I think we can yet again finally put the rumors of DFI 250SXs to bed... untill next year when the same bull**** rumours resurface
PS: just enough changes made so that its not BNG... its an interesting marketing technique... making lots of little bull**** changes that dont actually cost anything to put through the R&D process, but allows you to pop something on a brochure.
They update them with a few little bits each year, for instance the frame they changed last year and the rear suspension system the year before and the frame change again the year before that, this year the main change was the reed valve to save other people from having to spend money upgrading to the boyesen unit.
Damn why can't they develop them as fast as Yamaha or TM or even Husqvarna, KTM are just so stagnant in comparison.
Thats the first time I've hear the word upgrade and boysen in the same sentence! wow!
Your the only person that I've ever heard give Boyesen a bad name. The Vforce is just a cheap plastic reed cage in comparison to the Boyesen unit, loads of people around here fit them to their KTMs as an UPGRADE. The guy who had my old EXC before me had fitted one to that along with a Power wing and an FMF pipe and he's a millionairre so I don't think he would of done that because he wanted a cheaper reed cage on his new bike.
Numerous back to back dyno runs prove that the Vforce and Rad valve are equal through the bottom end and midrange, with the Rad-valve running out of steam in the top end as the vforce's continue making more power in the top end and overrev.
The main difference between the two set ups is:
The boysen has a single V comprising of four reed petals
The Vforce has a double V comprising of eight reed petals
4 large reed petals do not have the same reed rip surface area as 8 reed petals, end of story.
reed tip area is where the power is.
