I would go for it. The are probably one of the best pipe makers. Installed a dually system on a Raptor 700R and it is amazing.
04 YFZ450 - WR crank, CP 13:1 piston, Yosh TRS full Ti pipe, hotcams intake, cam mod, YZ clutch mod, fuel customs intake, 1" lowering peg nerfs, LSR axle, Pro Tapers, Hosier +1 stem, PRM desert grab bar, AC bumper, XCR's all around, GT thunder fronts. 175M NCVQ #5 48P
2010 YFZ450X - FCI, Tuner, slip on, 04 exhaust, pro armor nerfs, + misc.