The Fox 34 Float Factory GRIP2 is a high-performance suspension fork designed specifically for aggressive trail and downcountry riders seeking superior damping control, weight optimization, and tunability. Positioned as a premium offering within Fox’s suspension lineup, this model integrates the advanced GRIP2 damper and the EVOL air spring system. This guide covers its installation, tuning procedures, performance tweaks, compatibility considerations, and how it compares to other forks in its class.
Tools Required
- 5mm and 6mm Allen wrenches [paid link]
- Torque wrench [paid link] with appropriate bits
- Crown race setting tool
- Star nut setter (if using a standard steerer tube)
- Suspension pump
- Shock oil and damper bleed kit [paid link] (for advanced service)
- Calipers (for axle-to-crown and rotor spacing checks)
- Bike stand [paid link] (optional but recommended)
Installation Process
Installing the Fox 34 Float Factory GRIP2 requires attention to detail, especially when setting up for the first ride. Begin by confirming the steerer tube length. If uncut, mark it to fit your frame’s head tube and spacers. Use a saw guide to ensure a straight cut, then install the star nut and crown race.
Mount the fork into the head tube with the headset components in the correct order. Apply torque to the stem bolts as specified by the manufacturer, usually around 5–6 Nm. Secure the axle through the fork’s dropouts and confirm the brake caliper mounts align with your rotor diameter. Torque all bolts to specification, ensuring the caliper doesn’t contact the rotor under compression.
Initial Setup and Adjustment
The GRIP2 damper offers high- and low-speed compression and rebound adjustments. Start with Fox’s recommended base settings, often printed on the fork leg or found via their tuning guide. Set sag by adjusting the air pressure in the EVOL chamber; target 20–25% sag for trail applications. Fine-tune rebound and compression damping by counting clicks from fully closed, using Fox’s tuning logic as a baseline.
Low-speed compression affects pedal bob and chassis movement during climbs. High-speed compression is more relevant during jumps and large impacts. Similarly, rebound settings should match rider weight and riding style to control how fast the fork returns after compression.
Maintenance and Servicing Schedule
To keep the 34 Float Factory GRIP2 performing at its peak, follow a structured maintenance routine. Every 30 hours of riding, perform a lower leg service—cleaning the foam rings and replacing bath oil. At 100 hours, a full damper bleed and air spring service are recommended. Use only Fox-approved suspension fluids and replacement seals to maintain internal tolerances and minimize stiction.
Visual inspections should be frequent. Look for oil residue on stanchions, unusual noise, or loss of travel. These symptoms may indicate the need for earlier servicing. Store the bike vertically or on a stand to prevent oil pooling and contamination.
Common Setup Issues and Troubleshooting
Incorrect air pressure is the most common mistake, leading to poor performance or bottom-out issues. Always verify air pressure with a calibrated shock pump and measure sag with the rider fully geared up. Another frequent error is misadjusted rebound, which can cause “packing down” on successive hits. If the fork feels harsh or unresponsive, reset all dials to factory settings and begin tuning from there.
Brake rotor alignment can also be problematic if the fork’s dropout spacing isn’t fully seated. Make sure the axle is torqued to spec, and check that brake rub isn’t caused by caliper misalignment.
Customization and Performance Optimization
Advanced riders often personalize the GRIP2 settings beyond factory recommendations. Installing volume spacers in the air spring can significantly alter the spring curve. More spacers will increase progression, ideal for aggressive riding or heavier riders.
Another avenue for performance is lubrication. Applying a small amount of suspension-specific grease on the wiper seals during service reduces friction and enhances small bump compliance. Riders can also experiment with high-speed compression to balance absorption and support during larger hits and landings.
Comparing 34 Float Factory GRIP2 With Other Forks
Compared to the Fox 34 Performance Elite (also with a GRIP2 or FIT4 damper), the Factory model distinguishes itself with Kashima-coated stanchions, reducing friction and enhancing longevity. Riders upgrading from a RockShox SID or Revelation will notice a stiffer chassis and more sophisticated damper tuning capabilities. The GRIP2 excels in terrain where high-speed control is critical, something mid-tier forks often fail to handle effectively.
In contrast to the Fox 36 Factory GRIP2, the 34 is lighter but slightly less stiff, making it more suitable for downcountry and trail bikes rather than enduro applications.
Drivetrain and Component Compatibility
The Fox 34 Float Factory GRIP2 uses a Boost axle spacing (110mm), compatible with most modern trail frames. It supports 29-inch wheels and has clearance for tires up to 2.6 inches. Brake compatibility is standardized with a 180mm post-mount, and adapters are available for larger rotors.
Its tapered steerer tube fits any modern integrated headset, while the axle system accommodates both quick-release and bolt-on through-axles depending on dropout specification. Riders should ensure the fork offset (commonly 44mm) complements the frame’s geometry and intended handling characteristics.
Is the Fox 34 Float Factory GRIP2 Worth It?
For riders seeking uncompromising performance in a trail-oriented suspension fork, the 34 Float Factory GRIP2 delivers standout damping control, exceptional tunability, and lightweight construction. Its premium features justify the price for enthusiasts who prioritize front-end traction and precise feedback. While overkill for casual riders or smoother trails, for those pushing limits on aggressive singletrack, it’s a top-tier upgrade worth considering.
Frequently Asked Questions
1. Can I use the 34 Float Factory GRIP2 on a cross-country bike?
Yes, but it’s best suited to downcountry and aggressive XC setups. Its stiffness and damping features may be excessive for pure XC racing.
2. How often should I service the GRIP2 damper?
Fox recommends a full damper service every 100 hours. Lower leg services should be performed every 30 hours.
3. Is it difficult to tune the GRIP2 damper for beginners?
It offers more adjustment than simpler dampers, which can be overwhelming. Start with factory settings and adjust incrementally based on ride feedback.
4. Can I run 27.5-inch wheels with this fork?
Not recommended unless specifically marked as compatible. The standard version is optimized for 29-inch wheels.
5. Does the Kashima coating make a real difference?
Yes. It reduces friction, enhances small bump sensitivity, and prolongs the fork’s internal lifespan.
6. What’s the maximum rotor size I can use?
With the proper adapter, you can run rotors up to 203mm, depending on your frame and fork’s clearance.