Fox Suspension DHX RC4 Rear Shock

While the DHX RC4 is built with the durability required for downhill and freeride, it is versatile enough for aggressive all-mountain riding. The inclusion of a 2-position firm mode allows you to stiffen the shock for climbing or flatter trail sections, making it more capable than a dedicated downhill-only shock.

The Genuine Kashima Coat is more than just an aesthetic upgrade. It is a proprietary surface treatment that significantly reduces friction, allowing the shock to react more quickly to small bumps and providing a smoother, more consistent feel throughout the stroke.

This feature allows you to tune how much resistance the shock provides at the very end of its travel. By adjusting it, you can prevent harsh bottoming out on big hits or drops without having to change your entire spring setup.

No, the DHX RC4 is typically sold as the shock body only. You will need to purchase a coil spring separately that matches your specific weight and riding style to ensure the shock performs correctly.

While basic setup and adjustments can be done on the trail, the DHX RC4 features a sophisticated damping system that requires specialized tools and knowledge for internal service. We recommend having a certified suspension technician handle any internal maintenance to ensure the shock continues to function safely and effectively.

Boost Valve technology helps manage the shock's damping characteristics throughout the travel. It essentially provides a more efficient ride by keeping the shock stable during pedaling while still allowing it to open up instantly when you hit rough terrain.