This oxygen sensor guard from Touratech will protect your important and expensive O2 sensor, as well as your exhaust manifold, from damage in a fall or by tree branches or large rocks.
One of the more important protection pieces for enduro riding is a solid engine guard. For the Husqvarna TE 250 (2010-on), Touratech now offers a very robust aluminum guard using tough, impact-resistant, 3mm thick aluminum alloy.