Some will say that the 520 is too much power for the woods.....I have never figured how you can have too much power...? Its all about throttle control, if you don't have that anything can get away from you.
I have the 520 dirt bike engine in my quad, which makes more hp than the KTM quad, but should be close. The power seems to keep on building, its very smooth. Its going to be nothing like your arm ripping 310 with the powerband hit, its going to be smooth. Its power without the arm ripping. My nephews bored ported fast Banshee seems so fast, and it is, with its arm ripping power. But my KTM beats it even though when you ride them individually the Banshee "feels" like it is.
1984 Honda 200M ATC
1985 Honda 200X ATC
1986 Honda 200X ATC
1999 Honda 406EX....11:1, Web Cam / Hardened rockers. Ported. WB CDI. CT Racing header. WB E-Series slip on. Lonestar swinger.
2001 Honda/KTM 520 Hybrid Quad. Its like a 400EX but twice the horsepower.
2014 Artic Cat Wildcat Trail XT