Fox Commercial Series  980-31-026 – Fox shock – Kenworth
901-100-054 Fox shocks are heavy duty military grade drop-in replacements, made in the USA. They are backed with a 2 year/200,000 mile factory warranty. These shocks are also rebuild-able and serviceable.
Part Number: (old) 901-100-054 (new) 980-31-026
OEM Reference Numbers:  C71-1015, 671699, 671963
Monroe Reference Numbers:  65523
Gabriel Reference Numbers:  85937
Some of the benefits include:
Heavy duty military grade
Drop-in replacement
Made in the USA
Backed with a 2 year/200,000 mile factory warranty
Dyno tested at 35% more rebound and compression when compared to stock OEM shocks
Better roll stability for safety/ride comfort
Longer tire life
Less airbag failures
Rebuildable/serviceable