1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your Ohlins NIX 22 Fork Cartridge Kit. Please read this manual thoroughly before installation and use to ensure proper function and safety. This kit is designed to enhance the performance of your motorcycle's front suspension.
2. Product Overview and Features
Figure 2.1: Ohlins NIX 22 Fork Cartridge Kit components. The image displays two complete cartridge units, each featuring a silver main body, a black top cap, and a visible internal spring. These units are designed to replace the internal components of standard motorcycle front forks.
The Ohlins NIX 22 Fork Cartridge Kit is an advanced suspension upgrade designed to provide superior handling and ride comfort. Key features include:
- 25mm Pistons: Equipped with high-performance 25mm pistons for precise damping control.
- NIX Cartridge Damping: Features separate damping functions with compression damping in the left fork leg and rebound damping in the right fork leg, allowing for independent adjustment.
- Aluminum Damping Tubes: Constructed with durable aluminum damping tubes.
- Improved Feel and Control: Engineered to deliver significantly improved road feel and enhanced control during various riding conditions.
- Alternative Spring Rates: Compatible with a range of alternative spring rates (springs sold separately) to customize the suspension for rider weight and riding style.
3. Compatibility
This Ohlins NIX 22 Fork Cartridge Kit (FKS 222) is compatible with the following vehicle applications:
- Harley Davidson FLFB Fat Boy 107 (Model Years: 2018-2019)
- Harley Davidson FLFBS Fat Boy 114 (Model Years: 2018-2020)
Please verify your motorcycle's make, model, and year before attempting installation.
4. Setup and Installation
Installation of the Ohlins NIX 22 Fork Cartridge Kit requires specialized tools and technical knowledge. It is highly recommended that installation be performed by a qualified motorcycle technician or an authorized Ohlins service center.
4.1. Pre-Installation Checks
- Ensure all components of the kit are present and undamaged.
- Confirm compatibility with your motorcycle model and year.
- Acquire the correct fork springs for your weight and riding style (sold separately).
- Gather all necessary tools, including a motorcycle lift, fork oil, and specialized fork tools.
4.2. General Installation Steps (Summary)
- Safely lift and secure the motorcycle.
- Remove the front wheel, brake calipers, and fender.
- Loosen the triple clamp bolts and carefully remove the fork legs from the motorcycle.
- Disassemble the original fork internals, draining all old fork oil.
- Clean the inside of the fork tubes thoroughly.
- Install the Ohlins NIX 22 cartridge kit components into the fork tubes, following the detailed instructions provided in the manufacturer's specific installation guide (not included in this general manual).
- Fill with the recommended Ohlins fork oil to the specified level.
- Install the appropriate fork springs and pre-load spacers.
- Reassemble the fork legs and reinstall them onto the motorcycle.
- Reattach the front wheel, brake calipers, and fender.
- Perform a final check of all fasteners and ensure proper function before riding.
Important: Refer to the detailed installation instructions provided by Ohlins with your specific kit for precise torque specifications and procedures. Incorrect installation can lead to serious injury or damage.
5. Operating and Adjustment
Once installed, the Ohlins NIX 22 Fork Cartridge Kit allows for fine-tuning of your motorcycle's front suspension. The kit features separate compression and rebound adjusters.
5.1. Damping Adjustment
- Compression Damping (Left Fork Leg): Adjusts the resistance to the fork compressing. Turning the adjuster clockwise typically increases compression damping (firmer), while turning counter-clockwise decreases it (softer).
- Rebound Damping (Right Fork Leg): Adjusts the resistance to the fork extending after compression. Turning the adjuster clockwise typically increases rebound damping (slower rebound), while turning counter-clockwise decreases it (faster rebound).
Adjustments are typically made with a small screwdriver or hex key, counting "clicks" from a fully closed (clockwise) position. Refer to Ohlins' specific tuning guide for recommended baseline settings for your motorcycle and riding style.
5.2. Spring Preload Adjustment
Spring preload adjusts the initial compression of the fork spring, affecting the ride height and sag. This is typically adjusted via a cap on the top of the fork leg. Consult the Ohlins manual for your specific spring and kit for proper preload settings.
Note: Always make small, incremental adjustments and test the motorcycle's handling in a safe environment. Keep a record of your settings.
6. Maintenance
Regular maintenance is crucial for the longevity and optimal performance of your Ohlins NIX 22 Fork Cartridge Kit.
- Fork Oil Replacement: Fork oil degrades over time and with use. Replace fork oil according to Ohlins' recommended service intervals, typically every 10,000-20,000 miles or annually, whichever comes first. Use only high-quality fork oil specified by Ohlins.
- Seal Inspection: Regularly inspect fork seals for leaks or cracks. Leaking seals can lead to loss of damping performance and potential damage to internal components. Replace seals as needed.
- Cleaning: Keep the fork tubes clean from dirt, dust, and debris. Wipe down the exposed fork tubes regularly to prevent contaminants from entering the seals.
- Component Inspection: Periodically check all suspension components for wear, damage, or loose fasteners.
- Professional Servicing: For comprehensive maintenance, including inspection of internal components and re-valving, it is recommended to have your Ohlins suspension serviced by an authorized Ohlins service center.
7. Troubleshooting
This section addresses common issues you might encounter with your fork cartridge kit. For complex problems, consult a qualified technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Excessive Fork Dive | Insufficient compression damping; too little spring preload; incorrect spring rate. | Increase compression damping; increase spring preload; consider stiffer springs. |
| Harsh Ride / Lack of Compliance | Too much compression damping; too much spring preload; incorrect spring rate. | Decrease compression damping; decrease spring preload; consider softer springs. |
| Fork "Packs Down" (doesn't extend fully) | Too much rebound damping. | Decrease rebound damping. |
| Fork "Topping Out" (extends too quickly) | Too little rebound damping. | Increase rebound damping. |
| Oil Leaks from Fork Seals | Damaged or worn fork seals; dirt under seals. | Clean seals with a seal cleaner tool; replace fork seals. |
8. Specifications
| Attribute | Value |
|---|---|
| Brand | Ohlins |
| Model | FKS222 |
| OEM Part Number | FKS222 |
| UPC | 748264675397 |
| Item Weight | 4 pounds |
| Product Dimensions | 31 x 6 x 4 inches |
| Material | Aluminum |
| Auto Part Position | Left, Right |
| Vehicle Service Type | Motorcycle |
| Exterior Finish | Painted |
| Date First Available | February 15, 2019 |
9. Warranty and Support
For detailed warranty information regarding your Ohlins NIX 22 Fork Cartridge Kit, please refer to the warranty documentation included with your purchase or visit the official Ohlins website. Warranty terms and conditions may vary.
For technical support, installation assistance, or service inquiries, it is recommended to contact an authorized Ohlins dealer or service center. They possess the specialized knowledge and tools required to properly service Ohlins suspension products.
You can typically find contact information for Ohlins support and authorized dealers on the official Ohlins website (www.ohlins.com).