These work well deflecting garden variety roost and small branches on trail. However, a large branch broke the mount on my left guard. It did save the clutch lever and I could still ride, so giving it's life, it did it's job. Acceptable in Idaho.
The X-Force is the newest addition to Acerbis' off-road handguard line-up. The X-Force, tested by Monster Energy Kawasaki's Ryan Villopoto, is particularly versatile and provides maximum protection against stones, hits and inclement weather conditions. The X-Force features a universal mounting kit allowing the handguards to be mounted above or below levers. The included spoilers allow the handguards to be mounted with or without ventilation.