125-200cc piston brand!

[gazmcfaza]

ok, I've had this discussion years ago with mito and rs 125 owners, everyone has mixed results. But pistons are expensive little items. I've used pro x and wossner in my husky and done over 5000 miles on each, plus another forged one that lasted a few miles before I leaned it out with a new exhaust but that was my fault. But mitaka, well they do kits with rings, gudgeon etc, for about half the price of the better known brands. They say it's not the manufacturing but the cutting out of the middle man that saves money. But I read they are cast, not forged and don't last nearly as long. Maybe they got better with time, I don't know, but is it worth the risk in case I wear out my top end again? Or does anyone use mitaka with no issues??

 

[PowerKord]

Vertex pistons are always my first choice. They are stock in Huskies!

 

[rancher1]

Vertex makes some nice pistons, forged and moly coated.

 

[rappster]

I put a wossner in my 510, been in for two years and the performance is 5X better than stock when the bike was new. easy to get and inexpensive

 

[Hurky]

Vertex makes some nice pistons, forged and moly coated.

I disagree:

Cast vs. Forged
What’s better and why:
Vertex Two-stroke Pistons
Because of a cast piston’s ability to contain higher silicon
content compared to forged pistons, and because two-
strokes have lower cylinder pressures when compared to
four-strokes, cast pistons are ideal for two-stroke engines.
Vertex pistons are gravity cast from an aluminum alloy with
18% silicon content. Silicon is important because:

• It decreases thermal expansion, which
changes the geometry after the piston reaches
operating temperature. With low thermal
expansion characteristics, Vertex pistons can
be run at tighter tolerances compared with
forged pistons. This creates better power
and performance, also making them less
susceptible to rattling or breaking.

• Silicon gives the pistons better wear
characteristics and prolongs piston life
by decreasing wear on the piston skirt.

Source: http://www.gb.vertexpistons.com/products.aspx (Product Feature Guide)

 

[Motosportz]

I've always found the rings wear out faster that the piston anyways.

 

[Hurky]

Do you notice that by loss of compression because the ring-end-gap get bigger ?

I like to change the piston mostly cause of skirt wear, the increased rattling apart of the noise will pronounce the bore to wear out I think...


Regards.

 

[juicypips]

Used mitaka in my kmx 125 had it in for three years an still in there when sold it, really good pistons price is not reflective of quality. Must of averaged 2-4k a year
And no theyre not expencive was 48 for complete kit.

 

[gazmcfaza]

thanks for the responses, I will get one as a backup then