High Performance Bicycle Engine Tips and Motorized

We all want our bicycle engines to push our bikes faster. Get exclusive engine modification tips and suggestions from us. Also check out some of our racing members builds
Dave31
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Warning to all about performance mods to your motorized bicycle
Replies
1
Views
39,080
Clotho
Clotho
Wevil Kenevil
Using unreeded HP carb set up... On non window piston and cylinder of same size
Replies
0
Views
45
Wevil Kenevil
Wevil Kenevil
Wevil Kenevil
Pk80 wildcat over heating(?)
Replies
3
Views
374
Wevil Kenevil
Wevil Kenevil
T
Reed valve windowed piston vs stock piston ported cylinder.
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0
Views
531
throttlejockey
T
Wevil Kenevil
Making your own woodruff key
Replies
4
Views
934
Wevil Kenevil
Wevil Kenevil
mrfubs
Stihl ms660 54mm project
2
Replies
28
Views
43,264
Sidewinder Jerry
Sidewinder Jerry
Doug Skullery
SAF clutch alternatives?
Replies
1
Views
1,503
Solarsyst
Solarsyst
Wevil Kenevil
Will this cause catastrophic failure?
Replies
4
Views
2,217
Wevil Kenevil
Wevil Kenevil
M
Engine stroke chart
Replies
4
Views
2,724
Mossy
M
Wevil Kenevil
STAND ALONE CDI COIL & MAGNETO
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2
Views
2,165
Wevil Kenevil
Wevil Kenevil
mapbike
Simple Crank Balance Method
Replies
7
Views
7,415
Mossy
M
D
anyone using arrows 4.5 or 9 hp kit?
Replies
19
Views
14,278
Scooterduder
S
Ratchetbirds
Anyone using a Mikuni VM16 ?
2 3 4
Replies
60
Views
25,618
Mossy
M
Sidewinder Jerry
HHO
Replies
3
Views
1,402
Sidewinder Jerry
Sidewinder Jerry
R
Velocity stack= good, bad or ehhh?
Replies
1
Views
2,090
Venice Motor Bikes
Venice Motor Bikes
Backwoods1989
Running E-85 Ethanol in my 66cc
Replies
8
Views
3,627
Sidewinder Jerry
Sidewinder Jerry
J
Best single bolt on mod
Replies
16
Views
5,980
Chad_Broski
Chad_Broski
M
Center Stand?
2
Replies
30
Views
11,702
MEASURE TWICE
MEASURE TWICE
A
Where to start project
Replies
3
Views
2,121
aqua zombie
A
Denis Zen
Should I ask my friend who owns a machine shop to build this?
Replies
14
Views
3,161
Denis Zen
Denis Zen
T
How Do I Make My 80cc Go Faster?
2
Replies
34
Views
77,285
Rasor235
R
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