PowerCore IV-Q
- Thread starter KID KDX
- Start date
Trailryder42
Member
- Feb 6, 2000
- 295
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I noticed one of my riding buds had one on his YZ426 during the last Colorado Spodefest. I couldn't believe how quiet it was. If you've ever heard a stock YZ426 you know they have quite a bark. He didn't seem to be having a problem with loss of power with it but I guess only he would know.
FMF Q on a '01 YZF
I’ve had one on my ’01 YZF 426 since just after I bought it in late June (kept the stock header). I rode the bike several times stock and I did notice that the Q silencer seemed to hurt low end slightly. But it still revs as well, maybe even better than stock.
My bike with the “Quiet” pipe is only a little louder than a buddy’s stock ’01 520 EXC. Like Trailryder observed it is pretty quiet for a 426 pipe. It is also as large as the KTM silencer, several inches longer than any other YZF can I’ve seen. I didn’t weigh it, but if it is heavier than stock it isn’t by much, I believe I read that it is supposed to be slightly lighter than the stock YZ part.
Overall I’d say it is worth it, relatively speaking, expect to pay over $300 w/out the header. This silencer is a “USFS approved” S/A.
I have heard of people having sealing problems with the YZ/WR stock header and any FMF collector, especially on 400s (diff header diameter??), but I have had no such problems with mine.
Hope this helps.
I’ve had one on my ’01 YZF 426 since just after I bought it in late June (kept the stock header). I rode the bike several times stock and I did notice that the Q silencer seemed to hurt low end slightly. But it still revs as well, maybe even better than stock.
My bike with the “Quiet” pipe is only a little louder than a buddy’s stock ’01 520 EXC. Like Trailryder observed it is pretty quiet for a 426 pipe. It is also as large as the KTM silencer, several inches longer than any other YZF can I’ve seen. I didn’t weigh it, but if it is heavier than stock it isn’t by much, I believe I read that it is supposed to be slightly lighter than the stock YZ part.
Overall I’d say it is worth it, relatively speaking, expect to pay over $300 w/out the header. This silencer is a “USFS approved” S/A.
I have heard of people having sealing problems with the YZ/WR stock header and any FMF collector, especially on 400s (diff header diameter??), but I have had no such problems with mine.
Hope this helps.
