Bow Wave (Water Crossings)

A bow wave is the wave of water pushed up in front of the front wheel when you ride through a river, ford or flooded section. At the right speed, the wave runs ahead of the bike and creates a slightly shallower trough behind it, which helps keep water away from the engine.

Ride too fast and the wave rises and splashes over the bike, possibly into the air intake. Water drawn into a running engine can cause hydrolock and serious damage. Ride too slowly and you may lose momentum on slippery rocks.

Before crossing, walk the route if possible to check depth, current and the bottom. Enter at a steady walking-to-jogging pace, in a low gear, standing and looking at the exit. If the engine stops in water, do not try to restart it: push the bike out and check the air filter and cylinder for water first.