Complex sentence: The top speed recorded by one M107 driver was 50 mph at Grafenwöhr Training Area, Germany on a tank trail, also as tested by the Vilseck Maintenance Facility after the replacing a broken torsion bar.
Split into simpler sentences: The top speed recorded by one M107 driver was 50 mph at Grafenwöhr Training Area, Germany on a tank trail. This speed was also achieved in an M107 by the U.S. Army's Vilseck Maintenance Facility after replacing a broken torsion bar.