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.
F
Cylinder head designs for the 80cc / 66cc 2-stroke Chinese bicycle engine
2 3 4
Replies
38
Views
13K
Deleted member 12676
D
D
New Expansion Chamber Theory
3 4 5
Replies
41
Views
13K
Deleted member 12676
D
D
  • Locked
maximum RPM/speed
2
Replies
19
Views
13K
DAMIEN1307
DAMIEN1307
Jag
Moped expansion chamber
3 4 5
Replies
45
Views
13K
dparenti13
D
G
Increase intake length on 2/stroke
2
Replies
15
Views
13K
goodtime65
G
M
After exhaust mod...cutting out at top-end.
6 7 8
Replies
77
Views
13K
kaploink
kaploink
A
Disc Brake Gurus?....Sprocket Adapter
2 3
Replies
22
Views
13K
FurryOnTheInside
FurryOnTheInside
Z
Zomby Zack an old school chopper from scratch
2 3
Replies
29
Views
13K
spad4me
S
D
  • Locked
Best tuned pipe for "80cc"?
2
Replies
15
Views
13K
clay
C
P
Rock solid new turbo kits
3 4 5
Replies
46
Views
13K
Fabian
F
D
Detonation
2 3
Replies
23
Views
13K
Fabian
F
D
  • Locked
correct carb size
2
Replies
11
Views
12K
Fabian
F
A
Ultimate Hub for Direct Sprocket Bolt Up
3 4 5
Replies
47
Views
12K
Stryker
S
SloRyd
Great MZ65 Knockoff
2 3 4
Replies
33
Views
12K
YetiWoodz
YetiWoodz
A
Wild in the snow
4 5 6
Replies
58
Views
12K
Alaskavan
A
G
High compression head............
2 3
Replies
20
Views
12K
Deleted member 12676
D
A
Left side freewheel
2
Replies
14
Views
12K
Dockspa1
D
professor
How much HP can be sent thru the bike chain?
2 3
Replies
26
Views
12K
5-7HEAVEN
5
R
Clutch upgrade
3 4 5
Replies
48
Views
12K
Karl Snarl
Karl Snarl
Jayraye39
Ram air does indeed effect pressure inside the case and contributes to top speed.
9 10 11
Replies
107
Views
12K
Freddy Snottgrass
Freddy Snottgrass
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