BPW updates its AL2 system to a 12 tonne load capacity with thicker springs, welded spring seats and M24 U-bolts.
This extension of the AL2 program, AL2HD, is still recognised as having the same advantages as its AL2 predecessor. Clamped connections are still utilised so that damaged parts can be repaired individually, rather than having to replace a complete axle. BPW made improvements in trailing arm spring manufacturing processes whilst continuing further exhaustive testing on the required additional components to the AL2 program.
This has resulted in the development of the AL2-HD, a system designed for arduous duty cycles, and axle loads up to 12 tonne capacity.