These are on E-bay for $52.00 This is what they advertise:


"Yost Pro Power Tube -MIKUNI HSR 42 & 45
Just like the other Yost Power Tubes, the Yost Pro Power Tube for Mikuni, by design, produces a very fine mist. This very fine mist allows the fuel to stay in suspension longer for better control of air and fuel mixtures and can be almost perfectly matched for any throttle position. You can expect an increase of up to five H.P., improved mid range performance, and an incredible throttle response that will be sure to impress. The Yost Power Tube Kit comes complete with the Yost Power Tube, rubber washer and the Yost Float Bowl Drain Nut. (NOTE) This kit uses standard Mikuni jets, NO jets included in this kit. "

 

Well thats the cost of a good bar tab, so its not much to try, what the worst is you cant jet unleass yo have there jets.

 

Interesting item, I would love it if someone has used it and or knows about it also.

 

Kinda like a dynojet kit, but a different sales angle. they can't even use the word needle jet in the description, which is disconcerting.

 

The add states that you use stock mikuni jets. I also looked at these since I have a tm45 wich I beieve is a Mikuni hsr 45, I may be wrong on that but it sure looks like the carb I just got. I also was wondering if anyone has tried one, they claim 5 hp with that tube, but even 1 hp would be worth $50.00. RUSS

 

who's going to try it????

 

People have been using them in Harley's for years. Some swear by them and others say it's just another gimmick.