Long wheelbase and low-hanging rear diff aside, the thing that strands most Outbacks on a muddy forestry road is a single spinning rear wheel. The Torq-Master R160 Rear Locker fixes that by replacing the open differential's spider gears with an automatic locker that ties both rear axles together under load, built from CNC machined 9310 steel with no spacers, dowel pins or air lines. Options cover every Outback generation from 2000 through 2026, split by engine, transmission and Wilderness trim because Subaru used different rear carriers across those years. Owners of 2018 and newer cars should know Torq-Masters does not guarantee newer traction control systems. Expect a rear diff teardown for the install, which suits a Canadian winter shop booking. Canada-wide shipping and duties included from Flat 4 Offroad in Calgary.