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
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39,038
Clotho
Clotho
Wevil Kenevil
Pk80 wildcat over heating(?)
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3
Views
225
Wevil Kenevil
Wevil Kenevil
T
Reed valve windowed piston vs stock piston ported cylinder.
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0
Views
493
throttlejockey
T
Wevil Kenevil
Making your own woodruff key
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4
Views
867
Wevil Kenevil
Wevil Kenevil
mrfubs
Stihl ms660 54mm project
2
Replies
28
Views
43,107
Sidewinder Jerry
Sidewinder Jerry
Doug Skullery
SAF clutch alternatives?
Replies
1
Views
1,491
Solarsyst
Solarsyst
Wevil Kenevil
Will this cause catastrophic failure?
Replies
4
Views
2,209
Wevil Kenevil
Wevil Kenevil
M
Engine stroke chart
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4
Views
2,698
Mossy
M
Wevil Kenevil
STAND ALONE CDI COIL & MAGNETO
Replies
2
Views
2,150
Wevil Kenevil
Wevil Kenevil
mapbike
Simple Crank Balance Method
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7
Views
7,315
Mossy
M
D
anyone using arrows 4.5 or 9 hp kit?
Replies
19
Views
14,232
Scooterduder
S
Ratchetbirds
Anyone using a Mikuni VM16 ?
2 3 4
Replies
60
Views
25,549
Mossy
M
Sidewinder Jerry
HHO
Replies
3
Views
1,396
Sidewinder Jerry
Sidewinder Jerry
R
Velocity stack= good, bad or ehhh?
Replies
1
Views
2,082
Venice Motor Bikes
Venice Motor Bikes
Backwoods1989
Running E-85 Ethanol in my 66cc
Replies
8
Views
3,610
Sidewinder Jerry
Sidewinder Jerry
J
Best single bolt on mod
Replies
16
Views
5,884
Chad_Broski
Chad_Broski
M
Center Stand?
2
Replies
30
Views
11,674
MEASURE TWICE
MEASURE TWICE
A
Where to start project
Replies
3
Views
2,113
aqua zombie
A
Denis Zen
Should I ask my friend who owns a machine shop to build this?
Replies
14
Views
3,152
Denis Zen
Denis Zen
T
How Do I Make My 80cc Go Faster?
2
Replies
34
Views
77,072
Rasor235
R
A
..
Replies
0
Views
1,769
Alfa4c
A
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