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My kit came in and I installed the exhaust first. First ride over 40 MPH, an easy 10 MPH gain from that alone. Plus awesome acceleration. I then put in the new variator and weights. I didn't really see any results but I have different weights and springs to try. I'm just happy this thing has potential. I was really starting to worry. I'll keep you posted of final results.

Bigger main jet? Tell more about the kit? Name of the exhaust?

Okay, my super 8 has been at the dealer for two weeks now. They can't get it to go over 27mph. They have been in contact with the factory rep and now have ordered new reed valve for it. The rep said they have a few with leaking reed valves. I'll keep you posted if this works.

It´s easy to get the Kymco 2t to 50 mph. The 2-stroke version uses Kymco’s clone of Honda’s AF18/AF16 motor that dates back to the mid 90’s when these two companies parted ways in the 90’s. This motor is a basic design (air cooled, 2-valves, carburated) but its reliable and has a lot of performance potential. A derestricted Super 8 is capable of 45-50mph and these motors can easily be modified to 70mph and beyond. The ’94 - ’01 Honda Elite SR shares the same basic motor as the 2-stroke Super 8 (with some small differences) 

Modify the airbox so the carb (Keihin 16) get more air. Larger mainjet and get the engine a new exhaust.

http://www.racingplanetusa.com/exhaust-naraku-traffic-kymco-horizontal-p-12098-1.html?cPath=2_21356_21362&sessID=c632b7b2a12b5963bed149d9bf34ef47

The sound and the size is like the original exhaust. I have remove the bushing.

More air.. two new hole 22 mm.. 

I did a lot to roller testing today.

All testing done with Malossi Multivar and 85 main jet with stock exhaust.

6gr Dr. Pulley sliders - Good takeoff, dead in the mids and 30 mph top speed.

7gr Dr. Pulley sliders - Good takeoff, dead in the mids and 32 mph top speed.

7gr. rollers - Good takeoff, OK in the mids and 33 mph top speed.

8.5 gr. stock rollers - OK takeoff, OK in the mids and 38 mph top speed.

9 gr. Malossi rollers - Ok takeoff, OK in the mids and 40 mph top speed.

The best overall ride and feel for me was the Malossi 9gr rollers. I was hoping to find more top speed but the scoot just will not make anymore rpms with that tall of a final drive. I can not see move up to 10gram weights going any faster.

You must modify the airbox. The original airtube to the carb is to small. I have the same Mallossi multivar(7,5g) and Naraku traffic exhaust. Bigger airtube from a Derbi Senda, 90 mainjet. Easy runs 50 mph.