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Dirt bike mods, performance & tech info from Rich Rohrich & Eric Gorr.
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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
Sticky
Article
Motorcycle Myths : #1
Rich Rohrich
Feb 20, 2014
Replies
7
Views
7K
Jan 2, 2021
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 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 # 5 - You need big ports to make big horsepower
Rich Rohrich
Jun 23, 2014
Replies
21
Views
16K
Jan 2, 2021
Rich Rohrich
The End of the 2 Stroke Guessing Game
jaguar
Mar 26, 2024
Replies
0
Views
26
Mar 26, 2024
jaguar
Poll
Looking for opinions on aftermarket plastics
MikeT
Mar 23, 2024
Replies
0
Views
38
Mar 23, 2024
MikeT
T
Help
Jr50 1st gear mod on 78?
ThatKidAlex
Feb 18, 2024
Replies
0
Views
49
Feb 18, 2024
ThatKidAlex
T
2 Stroke Engine Oils + Combustion
jaguar
Feb 14, 2024
Replies
0
Views
64
Feb 14, 2024
jaguar
2 Ways to Run Lean Although the Main Jet is Correct
jaguar
Jan 2, 2024
Replies
0
Views
105
Jan 2, 2024
jaguar
Engine Oil Combustibility
jaguar
Nov 22, 2023
Replies
0
Views
107
Nov 22, 2023
jaguar
2014 yz450f injector sizing for mod motor
blackbeard_lives
Oct 30, 2023
Replies
0
Views
114
Oct 30, 2023
blackbeard_lives
P
Please some help guys
PanosTsis
Oct 30, 2023
Replies
1
Views
119
Oct 30, 2023
RM_guy
Help
what engines can fit into a Suzuki rm85 frame without much modification??
GGabe
Feb 22, 2024
Replies
0
Views
119
Feb 22, 2024
GGabe
What are some of the most common types of materials used in dirt bike helmet construction, and what are the advantages and disadvantages of each?
Daniel R. Coffey
May 10, 2023
Replies
0
Views
133
May 10, 2023
Daniel R. Coffey
How-To
HERE IS A SOLUTION TO GETTING A BIKE TO RUN VERTICALLY
Decades-Behind
Apr 21, 2023
Replies
1
Views
139
Apr 22, 2023
RM_guy
D
Crf250R Jetting.
DieselDick
Aug 29, 2023
Replies
0
Views
144
Aug 29, 2023
DieselDick
D
A
Which oil should i use?
appelkatapulten
Oct 13, 2023
Replies
1
Views
156
Oct 13, 2023
truespode
A
I have a 2017 YZ250FXH w less than 10 hours of ride and looking for a buyer. If this is not the right forum does anyone know the best path for this?
akallaus
Apr 20, 2023
Replies
0
Views
164
Apr 20, 2023
akallaus
A
Help
2013 crf250r popping backfires
DrTwoHitCure
May 30, 2023
Replies
0
Views
184
May 30, 2023
DrTwoHitCure
M
KTM525SX suspension mods
MXTex
Jul 21, 2004
Replies
1
Views
190
Jul 26, 2004
Jeremy Wilkey
C
TPS, YZ250
casey_robert
Dec 19, 2023
Replies
3
Views
207
Dec 20, 2023
RM_guy
F
93 cr 125 shock trouble
foxstang90
Apr 28, 2004
Replies
1
Views
214
Apr 28, 2004
MXTex
M
S
Question
Help to diagnose for stroke stalled won’t start clicks
Stnick89
Jul 22, 2023
Replies
1
Views
222
Sep 16, 2023
Clark Jeff
S
06 crf450r breather hose help.
sean450r
Jul 31, 2023
Replies
0
Views
226
Jul 31, 2023
sean450r
S
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