In the other thread referencing this motor, the price for the engine package was quoted to ultimately be $3,000. I know how costly shifter motors can get, but even then, for a pit-bike derived engine I’m assuming is manufactured in China, that price seemed pretty high.
Whatever the cost may be, the recent discussion about these cheap, 4-stroke, pit-bike shifter engines hint at the much missed karting class the pit bike motor is supposed to emulate: the (2-stroke) 80 SHIFTER .
If the trends in recent years say anything, it’s that karting is “downsizing” with their motors. 125 TaGs used to be ubiquitous, now it’s the air-cooled 100cc TaG engine, along with the Briggs 206. Logic would suggest there is a market for a smaller, lower-powered, less expensive shifter engine as well.
Problem is, there isn’t many 80cc, or 85cc, shifter engines to be found. Honda used to dominate the moto-based 80 shifter class in numbers, just like they did with their CR125 moto, but Honda hasn’t made a 2-cycle 80/85cc motocross bike since 2007. And I suppose there are no manufacturers in China or elsewhere in Asia that build a cheap 2-stoke motocross-based engine either, or else someone would mounted one on a go-kart by now.
Yamaha still builds an 85cc motocross bike however, along with Kawasaki and KTM. I don’t know if any of these motors would work well on a kart, or if they would actually be “cheap”. But Yamaha changed the face of karting with their famous KT100, could they make it work with the YZ85? I just happen to have an old YZ85 engine I bought on ebay last year. and I want to bolt it on a kart and find out myself.