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

Sticky threads

Dave31
  • Locked
  • Sticky
Warning to all about performance mods to your motorized bicycle
Replies
1
Views
29K
Clotho
Clotho

Normal threads

Warphones
  • Poll
Reaching 50mph on 66/80cc
Replies
30
Views
2K
Tyler6357
Tyler6357
bajaracer1
My first race bike build 212cc predator!
Replies
168
Views
75K
indian22
indian22
M
Center Stand?
Replies
21
Views
4K
indian22
indian22
M
Port matching case to cylinder
Replies
1
Views
319
Morbius18
M
breath_easy13
Removing Governor on 212cc, Oil sensor question -
Replies
5
Views
454
breath_easy13
breath_easy13
mrfubs
Stihl ms660 54mm project
Replies
24
Views
11K
mrfubs
mrfubs
J
Engine Not Starting After Port Work.
Replies
16
Views
5K
kelly dean
kelly dean
S
Bicylce-Engines expansion chamber
Replies
23
Views
8K
kelly dean
kelly dean
M
Best overall 66 cc carb?
Replies
36
Views
21K
BjevonT
B
P
Piston crown mod!
Replies
20
Views
10K
FOG
F
Jeff J10
PLEASE HELP!!
Replies
15
Views
850
javy mcdees
javy mcdees
F
Low end power mods!
Replies
20
Views
18K
Bossboots
B
A
Is my top speed of 25 MPH all it's got?
Replies
1
Views
560
indian22
indian22
S
How fast can your 49cc Really go?
Replies
60
Views
67K
Sldgehmmr
Sldgehmmr
G
dellorto phbg 19mm carb from treatland tuning woes
Replies
26
Views
9K
javy mcdees
javy mcdees
Nate&Brandi
What's the smallest rear sprocket you can/used? *story time with pics*
Replies
2
Views
916
zing
Z
C
What size carb should I use?
Replies
7
Views
1K
Jimmy Bloodmaker
Jimmy Bloodmaker
Mike_Honcho
Removing welch plug HuaSheng 49cc 4 stroke
Replies
11
Views
1K
Tom from Rubicon
Tom from Rubicon
DuctTapedGoat
Porting - are you actually taking advantage of it?
Replies
38
Views
24K
Tool Dog
T
stock762
Performance build WIP ...Video
Replies
18
Views
2K
Márk Vörös
M
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