30% of the shock’s total travel to be used as sag when you’re on the bike.
2. Rebound Adjustment:
   • The rebound adjuster controls the speed at which the shock extends after compression. Adjusting this ensures that the shock doesn’t extend too quickly (which can cause instability) or too slowly (which can lead to bottoming out).
   • To adjust rebound, turn the knob located on the shock’s damper side. Start with a middle setting and test it by riding on a variety of terrain. Adjust further for comfort and control.
3. Compression Adjustment:
   • Compression controls how the shock compresses under load. This is important for improving shock responsiveness and handling rough terrain.
   • Adjust the compression dial or knob to your preference. A softer compression setting will allow for better traction on rocky or uneven surfaces, while a firmer setting helps control larger impacts and maintain stability.

Maintenance of the Bomber CR Coil Rear Shock

Regular maintenance of the Bomber CR Coil Rear Shock is necessary to ensure long-term performance and reliability. The maintenance intervals depend on riding conditions, but it is recommended to inspect the shock every 6 to 12 months.

1. Cleaning:
   • After each ride, clean the shock with a damp cloth to remove dirt and debris. Be careful not to use abrasive materials that can damage the shock’s finish.
   • Avoid using high-pressure water, as this can force dirt into the seals.
2. Lubrication:
   • The Bomber CR Coil uses a coil spring, so proper lubrication of the shock’s moving parts is essential for smooth operation. Apply a light coating of suspension fluid to the shock’s shaft and seals to reduce friction and wear.
3. Check for Leaks:
   • Inspect the shock for any oil leaks, especially around the seals and damping unit. If you notice oil on the shock body, this may indicate a seal issue. In such cases, contact a professional for seal replacement or shock servicing.
4. Spring Tension Inspection:
   • Periodically check the coil spring tension and inspect for any damage or wear. If you find any deformities or wear marks, it may be time to replace the spring.

Troubleshooting Common Issues

While the Bomber CR Coil is a highly durable shock, like any component, it may experience issues. Here are some common problems and how to address them:

1. Shock Bottoming Out:
   • If the shock bottoms out frequently, it may be due to insufficient preload or compression settings. Increase the preload or adjust the compression settings to firm up the shock’s response.
2. Excessive Rebound:
   • If the shock is bouncing excessively after compression, the rebound setting may be too fast. Slow down the rebound by adjusting the knob to the desired speed for smoother control.
3. Loss of Suspension Travel:
   • Loss of suspension travel may occur if the shock is over-tightened or the spring is too stiff for the rider’s weight. Ensure proper preload settings and check for any damage to the shock.
4. Poor Performance on Rough Terrain:
   • If the shock isn’t handling rough terrain well, consider adjusting the compression or rebound settings. Make sure the shock is tailored to your riding conditions by experimenting with different settings until you find the right balance.

Customization and Optimization for Better Performance

To get the most out of your Bomber CR Coil, customization is key. Here are a few tips for optimization:

1. Spring Weight Selection:
   • The Bomber CR Coil offers different spring rates, allowing you to select the one that best matches your weight and riding style. Heavier riders may prefer a stiffer spring for better support, while lighter riders will benefit from a softer spring to allow more travel.
2. Use with Different Frame Types:
   • The Bomber CR Coil is designed to work with a wide variety of bike frames. To further optimize your setup, ensure your frame is compatible with the shock’s eye-to-eye length and stroke. Customizing the shock to fit your specific frame can improve overall handling and comfort.
3. Fine-Tuning for Terrain:
   • Depending on the terrain you ride on, fine-tuning the shock’s settings is crucial. For aggressive downhill riding, a firmer compression setting and a slower rebound will provide better control. On smoother trails, a softer setting might provide more comfort and responsiveness.

Compatibility with Other Drivetrain Components

The Bomber CR Coil Rear Shock is designed to work seamlessly with most modern mountain bike drivetrain systems. However, compatibility is primarily determined by the frame and shock size. The shock’s adjustment mechanisms, including preload, rebound, and compression, do not directly impact drivetrain components but should be set according to the terrain and riding style to maintain the bike’s overall balance and performance.

If you are upgrading to the Bomber CR Coil, ensure that your bike’s rear triangle has the appropriate mounting hardware for the shock. Compatibility with the frame’s shock mounts and eye-to-eye length is essential for a secure and effective installation.

In conclusion, the Bomber CR Coil Rear Shock is a standout option for riders looking for a robust, adjustable suspension that excels on rough trails. With proper installation, adjustment, and maintenance, this shock can provide years of reliable performance. Whether you are tackling technical downhill sections or smoother trails, the Bomber CR Coil offers versatility and customization to suit any rider’s needs.