True they stopped making the ZOT.. BUT the number you mentioned isn't the correct replacement.. The part number is below... Its a totally new design and uses 1mm top and middle rings.. We have sold a ton of them over the past year ($28.95 Piston & Rings)
13101-Z4M-000 Piston
13010 - Z4M-000 Rings
Still Made in Thailand
Not legal in bsp or bp
according to the bp 2014 rule sticky it only says that piston is to be 0 pop up unless there is more to the rule then he posted?
The Honda 13101-Z0T-810 flat top piston has now superseded to 13101-ZH8-010, has a longer skirt which may not clear the crank counterweights with the GX/clone 196cc stroke, and is now made in china. The last Z0T I bought was made in thailand. Just a heads up guys
Not legal in bsp or bp
Actually, the way I read the ring rule for BP, I think they would be legal. It says "appear stock"