Full vs Slip On

[Moto92]

When adding an exhaust such as HMF is there a noticable power difference between the full system and a slip on, being the cost is almost double.
Are there any dyno results that show these numbers?

[Punk'd]

Get full. Its worth the extra money. I took my lid off when I got my sparks and wow.. Feels like a totally diffrent bike.

[sampleez]

this isn't on a 450r....but my bike with a slip-on felt stronger than a bike with a full hmf. and with similar mods.

stock engine=slip on


modded engine or if you ever plan on modding engine=full system

[redlined94]

fearthis - I would just go ahead and spend the money on a full system. They do add just a little more than a slip on but not anything amazing plus if you ever want to cam your 450 it will be awesome with a full system instead of a slip on. I got a friend right now that is kickin himself cuz he got the HMF slip on instead of full system. And if you go slip on then decide you want a full you gotta have the pipe sent out to get it recut for the head pipe or you gotta just get a new system. Hope that helps!!
You oughta ride my 450 sometime with my Sparks its one BAD pipe. Loud and good power!!

[450robot]

i have a dr.d slipon, and my friend has an hmf full

we both have hot cams stage 1's,

and his has more of a "pull" down low, but our top speed is ussually equal