Just got through putting the HMF system on my 650, took about 45 mins. everything went smooth,$189.00 bucks, could'nt pass it up since Supertrapp is dragging their feet. all stainless steel and I got the optional removable quiet-core insert. O.K. HOW DOES IT RUN? I have not put my Dyno-jet kit in yet, or had the carbs sync'ed, but it makes a difference even now, acceleration is quicker, and top speed is 3 mph more, when I get it all jetted and everything is right I'll let everyone know. SOUND? it sounds good, with the baffle out it is loud but not overly so just deep rumble until you crack it wide open throttle, then it get's loud, with the core install'ed it sound's alot like stock, but much deeper, and slightly louder than stock. I am happy with it. Lifetime warrenty against defects, and the packing is warrented for 10 yrs. yes I said 10, all for 250 buck's delivered to my door, can't wait to get my jet kit installed.

 

Hurry and do the dyno jet kit.

Did that kit include pipes all the way to the heads? Do you need to add or remove plates?

 

That sounds really great..who did you order the pipe from..I WANT ONE!!!!!

 

there web site is hmfengineering.com

 

Guy's they are working on a full system for 350 buck's but I think that is unnessesary because for 189.00 you get the silencer with all clamp's and mounting hardware, it comes designed to slip on the front headpipe, the long one but has a headpipe already welded to the muffler for the rear head, look at the website and click Prairie, they have a picture of what it looks like and all the info. motor has 42 hp. their dyno test was measured at the rear wheels keep in mind. stock they got 30 hp at the rear wheels, with the system they got 33, so 3 more hp at the REAR WHEELS is good for just a pipe,they said with jetting and a high flow filter, 5 more hp, at the rear wheels will be easily obtainable, that's about equal to 8-10 more at the motor. look the site over and check it out. my jeeting has never been spot on anyway so Guy's the jet kit is absolutely a must have in my opinion to get the most out of the pipe and to not hurt your motor beind to lean.