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
39,238
Clotho
Clotho
Wevil Kenevil
Using unreeded HP carb set up... On non window piston and cylinder of same size
Replies
1
Views
471
Wevil Kenevil
Wevil Kenevil
Wevil Kenevil
Pk80 wildcat over heating(?)
Replies
3
Views
635
Wevil Kenevil
Wevil Kenevil
T
Reed valve windowed piston vs stock piston ported cylinder.
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0
Views
626
throttlejockey
T
Wevil Kenevil
Making your own woodruff key
Replies
4
Views
1,064
Wevil Kenevil
Wevil Kenevil
mrfubs
Stihl ms660 54mm project
2
Replies
28
Views
43,979
Sidewinder Jerry
Sidewinder Jerry
Doug Skullery
SAF clutch alternatives?
Replies
1
Views
1,597
Solarsyst
Solarsyst
Wevil Kenevil
Will this cause catastrophic failure?
Replies
4
Views
2,333
Wevil Kenevil
Wevil Kenevil
M
Engine stroke chart
Replies
4
Views
2,839
Mossy
M
Wevil Kenevil
STAND ALONE CDI COIL & MAGNETO
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2
Views
2,280
Wevil Kenevil
Wevil Kenevil
mapbike
Simple Crank Balance Method
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7
Views
7,574
Mossy
M
D
anyone using arrows 4.5 or 9 hp kit?
Replies
19
Views
14,542
Scooterduder
S
Ratchetbirds
Anyone using a Mikuni VM16 ?
2 3 4
Replies
60
Views
26,508
Mossy
M
Sidewinder Jerry
HHO
Replies
3
Views
1,525
Sidewinder Jerry
Sidewinder Jerry
R
Velocity stack= good, bad or ehhh?
Replies
1
Views
2,177
Venice Motor Bikes
Venice Motor Bikes
Backwoods1989
Running E-85 Ethanol in my 66cc
Replies
8
Views
3,835
Sidewinder Jerry
Sidewinder Jerry
J
Best single bolt on mod
Replies
16
Views
6,203
Chad_Broski
Chad_Broski
M
Center Stand?
2
Replies
30
Views
12,109
MEASURE TWICE
MEASURE TWICE
A
Where to start project
Replies
3
Views
2,227
aqua zombie
A
Denis Zen
Should I ask my friend who owns a machine shop to build this?
Replies
14
Views
3,351
Denis Zen
Denis Zen
T
How Do I Make My 80cc Go Faster?
2
Replies
34
Views
77,991
Rasor235
R
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