Fox Racing K300 MX Knee Brace
Utilizing an injection molded glass-reinforced nylon frame construction the Fox Racing MX K300 offers the same superior support, comfort and function as the K700 at an affordable price.
Features
Have a functionality, fit, or otherwise product-specific question about the Fox Racing K300 MX Knee Brace? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Knee width measurement should be taken across the center of the knee. Take the measurements in a weight-bearing position at full extension of the knee (with leg completely straight).
| Size | Knee Width Measurement (in) |
|---|---|
| SM | 3.93 - 4.25 |
| MD | 4.25 - 4.48 |
| LG | 4.5 - 4.72 |
| XL | 4.72 - 5 |
| 2XL | 5 - 5.27 |
Sizing information is provided by the manufacturer and does not guarantee a perfect fit.
Click here to see the full Fox Racing Size Chart| Product Style | RevZilla SKU ID | Manufacturer Product # | Availability |
|---|---|---|---|
| Left / LG | 789106 | 08090-008-L | Available: Usually ships within 2-3 business days |
| Left / MD | 789108 | 08090-008-M | Available: Usually ships within 2-3 business days |
| Left / SM | 789109 | 08090-008-S | Available: Usually ships within 2-3 business days |
| Left / XL | 789110 | 08090-008-XL | Out of Stock |
| Right / LG | 789116 | 08091-008-L | Available: Usually ships within 2-3 business days |
| Right / MD | 789117 | 08091-008-M | Available: Usually ships within 2-3 business days |
| Right / SM | 789118 | 08091-008-S | Out of Stock |
| Right / XL | 789121 | 08091-008-XL | Out of Stock |
| Pair / LG | 789127 | 08092-008-L | In Stock: Ships within 24 hours |
| Pair / MD | 789128 | 08092-008-M | In Stock: Ships within 24 hours |
| Pair / SM | 789131 | 08092-008-S | Available: Usually ships within 2-3 business days |
| Pair / XL | 789132 | 08092-008-XL | Out of Stock |