Complex sentence: The Thundercat can still run with many of the fastest snowmobiles available currently, although it may have a great deal of speed, it WILL compete-and probably beat the Ski-Doo Mach Z 1000 or the Yamaha Apex/Attak 1000 4-stroke.
Split into simpler sentences: The Thundercat can still run with many of the fastest snowmobiles available currently. It has a great deal of speed, and it WILL compete-and probably beat the Ski-Doo Mach Z 1000 or the Yamaha Apex/Attak 1000 4-stroke.