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Dirt bike mods, performance & tech info from Rich Rohrich & Eric Gorr.
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Sticky
Article
Motorcycle Myth # 5 - You need big ports to make big horsepower
Rich Rohrich
Jun 23, 2014
Replies
21
Views
16K
Jan 2, 2021
Rich Rohrich
Sticky
Article
Motorcycle Myth # 3 - Adding Mothballs to your fuel will increase the octane
Rich Rohrich
Jun 17, 2014
Replies
6
Views
9K
Jun 26, 2020
Rich Rohrich
Sticky
Article
Motorcycle Myth #4 – Unleaded fuels make less power
Rich Rohrich
Jun 17, 2014
Replies
8
Views
8K
Feb 22, 2022
RM_guy
Sticky
Article
Motorcycle Myths : #1
Rich Rohrich
Feb 20, 2014
Replies
7
Views
7K
Jan 2, 2021
Rich Rohrich
Sticky
Article
Motorcycle Myth #2 Summoning the gods of combustion speed
Rich Rohrich
Jun 17, 2014
Replies
6
Views
5K
Nov 3, 2023
Rich Rohrich
W
no start, no compression
whaley
Jul 7, 2005
Replies
16
Views
97K
Sep 2, 2022
Motomomma89
T
PW 80 Hop-ups
TommyJ
Aug 24, 2003
Replies
68
Views
80K
Aug 19, 2009
uk pw80
U
K
Can I use auto antifreeze?
KC10Chief
Dec 13, 2004
Replies
11
Views
69K
Dec 16, 2004
Lorin
M
Bike won't kick start, only push start..Please help!!
mmartini125
Apr 27, 2006
Replies
16
Views
64K
Dec 10, 2018
Ethanw
E
K
Symptoms of bad crank seals?
keen
Jun 20, 2003
Replies
3
Views
55K
Jun 22, 2003
billtx
B
S
What's the difference between a 420 and a 428 chain?
snb73
Mar 11, 2004
Replies
4
Views
54K
Mar 12, 2004
kelseybrent
K
Which MC FActory has the best "works" suspension.
Jeremy Wilkey
Jul 24, 2001
Replies
80
Views
52K
Apr 3, 2006
hillsNtrails
H
S
JR50 2nd gear??
Skitspuce
Jun 11, 2003
Replies
88
Views
51K
Jul 26, 2010
rjp
R
Lifan 125 valve adjustment
Wolf
Jun 15, 2010
Replies
41
Views
51K
Jul 9, 2010
Wolf
P
what causes 2stroke to smoke too much?
podfish
May 14, 2007
Replies
23
Views
48K
Oct 13, 2007
TheGDog
Forks or Shock which is more important?
Jeremy Wilkey
Jul 21, 2001
Replies
99
Views
48K
Jan 4, 2011
pesky nz
P
Spring Rate Preload and valving!
Jeremy Wilkey
Aug 27, 2001
Replies
55
Views
45K
Mar 29, 2013
JimDirt
J
A
New Rm 125 wondering gas/oil mix ratio
atticus9
Jun 2, 2007
Replies
6
Views
45K
Jun 4, 2007
micshol
M
Poll
"O" ring or non "O" ring chain?
a454elk
Mar 30, 2004
Replies
207
Views
45K
Apr 16, 2006
Jaybird
V
Just bought Multimeter, how do I test my stator, cdi, and coil?
VenomRS4
May 26, 2007
Replies
4
Views
45K
May 29, 2007
Bunya
B
P
Proper 2 stroke compression test?
pat-kdx
May 10, 2005
Replies
2
Views
44K
May 11, 2005
bikepilot
B
Carburetor Tuning - Intro, By Eric Gorr
Eric Gorr
Jun 14, 2014
Replies
0
Views
42K
Jun 14, 2014
Eric Gorr
E
what does it cost to bore a cylinder?
endosports
Jun 21, 2002
Replies
7
Views
40K
Nov 1, 2013
aravind
A
Y
YZ-80 top speed
YZ-Yamaha?
Jul 4, 2002
Replies
8
Views
36K
Aug 22, 2003
cr25096er
C
P
Spring Rate Calculator
plysWfire
Feb 22, 2007
Replies
3
Views
36K
Feb 22, 2007
placelast
P
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