Allison uprates B400 and B3400 xFE transmission to support Cummins X10 engine

On October 21, Allison Transmission announced an uprate to its B400 and B3400 xFE fully automatic transmissions, including retarder models. 
The uprated transmission models will now support ratings up to 350 hp and 1,150 ft- lbs of torque. This increase in ratings will enable fleets operating non-articulated buses to....

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