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.
DuctTapedGoat
  • Locked
Dual Carb System
2
Replies
13
Views
10K
tothebeach
T
S
Dual Carb 70cc "blue oni"
2
Replies
18
Views
4K
gone_fishin
G
J
Drilled Piston/Wrist Pin Preachin'
Replies
2
Views
1K
Jonj57
J
T
Drag Bike Questions
2
Replies
14
Views
2K
HeadSmess
HeadSmess
SuperDave
Double Jug Gasket???
Replies
4
Views
4K
gary55
gary55
CuriousJojo100
Does changing port timing affect air/fuel ratio?
2
Replies
12
Views
2K
CuriousJojo100
CuriousJojo100
C
  • Question
Does anyone know of cheap performance upgrades
2
Replies
15
Views
5K
Karl Snarl
Karl Snarl
S
Does anyone have experience with a wingsmoto exhaust?
Replies
2
Views
966
GreasyChris
GreasyChris
C
Do you need to rejet with SBK pipe?
Replies
3
Views
2K
motorpsycho
motorpsycho
A
Do you need to have a windowed piston if you have a third transfer port?
Replies
2
Views
976
ImpulseRocket
ImpulseRocket
H
do shift kits make you go faster?
2 3
Replies
21
Views
20K
2old2learn
2
cloakedvillain
Do performance mods improve economy if ridden gently?
Replies
5
Views
999
Sidewinder Jerry
Sidewinder Jerry
Aikaru
  • Question
Do Long Offset Intakes Reduce Performance?
2 3
Replies
21
Views
3K
yuckfoo
Y
MattHatter
Do I need a hotter plug??
2
Replies
18
Views
3K
MattHatter
MattHatter
B
do expansion chambers really work?
Replies
6
Views
4K
BSA
B
D
DLH Saf Clutch Issues
2 3
Replies
26
Views
2K
Deleted member 35519
D
F
DIY Wal Philips fuel injector
Replies
2
Views
4K
DetonatorTuning
DetonatorTuning
D
  • Locked
DIY Expansion Chamber
Replies
0
Views
14K
Deleted member 12676
D
W
DIY degree wheel
Replies
6
Views
786
Chainlube
Chainlube
A
Disc Brake Gurus?....Sprocket Adapter
2 3
Replies
22
Views
13K
FurryOnTheInside
FurryOnTheInside
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