Performance Mods

Post thread
Motorized bicycle performance modifications. Carbs, porting, exhausts, expansion chambers, reed valves, boost bottles and everything to make your motorized bicycle go really fast.
E
RockSolidEngines billet head.
6 7 8
Replies
74
Views
15K
AussieSteve
AussieSteve
Leroybrown420
  • Locked
Dellorto SHA Clone - Running rich
2 3
Replies
27
Views
15K
Rolling2High
R
D
70cc gas scooter pocket bike parts boost bottle
2 3 4
Replies
35
Views
15K
gone_fishin
G
D
  • Locked
Reed valves and torque pipe
3 4 5
Replies
46
Views
15K
HeadSmess
HeadSmess
CODZ42
china performance
4 5 6
Replies
52
Views
15K
HeadSmess
HeadSmess
lowracer
Getting Aero - Speed Gains
2
Replies
15
Views
15K
Toon Guy
T
O
Wolfpack CDI-Coil
2 3 4
Replies
36
Views
15K
Fabian
F
5
Any engine modifiers out there?
2 3
Replies
29
Views
14K
crazyman
C
C
New CDI and coil combo for racing available!
4 5 6
Replies
57
Views
14K
bahramu
bahramu
P
Performance Carburetor Options
3 4 5
Replies
46
Views
14K
Deleted member 12676
D
D
  • Locked
DIY Expansion Chamber
Replies
0
Views
14K
Deleted member 12676
D
Stoneman
  • Locked
Port timing
7 8 9
Replies
87
Views
14K
James addison
J
C
Weak 80 cc motor improvements + dellorto main jets
2
Replies
15
Views
14K
John Ryan
J
A
Chopper Trike Stingray
2
Replies
13
Views
14K
Alaskavan
A
D
CDI upgrade; why?
Replies
6
Views
14K
Deleted member 12676
D
B
New Build, 5 sp Chopper @ over 40+ mph
2 3
Replies
21
Views
14K
cargo-master
C
G
Homebuilt "Primary" Belt-Drive
2 3 4
Replies
31
Views
14K
gone_fishin
G
MAFirst4
  • Locked
Getting more power, high compression 66cc...
3 4 5
Replies
48
Views
14K
HeadSmess
HeadSmess
A
2 Speed Transmission
2 3 4
Replies
32
Views
14K
5-7HEAVEN
5
5
High-Performance Carb For Mitsubishi Engines
3 4 5
Replies
49
Views
13K
5-7HEAVEN
5
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