The DmC 916s are a full twin system that use one silencer but still full twins. They say the DMC aliens are the same, with just 2 silencers, however I cannot comment on that as personal experience.
They have great all around power with a midrange that builds dramatically and pulls out nice on the top end. I run stock pilots with 280 mains with that setup. I also am a avid supporter of motofast 2-1 pipes but you will top out at 65 mph and they run hotter than with duals. However they have monster bottom end torque and sound friggin insane. I always run a 12 tooth front sprocket with stock rear gearing. You lose some top end but if you want a good trail quad those setups are bullet proof, reliable and really work well all around. Most people think banshee and they gotta make it run 85mph...I guess thats fine for dunes and dragging, but mine are trail setups.
Another note, where the shifter passes thru the plastic side cover, that bushing gets worn and causes repeat shift shaft seal failure and leaks. Check it real good , but if you keep blowing those seals replace that stator cover. Also, seal that crap out of that stator cover. Rtv both sides of the rubber gasket, and pull that stator wires and grommet out, RTV the grommet boss and lip seal and tape that harness all the way up to the plug at the air box. I have seen several occasions where just washing them lets water run into the harness and fill up the stator cover, and even seen one freeze in the winter and locked the flywheel solid in a block of ice..
And yes the pancake bearing mod.
Here is where my long useless list of stuff nobody cares about should go...
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