How fast can your ZX50 go after upgrades?

[zombie]

GIT UM BOYS!

[thebatman]

Step AWAY fom the light.......

[zombie]

NO Go into the lite...

[beastly808]

Hello from Hawaii. I'm a newbie here, got a  2003
Zx50 that goes 69-74 gps recorded. Mods for my zx are 72cc polini contessa ported, ruima 44mm crank, ported block, kelli pulley with stock 8.5 an6 rollers, kelli heavyo clutch with 2000 springs and,1500 center spring, oko 28mm carb with 135 mj n 38pj, malossi primary gears, pg long exhaust pipe, and stock cdi. So with all this, motor comes out to 77cc. Sorry no pics.
Wanna thank you guys for the motivation on keepin my  zx rather than selling it.

[wordslinger]

..welcome to th forum beastly!..

..sounds like you got y'self a good setup!

 

[beastly808]

.Thanks wordslinger.

I'll post up pics soon.
Down here in the 808 its mostly og elite n dd50.

[zombie]

Welcome aboard Beastly. There are a few bad ass zx's around the forum. Always good to have another one

[zombie]

I forgot to ask. What is your final drive ratio? I am trying to get lower than 8.3:1. Tooooo many rpm for long 70mph runs

[beastly808]

how you doing zombie.
well my gears are from malossi usa, they are primary gears 16x32 which will be 6.9 to 1 ratio, they are also straight cut.
my final gears are stock just changed the primaries.
with this your rpms should stay at a minimum with alot more power yet to be used. trust me, with the right tuning, this should put you well above 70mph in no time. i've reach 69mph gps recorded in only 1/4 to a little pass 1/2 throttle.
the draw back to this is that you will lose low end. thats  why i use staggered roller weights 6 and stock 8.5 for my size.
from what i've learned here( you might know already) tuning is not made only for the motor but also the rider who uses it.
find the roller weight set up for you and your zx will surprise you.
hope this helps you and everyone else out.
 Sorry i forgot the gears are made for kymco djy, it will fit perfect on a zx50.

[beastly808]

oh i forgot, the guy who said that his zx goes 70 cruise then to powerband of 80-85, its not possible without out your frame flexin.
that must be a drag bike, cuz where i from not even a full stroked 82cc to 125cc elite's, dd50's, and sym (dio's) reach that, yet alone be for daily use.
not to say anything bad, but please its pass your bedtime WAKE UP!lol

[thebatman]

Sorry i forgot the gears are made for kymco djy, it will fit perfect on a zx50.


I learned something new right there/.....

[Shaka]

I was told that they don't fit...news to me also.

[thebatman]

Yeah, it's been my experiance.. Gears are a bitch to get for the z..(malossiusa has a primary, or did. Our gears are history these days.)

[Shaka]

The primaries I've seen from Malossi are for the DJY...I was told they didn't fit the ZX.
Can't speak from experience on that one though.  I went with the same Motorio secondaries you have.

[thebatman]

I had seen a SWEEET price on some but of course it turned out to be for another kymco.(think it was the S9  )
Would be nice for both sets though...