DNM Suspension Shocks User Manual

Safety Information

⚠️ Important Safety Precautions:

• Always wear appropriate safety gear, including a helmet, protective clothing, and eye protection.
• Do not ride beyond your limits.
• Maintain your bicycle and suspension in good condition.
• Never modify your shock or bicycle frame, as this can lead to damage, serious injury, or premature failure.
• Never attempt to disassemble or service a shock that is compressed or has not returned to its original length.
• If your shock makes unusual noises or leaks oil, do not attempt disassembly. Return it to an authorized DNM dealer for service.
• Use only genuine DNM parts for shock maintenance and repair.
• ⚠️ Do not use the lock-out system during jump riding; this is considered very dangerous.

Installation Guide

Proper installation is crucial for optimal performance and safety.

Choosing the Right Shock

Determine your primary riding style (e.g., Downhill, Cross Country, Free Riding, Road) to select the appropriate shock. Upgrading a shock can significantly alter your bike's handling characteristics.

Measuring for Installation

1. Measure the eye-to-eye distance (center of mounting hole to center of mounting hole) using calipers or a metal ruler to determine the required shock length.

2. Measure the width of the aluminum sleeves at both ends of the shock that connect to the frame and swingarm. Use calipers to measure from the inside of the mount on both sides. The gap for the shock mount on your bike should match the width of the aluminum sleeve. Consult a bike shop if your bike has a different setup.

Clearance and Fitment

If you plan to extend your bike's travel, ensure there is sufficient clearance for the rear swingarm's full travel. If using a shock with an external reservoir (piggyback), verify it fits within the frame without interfering with the frame or seatpost.

Mounting the Shock

1. With the correct shock length and bushing clearances confirmed, proceed with installation. Remove the old shock absorber and clean the inside surfaces of the frame and swingarm.

2. Position the shock in the mounting area using appropriate tools, typically a 5mm Allen key and a 10mm open-ended spanner, depending on the fastener type.

3. Tighten fasteners with medium pressure, as aluminum spacers have a tolerance fit. Using Nylock nuts and Loctite threadlocker is recommended for secure fastening.

4. Gently sit on the bike and progressively apply pressure, cycling the suspension through its travel. If no strange noises are heard from the shock area, the installation is likely successful.

Fine-Tuning Adjustments

The final stage involves fine-tuning. Ride height can be adjusted using the collar on the main shock body to compress the spring. The rebound adjuster controls how quickly the shock returns (kicks back), and the compression damper fine-tunes the stroke. These adjustments allow personalization for different riding conditions.

After installation, put on your helmet and enjoy your ride.

Shock Information and Adjustments

Key Terms Explained

• Compressing Damping: The resistance felt when the shock is compressed.
• Rebound Damping: Controls the rate at which the shock returns.
• Preload: The amount of static force applied to the spring.
• Spring Rate: The force required to compress the spring.
• Shock Sag: The amount the shock compresses when the rider sits on the bike in a normal riding position. Recommended sag is approximately 15-25% of the shock's total travel for Cross-Country and around 25% for Downhill applications.
• Lock-Out: A feature that reduces suspension travel, making climbing easier and allowing for faster acceleration on flat sections or descents. Available in remote or manual operation.
• Remote Lock-Out: Allows operation of the lock-out system from the handlebars via a thumb shifter.

Adjustment Knobs

Rebound Adjustment (Red Knob):

• Turn clockwise (+) to increase damping (slow rebound).
• Turn counter-clockwise (-) to decrease damping (fast rebound).

Compression Adjustment (Blue Knob):

• Turn clockwise (+) to increase compression damping (pressure).
• Turn counter-clockwise (-) to decrease compression damping (pressure).

⚠️ Note: Never attempt to use both rebound and compression adjustments at their maximum settings simultaneously, as this can lead to improper operation and irreparable damage, which is not covered by warranty.

Specifications

Specifications for various DNM shock models:

DNM DV-22AR (Spring Type)

DNM BURNER-RCP 2S (Pneumatic Type)

DNM MM-22LAR (Spring Type)

DNM BURNER-RCP2 (Pneumatic Type)

Maintenance

Proper maintenance ensures the longevity and performance of your DNM shocks.

General Care

• Clean your shock using only soap and water. Avoid using high-pressure washers.
• After riding in muddy conditions, clean the main shaft, dust seal, and rubber bumper.

Service Intervals

After approximately 5000 kilometers (about 3100 miles) of riding, it is recommended to remove the bearing sleeves from both sides for inspection and maintenance. This may include cleaning, greasing, or replacement if necessary.

Disassembly and Service

⚠️ Do not attempt to disassemble the shock yourself. If the shock malfunctions or operates improperly, please contact your nearest authorized DNM service center.

Note: Models DV-22AR and MM-22LAR are hydraulic shocks charged with nitrogen. Do not attempt to disassemble these models yourself, as DNM will not be responsible for any damages or injuries resulting from unauthorized disassembly.

Warranty and Terms

DNM provides a one-year limited warranty from the date of purchase to the original purchaser. This warranty is non-transferable.

Warranty Coverage

• The warranty covers defects in materials and workmanship.
• If a product is found to be defective upon inspection by DNM, it will be replaced or repaired.

Warranty Exclusions

• Warranty does not apply to products that have been improperly installed or adjusted using methods not outlined in this manual.
• The warranty does not cover shocks that have been misused, or those with missing or altered serial numbers.
• Cosmetic damage, surface damage, or normal wear and deterioration from bicycle use are not covered.
• The warranty does not cover damage caused by jumps or dangerous actions, or if the lock-out system is used improperly.

Warranty Claims

For any defect covered by this warranty, the purchaser should contact the dealer or an authorized DNM service center. Proof of purchase must accompany all warranty claims.

If a replacement part is discontinued or unavailable, DNM reserves the right to substitute with an equivalent product. No refunds will be provided.

Declarations

DNM is not responsible for any damages to you or others arising from riding, transporting, or any other use of the shock or bicycle that deviates from the intended purpose. DNM's liability is limited to the repair or replacement of the shock as outlined in the service and warranty provisions of this manual.