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05 KX 250 PC2 vs PC Works Pipe Shootout

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OK so back to back with a PC shorty silencer.

PC2 is the off road version of the PC works pipe. The difference that I can measure between the 2 pipes is in the last cone section before the stinger. The PC2 is aprox. 5-7mm longer. I liked this pipe right off, better and stronger roll on power with a strong mid and a decent top that I was expecting to be much more flat than it was. The stock pipe revs well, this pipe is just off from that. For most riders I think this woud be a great pipe, more bottom, strong mid with a much better hook up than stock. It made the bike more Yam like, it was easier to ride.

PC works pipe felt like I went back to the stock pipe, softer bottom than the PC2, super crisp mid with a hard hit like the stock pipe. It reved a bit better than the PC2 and had about the same top over rev as the stock pipe, their close there. The PC works is not a top end only pipe, think of it as a very crisp version of the stock hard hitting pipe, some may like that, I dont. Both the PC works and stock pipe are weaker off the bottom than the PC2. Off the bottom id say the PC works and the stock pipe are close to a tie, they pull the same gears around the track. With the PC works and stock pipe at times you feel that gappy 3rd gear ( I run 13-49 gearing, stock is 13-51), the PC2 that gap in 3rd is all but gone, with the stock or PC works had me thinking 13-50?

So the bottom line you want a stock like hard hit and rip to the max that makes a 2 smoke fun but a bitch to ride sometimes? Go PC works it rips and is a powerful pipe.

Want your KX more Yam like, smoother, more bottom, strong mid(not as strong as PC works, but strong enough) better hook up with a decent rev? PC2 is your pipe.

Hope this helps anyone that is trying to decide between the 2.

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What jetting was used and was there any jetting changes required from one pipe to the next ?

Jetting was the same both pipes and I felt no need to make any adjustments.

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