Speedwerx is the only company offering cams for them that I've found so far. Talking to them , good for 2-3 hp alone. Not worth $900 IMO. But with that, bumping compression, bigger valves, and some other things you can get one to about 115hp on straight C116 racing fuel.
seen a 850 put down 92rwhp with these mods just to say no my bike ive just seen this done.
ported and polished heads
duel state line custom exhaust
bigger fuel pump (more line pressure)
stm full clutches (worth the money my 850 pulls like a can-am 1000 with them)
intake scope on top of box (lot more air)
custom 44mm throttle bodies (2mm bigger then the HO)
pcv with timing
I think I got all of it, you got to think that's big gain from stock 43-45 rwhp more then double the power. I only seen it on a dyno, never actually rode it.
A forum community dedicated to Polaris ATV owners and enthusiasts. Come join the discussion about Rangers, Sportsmans, Scramblers, Magnums, and others. Research modifications, troubleshooting, maintenance, and more!