The updated RM-350B with all-wheel drive replaces the current RM-350B with optional rear-wheel power. The new model features all-wheel drive and a blower-type cooling fan as standard on all machines built after April 2002. The propel system provides independent front- and rear-wheel drive. The rear wheels are driven by a separate hydraulic pump to provide 100 percent more rear tractive effort than the current rear-wheel-assist option. The RM-350B is still capable of both full depth reclamation and soil stabilization. The unit also has many other improvements.