taco eater :
Maci Dub from Dubvue, WA United States
Good piston, just like the original, but the ring kind of sucks. Black steel, sharp edges, and 3.8mm gap in my 45mm airsal bore that still shows cross-hatching. Very brittle, broke on install without overextending. Original ring was better quality, chamfered and chromed, but I got the piston kit years ago as well, so quality may be different now.
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1 taco eaters like this review
Use the correct wrist pin.
March 23, 2014
taco eater :
Anonymous Person
Bought the kit, worked great until I decided to make sure the ring was on right. Without thinking, I put the wrist pin from the 50CC cylinder in, instead. Wore down and broke off the wrist pin holes inside the cylinder (narf).
Great kit, great cylinder. Not immune to user catastrophic failure.
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4 taco eaters like this review
Buy me
July 31, 2012
taco eater :
Mark from Somerville, MA United States
This is a high quality piston, much higher quality than the kstar/treat kit piston. Additional benefits: the piston skirt is 3mm shorter (longer intake duration), and the crown is shaped to accomodate a squish band (crown is 2mm higher with a smaller radius that comes down to a flat ring; kstar piston is just domed with a shallow curve). Also, the kstar piston takes a really wide needle bearing, wider than anything that treats sells, whereas this guy takes a more standard 16.3mm wide bearing. If you have a puch 45mm piston port and need a new piston, spend the extra money for this.
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0 taco eaters like this review
go kstar
September 9, 2011
taco eater :
Alex Sokolowski from denver , CO United States
if you are here you are seized... save the money and get a kstar kit. ;) trust me.
Good piston, bad ring 
Use the correct wrist pin. 
go kstar