DIY Rear Shock Sag Setup for Float DPS Performance Elite

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Setting up the sag on your Fox Float DPS Performance Elite [paid link] rear shock is one of the most crucial steps to optimizing your bike’s performance. Proper sag setup ensures that your suspension works effectively, providing maximum comfort, control, and efficiency on the trail. This guide will walk you through the process of setting up the rear shock sag, troubleshooting common issues, and ensuring your suspension is in optimal condition.

Tools Required

  • Shock pump with a pressure gauge
  • Measuring tape or ruler
  • A small scale (optional, for rider weight measurement)
  • A friend or helper to assist with measuring sag
  • A flat surface to ensure proper measurement

Understanding the Float DPS Performance Elite Rear Shock

The Fox Float DPS Performance Elite [paid link] is a high-performance rear shock designed for both cross-country and trail riders. Known for its versatility and durability, the shock offers three-position adjustments (Open, Medium, and Firm) that help tailor the suspension for different trail conditions.

Sag refers to the amount the shock compresses when the rider is on the bike, which is usually a percentage of the shock’s total travel. For most riders, a 25-30% sag is ideal for the Float DPS Performance [paid link] Elite, depending on riding style, terrain, and personal preference. Setting the correct sag ensures the shock reacts quickly to terrain changes and offers consistent performance throughout your ride.

Step-by-Step Guide to Setting Up Rear Shock Sag

1. Measure Rider Weight

  • Before adjusting the shock, determine your body weight, as this directly influences the air pressure required in the rear shock. You can use a scale to measure your weight with all riding gear (including helmet, shoes, etc.).
  • This will serve as a baseline to set the shock’s air pressure.

2. Preload and Adjust Air Pressure

  • Using a shock pump, increase the air pressure in the Float DPS Performance [paid link] Elite rear shock.
  • Start with the manufacturer’s recommended air pressure based on your weight. The suggested pressure is usually printed on the shock or available in the user manual.
  • The air pressure will determine the spring rate, and proper pressure is essential to achieve the correct sag percentage.

3. Set the Bike Up on a Level Surface

  • Position the bike on a flat, stable surface. Ideally, use a bike stand [paid link] to keep the bike upright.
  • You need to ensure that the bike is level when setting the sag, so it’s crucial to check that it’s not leaning to one side.

4. Measure the Initial Sag

  • Have a friend or helper hold the bike while you sit in the riding position, with both feet on the pedals.
  • Put your full weight on the bike, ensuring you are in your normal riding stance.
  • Measure the distance between the shock’s eyelet and the O-ring (the small rubber piece that sits on the shaft of the shock) when you’re in the riding position.
  • Push the O-ring down to the shock’s body before mounting the bike and then check its position after you’ve gotten on.

5. Check the Sag Percentage

  • To calculate sag, measure the distance the shock shaft has compressed (from the O-ring’s starting position to where it ended up after you mounted the bike).
  • Divide the total travel of the shock (measured in millimeters) by the compression distance and multiply by 100 to get the sag percentage.
  • For example, if your shock has 50mm of travel and the shaft has compressed 12mm, your sag is (12/50) x 100 = 24%.

6. Adjust Air Pressure

  • If the sag is too high (i.e., too much compression), add air to the shock. If the sag is too low (too little compression), reduce the air pressure slightly.
  • Repeat the measurement process after each adjustment to verify the sag is in the desired range (25-30%).

7. Fine-Tune for Personal Preferences

  • Once you reach the desired sag, you can fine-tune the shock to your preference. For instance, adjusting the compression settings (medium, open, or firm) will modify how the shock reacts to different types of terrain.
  • Set the shock to Open for technical descents or rough trails and Firm for climbing or flatter, smoother sections.

Troubleshooting Common Sag Setup Issues

Sag Too High

  • Problem: The shock compresses too much, making the bike feel too soft and sluggish.
  • Solution: Increase the air pressure gradually until the sag reaches the correct percentage (25-30%). Recheck after each adjustment.

Sag Too Low

  • Problem: The shock does not compress enough, resulting in a harsh ride and poor handling.
  • Solution: Decrease the air pressure slightly. If the sag remains stubbornly low even after reducing pressure, it may indicate a defective shock or a need for a different air spring rate.

Incorrect Measurement

  • Problem: If the O-ring doesn’t sit properly or you fail to measure the correct compression distance, your sag readings will be inaccurate.
  • Solution: Double-check your measuring process, and make sure the O-ring is fully reset to its original position before getting on the bike.

Customization and Optimization for Better Performance

Once you have the correct sag, you can customize the Float DPS Performance Elite rear shock for your specific riding style and conditions. Here are a few tips:

Fine-Tune Compression and Rebound Settings

  • Compression: Adjust the compression dial to control how quickly the shock compresses under load. For technical descents, you might want to increase compression to prevent bottoming out. For smoother rides or climbing, decrease compression for better sensitivity.
  • Rebound: Adjust the rebound setting to control how quickly the shock returns to its original position after compression. A slower rebound may be better for rough terrain, while a faster rebound may work better for smoother trails.

Experiment with Volume Spacers

  • Fox Float DPS Performance Elite shocks often allow for the addition of volume spacers. These spacers limit the amount of air volume in the shock, which increases the spring rate toward the end of the shock’s travel. This can help prevent bottoming out on rough sections.

Adjust the Three-Position Lever

  • The three-position lever on the Float DPS Performance Elite (Open, Medium, Firm) offers versatile [paid link] control over suspension stiffness. Use the Open mode for technical terrain, Medium for varied terrain, and Firm for smoother, less technical trails.

Comparing the Float DPS Performance Elite with Other Rear Shocks

When considering the Fox Float DPS Performance Elite, it’s important to understand how it compares to other models like the Fox Float X2 or the RockShox Deluxe.

  • Fox Float DPS Performance Elite vs. Fox Float X2: The Float X2 is a more aggressive shock, offering more adjustability and control, making it ideal for enduro or downhill riders. However, the DPS Performance Elite is lighter, easier to adjust, and better suited for cross-country and trail riders.
  • Fox Float DPS Performance Elite vs. RockShox Deluxe: Both shocks offer comparable performance, but the Fox Float DPS Performance Elite tends to be more sensitive, providing better small-bump compliance. RockShox Deluxe is more cost-effective and may appeal to riders who want a more straightforward, no-frills option.

Compatibility with Other Drivetrain Components

The Fox Float DPS Performance Elite is compatible with most modern mountain bike setups, but it’s important to ensure that your bike’s frame and other components are compatible with the shock. Double-check the shock’s eyelet size, mounting hardware, and travel specifications to confirm compatibility with your bike’s geometry. Additionally, ensure that the shock’s tuning options align with your suspension system’s requirements for best performance.

By following these guidelines and regularly maintaining your Fox Float DPS Performance Elite rear shock, you can significantly improve your riding experience, allowing for better control, comfort, and performance on all types of terrain.