Performance Mods

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Motorized bicycle performance modifications. Carbs, porting, exhausts, expansion chambers, reed valves, boost bottles and everything to make your motorized bicycle go really fast.
B
3-Speed motorized bike experiment
4 5 6
Replies
56
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45K
lucianomi
L
BikeBuilder43
Build or buy expansion chamber?
4 5 6
Replies
55
Views
6K
Jonj57
J
vcain
  • Locked
engine tweeks to increase hp
4 5 6
Replies
55
Views
24K
speedracer831
S
N
boost bottles: yay or nay?
4 5 6
Replies
53
Views
10K
adrian101
adrian101
45u
Off set key
4 5 6
Replies
53
Views
7K
Steve Best
Steve Best
Randall
Okay, this thing is now dangerous!
4 5 6
Replies
53
Views
5K
Randall
Randall
CODZ42
china performance
4 5 6
Replies
52
Views
15K
HeadSmess
HeadSmess
3
Some help needed.
4 5 6
Replies
52
Views
8K
32motleycrue
3
G
Auxiliary Fuel Tank for Diaphragm Carburetors
4 5 6
Replies
52
Views
16K
augidog
A
noah9988
Saw carb tuning help
4 5 6
Replies
51
Views
8K
Karl Snarl
Karl Snarl
Carlos motors
Expansion chamber
4 5 6
Replies
51
Views
6K
gary55
gary55
5
High-Performance Carb For Mitsubishi Engines
3 4 5
Replies
49
Views
13K
5-7HEAVEN
5
D
  • Locked
Unsaid info about high compression heads
3 4 5
Replies
49
Views
30K
warpt motosporst
warpt motosporst
T
twin carbs
3 4 5
Replies
49
Views
7K
HeadSmess
HeadSmess
Kitt
Affordable speed?
3 4 5
Replies
49
Views
6K
FurryOnTheInside
FurryOnTheInside
Copygod69
Alternator And belt drive
3 4 5
Replies
49
Views
4K
SirLurksAlot
S
D
  • Locked
Exhaust mod = performance boost
3 4 5
Replies
49
Views
28K
Stoneman
Stoneman
D
Dellorto flaw
3 4 5
Replies
48
Views
8K
lazylightning@mail.r
lazylightning@mail.r
R
Clutch upgrade
3 4 5
Replies
48
Views
12K
Karl Snarl
Karl Snarl
MAFirst4
  • Locked
Getting more power, high compression 66cc...
3 4 5
Replies
48
Views
14K
HeadSmess
HeadSmess
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