Ironman Polyurethane Bushings feature a unique high density
injection moulded polyurethane material, providing precise location and a
durable bearing surface for your leaf springs, making them very durable
in hot temperatures whilst providing soft comfortable vehicle ride. Not compatible with 2WD Toyota Tacoma models

All Ironman spring bushes also feature the special spiral and
flange grooves – incorporated grooves and spiral bore rifle – to
distribute lubricating grease evenly throughout the bushing surface when
combined with greasable shackles and pins.