Before the bike pulled a little on the bottom and mid range, but fell on its face on the top end. Now the bike pulls harder everywhere, and even has a little power on the top end. The bike gets up to speed noticeably quicker and feels smooth. Install was pretty straightforward. I recommend verifying a .006" feeler gauge doesn't fit after adjusting your valves, mine were a little loose after the initial adjustment. The cam upgrade is well worth the time and money in my opinion.