The Arma V3 [paid link] rear shock from EXT is designed to elevate your riding experience by providing superior suspension performance. Whether you are upgrading from a basic shock or simply looking to fine-tune your current setup, this guide will walk you through the installation, adjustment, maintenance, troubleshooting, and optimization of the Arma V3 [paid link] rear shock. You’ll also gain insights into its compatibility with other drivetrain components, allowing you to make an informed choice for your bike’s suspension system.
Tools Required
- 5mm and 6mm Allen wrenches [paid link]
- Torque wrench [paid link] (recommended: 5–25 Nm range)
- Suspension fluid (check specific fluid for Arma V3)
- Clean rags
- Shock pump
- Teflon grease
- Lubricant for shock mounts
Installation of the Arma V3 Rear Shock
Installing the Arma V3 rear shock is a straightforward process, but it requires attention to detail to ensure that it functions optimally. Below are the step-by-step instructions for proper installation.
- Prepare the Bike:
- Before you begin, place the bike on a stand to ensure stability while you work.
- Remove the old shock (if applicable) by loosening the mounting bolts using a 5mm Allen wrench [paid link]. Carefully slide the shock out of the mounting points.
- Check Compatibility:
- Verify that the Arma V3 is the correct size for your bike’s rear triangle. The shock’s eye-to-eye measurement and stroke length must match the frame’s specifications.
- Install the New Shock:
- Slide the Arma V3 shock into place, ensuring that the eyelets line up with the mounting points on the frame.
- Use the 6mm Allen wrench [paid link] to install the mounting bolts, ensuring that they are tightened to the manufacturer’s recommended torque settings (usually between 8-12 Nm for shock mounts).
- Shock Positioning:
- Make sure the shock is oriented correctly within the frame to allow for smooth suspension travel. Double-check that there are no obstructions around the shock that could interfere with movement.
- Secure the Shock:
- Tighten the mounting bolts evenly, making sure the shock is securely attached. Use a torque wrench [paid link] to ensure that you don’t overtighten or under-tighten the bolts, as both can cause damage or improper performance.
Adjustment of the Arma V3 Rear Shock
The Arma V3 rear shock offers a wide range of adjustments to customize your ride. From rebound to compression, these adjustments allow you to fine-tune the shock for different terrains and riding styles. Below is an overview of key adjustments:
Rebound Adjustment
The rebound adjustment controls the speed at which the shock returns after compressing. Proper rebound tuning is essential for maintaining control and comfort on rough trails.
- Locate the Rebound Knob:
- The rebound knob is typically located at the bottom of the shock body.
- Adjust the Rebound:
- Turn the knob clockwise to slow down the rebound, which is useful for rougher, faster trails.
- Turn the knob counterclockwise to speed up the rebound, which is preferable for smoother terrain.
- Test and Fine-tune:
- After making adjustments, test ride the bike and observe how the shock behaves. Make small adjustments as necessary, keeping in mind that too fast of a rebound can cause the bike to feel unstable, while too slow can lead to a sluggish ride.
Compression Adjustment
Compression determines how much the shock resists compression under load. Proper compression adjustment ensures the shock absorbs impacts without bottoming out.
- Locate the Compression Knob:
- The compression adjustment knob is usually located near the top of the shock body.
- Adjust the Compression:
- Turning the knob clockwise increases compression damping, making the shock stiffer and more resistant to bottoming out.
- Turning it counterclockwise decreases compression damping, making the shock more responsive and softer over bumps.
- Test and Adjust:
- As with rebound adjustment, test your setup and adjust based on the terrain. For aggressive riding or rough trails, a stiffer compression setting is often beneficial.
Maintenance of the Arma V3 Rear Shock
Regular maintenance ensures that your Arma V3 rear shock performs at its best over the long term. Here’s how to keep it in peak [paid link] condition:
Cleaning and Lubrication
- Clean the Shock After Each Ride:
- After each ride, wipe down the shock with a clean rag to remove dirt and debris.
- Be cautious not to get cleaning fluids or water into the shock’s seals or body.
- Lubricate the Mounts:
- Apply a light coat of Teflon grease to the shock mounts. This helps prevent wear and tear on the mounting surfaces.
Air Pressure and Fluid Checks
- Check Air Pressure:
- Use a shock pump to check and adjust the air pressure in your Arma V3. Regularly inspect for any loss of pressure, as this can affect suspension performance.
- Refer to the manufacturer’s guidelines for recommended air pressure based on your weight and riding style.
- Check for Leaks:
- Inspect the shock for any signs of fluid leakage or damage. If you notice a leak, it may be necessary to perform a more in-depth maintenance or seek professional servicing.
Suspension Fluid Changes
- Interval for Fluid Replacement:
- The suspension fluid in the Arma V3 should be replaced periodically. Refer to the manufacturer’s service interval recommendations, usually every 100-200 hours of riding, depending on use.
- Fluid Change Procedure:
- To change the fluid, remove the shock from the frame, disassemble it carefully, and drain the old fluid.
- Refill with the specified type of suspension fluid, ensuring the correct volume and viscosity. Always use the recommended fluid type to maintain optimal performance.
Troubleshooting Common Setup Issues
Issue 1: Lack of Rebound Control
- Symptoms: The rear end feels too bouncy or unstable after compressing.
- Solution: Check the rebound settings. If the shock returns too quickly, tighten the rebound knob to slow it down. If it returns too slowly, loosen the knob to speed it up.
Issue 2: Bottoming Out During Hard Landings
- Symptoms: The shock compresses fully during big impacts or drops.
- Solution: Increase compression damping by turning the knob clockwise to make the shock stiffer. You may also need to add more air pressure to increase the shock’s resistance to compression.
Issue 3: Excessive Sag or Softness
- Symptoms: The bike feels too soft, or there is excessive sag when you sit on it.
- Solution: Adjust the air pressure to the recommended level for your weight. You can also increase the compression setting to add more resistance for a firmer feel.
Customization and Optimization
Fine-Tuning for Performance
The Arma V3 rear shock allows you to customize the settings to match your riding style. For trail riders, a more responsive shock with softer compression and faster rebound may be desirable. For downhill riders, you may prefer a firmer shock with more compression and slower rebound to handle rougher terrain and larger impacts.
Optimizing for Weight
The Arma V3 offers tunable air pressure that can be adjusted based on the rider’s weight. A proper air pressure setting is crucial for achieving the ideal balance between comfort and performance. Adjusting the air pressure based on terrain and rider weight will maximize the shock’s potential.
Compatibility with Other Drivetrain Components
When upgrading to the Arma V3 rear shock, it’s important to consider how it integrates with the rest of your bike’s drivetrain and frame. The shock is compatible with most modern mountain bike frames that use standard shock mounting standards, but it’s always best to confirm compatibility with the frame manufacturer before purchase. Additionally, the shock’s performance is best when paired with high-quality, well-maintained drivetrain components.
By ensuring that the rest of your bike’s components are in top condition, you can make the most out of your Arma V3 rear shock’s performance, providing a smooth, responsive ride on all types of terrain.