Best big bore kit for 660?

[ZachAK]

Reading through old threads it sounds like there has been wild fluctuation in quality on big bore kits.

I have a dead 660 that I'd like to put a big bore kit in. Any suggestions on manufacturer? Is it a giant pain to install?

Thanks in advance.

 

[Deets066]

Easy to install, but they lack the quality and power imho.

 

[ZachAK]

Easy to install, but they lack the quality and power imho.

Thanks, Deets.

That's kinda what I was thinking. I'd also like to hear what people think between Stihl and OEM, and best OEM manufacturers.

Thanks!

 

[CapitaineHaddoc]

The Hyway kit isn't too bad I think.

 

[Mad Professor]

Find a good used 066 jug and see what the new price on a OEM piston is.

 

[Wood Doctor]

The Stihl MS660 already has power galore. Seems like the big bore cylinder kit is overkill and will just make it a fuel hog. Besides, you might be able to save the cylinder you already have.

 

[blsnelling]

Stick with the standard bore.

 

[ZachAK]

Stick with the standard bore.

Thanks for the replies. I think Brad has the word.

Guess I'll have to be ok with my amp only going up to 10...

 

[xxl]

I to thought big bore for my 660 build. I checked around no one was to keen on the big bore so i stuck with stock so glad i did. Mine run very well Also i used all O.E.M parts. I hear theres a few good after market pistons.