HELP: 4 Stroke Upgrades

GoldenMotor.com

4stroke

New Member
Dec 5, 2010
8
0
0
California
Hello, i need some help with upgrading my 4 stroke bike it is a belt drive and has a quiet muffler.. i want to start upgrading it and make it go FASTER but i need help with what parts and sizes. Please Help thanks.

This Engine Exactlly----> http://www.google.com/imgres?imgurl=http://img.hisupplier.com/var/userImages/2009-11/18/zncmotorbike$160652336(s).jpg&imgrefurl=http://zncmotorbike.en.hisupplier.com/product-353016-4-stroke-bicycle-engine-kit.html&usg=__rFn4mE-Yo0B25buBC2rrT3UTkqw=&h=436&w=500&sz=29&hl=en&start=0&zoom=1&tbnid=rdBbMYisrijRZM:&tbnh=138&tbnw=145&prev=/images%3Fq%3D4%2Bstroke%2Bbicycle%26um%3D1%26hl%3Den%26sa%3DX%26biw%3D1280%26bih%3D709%26tbs%3Disch:1,isz:m0,332&um=1&itbs=1&iact=hc&vpx=1007&vpy=183&dur=463&hovh=187&hovw=214&tx=163&ty=124&ei=su77TJv0FYLUtQPU3aj3DQ&oei=su77TJv0FYLUtQPU3aj3DQ&esq=1&page=1&ndsp=18&ved=1t:429,r:17,s:0&biw=1280&bih=709
 

scotto-

Custom 4-Stroke Bike Builder
Jun 3, 2010
6,505
24
38
Ridin' inSane Diego, CA.
Hello, i need some help with upgrading my 4 stroke bike it is a belt drive and has a quiet muffler.. i want to start upgrading it and make it go FASTER but i need help with what parts and sizes. Please Help thanks.

This Engine Exactlly----> http://www.google.com/imgres?imgurl=http://img.hisupplier.com/var/userImages/2009-11/18/zncmotorbike$160652336(s).jpg&imgrefurl=http://zncmotorbike.en.hisupplier.com/product-353016-4-stroke-bicycle-engine-kit.html&usg=__rFn4mE-Yo0B25buBC2rrT3UTkqw=&h=436&w=500&sz=29&hl=en&start=0&zoom=1&tbnid=rdBbMYisrijRZM:&tbnh=138&tbnw=145&prev=/images%3Fq%3D4%2Bstroke%2Bbicycle%26um%3D1%26hl%3Den%26sa%3DX%26biw%3D1280%26bih%3D709%26tbs%3Disch:1,isz:m0,332&um=1&itbs=1&iact=hc&vpx=1007&vpy=183&dur=463&hovh=187&hovw=214&tx=163&ty=124&ei=su77TJv0FYLUtQPU3aj3DQ&oei=su77TJv0FYLUtQPU3aj3DQ&esq=1&page=1&ndsp=18&ved=1t:429,r:17,s:0&biw=1280&bih=709
Not sure what motor you have but a straight-pipe exhaust and some sort of shift kit can make it go faster, but will also be louder.
 

MotorBicycleRacing

Well-Known Member
Jul 28, 2010
5,844
109
63
SoCal Baby!!!
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Hello, i need some help with upgrading my 4 stroke bike it is a belt drive and has a quiet muffler.. i want to start upgrading it and make it go FASTER but i need help with what parts and sizes. Please Help thanks.
4 stroke bicycle engine kit ZNC142FA manufacturer from China (Mainland) Zhejiang New century power machinery co, .ltd.
You say it's a belt drive, does it run a chain to the back wheel?
belt gearbox? A Grubee 4G?

Where did you buy it?

How FAST does it go now?
 

stewpedassle

New Member
Feb 16, 2012
89
1
0
florida
i have same kit try
49cc 4-Stroke Carb Bored & Reworked


for 48 dollars at affordablegokarts.com drill couple holes in air filter housing and take cap off muffler i weigh 240 and go 38 mph ps also have 36tooth drive sprocket..wee..wee..wee..wee.