what is a good exhaust for a grizzly 660

**6858-400ex** · 03-19-2005, 10:00 PM

what is a good slip on that gives the most power

**tom400ex** · 03-22-2005, 07:53 AM

HMF penland series Pipe

Thats what I got. It's loud as *****, but it rips

**Wahb** · 03-23-2005, 06:03 AM

HMF Utility Series is good too. I run it with the Quiet Core, its not obnoxiously loud, not a lot louder than stock really, but yielded some good gains with proper jetting.

**397ccEX** · 03-31-2005, 05:15 PM

uti;lity series hmf
just put one on my rancher it soundsl ike thunder and gainde torque too

**CHAR250R** · 04-01-2005, 10:37 AM

I have the Big Gun on my 03 Grizzly. I have a relative with a stock 03 Grizzly, and we did some drag racing to see if the pipe made a difference. My Grizzly was a little faster off the line, and his was better on top end. If I had to do it all over again, I would have left it stock. It didn't make that much of a difference.

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