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645
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To Anyone With Aftermarket Exhaust...
ketchupYFZ450
Aug 31, 2004
17
18
19
361
203K
Jul 21, 2023
by
warezhunter2001
E
Sticky
Jetting FAQ's
edgerat
Sep 11, 2003
55
56
57
1K
382K
May 12, 2023
by
jordanmolinaro98
Sticky
Jetting,mods and elevation...
project_yfz
Apr 24, 2014
2
20
16K
Apr 16, 2021
by
Young Duner
Sticky
Clutch replacement "tutorial"
Joester
Jun 3, 2011
2
22
56K
Aug 26, 2020
by
Tyfzr45023
Y
Sticky
Kickstart Installation Walkthrough
Yzblue
Aug 5, 2006
6
7
8
144
143K
Apr 18, 2020
by
Mudd slinger
B
Sticky
2012 Carb removal and jetting with jet part numbers!
bcammons
Jun 19, 2012
2
33
35K
Mar 29, 2019
by
JDYFZ
Sticky
the MOTHER FCR tuning / INFO thread
mixxer
Mar 11, 2013
3
4
5
97
192K
Dec 5, 2018
by
704Justo
Sticky
Yfz Athena 480cc
Terse
Oct 1, 2007
9
10
11
208
89K
May 8, 2018
by
SilsbySilverado103
Sticky
Spring Mod Full Tutorial
Joester
May 6, 2009
2
3
4
71
55K
May 8, 2018
by
xjgiles_
Sticky
Porting..Theory...Tools..Techniques
mixxer
May 22, 2012
11
12
13
249
116K
Jan 22, 2018
by
brettk
Sticky
Dyno Pipe Test 2
Terse
Apr 5, 2008
8
9
10
196
75K
Sep 9, 2017
by
Terse
Sticky
YFZ Cam Specifications
mbirt
Jun 13, 2012
2
38
50K
Sep 9, 2017
by
Terse
P
Sticky
Oil Mod Completed
pooperscouper
Apr 30, 2006
6
7
8
151
117K
May 31, 2017
by
YFZLTRrider
Sticky
Yfz450 Cam Mod
Terse
Nov 15, 2006
26
27
28
544
350K
Mar 22, 2017
by
Terse
Sticky
Jetting, basic FCR carb and jet location pictures
husker525
Jan 17, 2011
2
3
43
88K
Sep 6, 2016
by
sketty20
Sticky
Mixxer/ Sredrum dyno cam test
Terse
Jul 30, 2012
9
14K
Feb 1, 2016
by
mixxer
S
Sticky
Oil upgrade kit for 501 cc motors. We now can do it
sabrecat
Apr 1, 2012
11
7K
Feb 12, 2014
by
04Yfz450kid711
Sticky
YZ Clutch Modification
Duane
Aug 21, 2007
5
6
7
123
79K
Feb 10, 2014
by
04Yfz450kid711
Sticky
CP pistion question
flavtfan
Jan 26, 2013
2
3
4
65
18K
Oct 28, 2013
by
ldjbuff
Sticky
Dyno Pipe Test
Terse
Dec 8, 2006
16
17
18
342
146K
Feb 3, 2013
by
flavtfan
R
Sticky
Pipe Shootouts Condensed
rcbros
Feb 9, 2009
Locked
6
30K
Feb 9, 2009
by
YFZER359
O
Need help with carb jets and jetting.
Ozzy826
5d ago
1
85
5d ago
by
skinnyb
2005 YFZ 450 drops a valve
Damienbarton
Feb 13, 2024
15
428
Feb 29, 2024
by
skinnyb
C
Ecu
Christopher1991
Feb 28, 2024
5
223
Feb 29, 2024
by
skinnyb
F
2005 yfz450 No start and backfiring
Ford2002
Aug 7, 2022
2
814
Feb 26, 2024
by
Ford2002
I
How many jet sizes to go up from stock exhaust to full exhaust?
Itr.#1446
May 27, 2011
5
7K
Feb 21, 2024
by
dayznut8
Y
Coolant Leaking Weep Hole
yfz05
Jun 6, 2008
8
24K
Feb 9, 2024
by
100092
R
Clockwise Or Counter Clockwise, Starter Rotation....
RappYFZ
Mar 31, 2007
9
15K
Jan 30, 2024
by
desertrider900
Moving forward when in gear with clutch lever pulled in
hew
Jan 27, 2024
2
201
Jan 28, 2024
by
skinnyb
Intake Cam Tight
rnd660
Jan 15, 2008
8
6K
Jan 28, 2024
by
kbrown200796
E
Motor Swap
EazyPC
Jan 19, 2024
0
89
Jan 19, 2024
by
EazyPC
T
no dipstick or glass window - how to check oil?
TomBo
Jan 16, 2024
8
268
Jan 17, 2024
by
TomBo
07 wr450 crank
Fredbax
Jan 9, 2024
0
73
Jan 9, 2024
by
Fredbax
2005 YFZ 450 randomly loses power
Damienbarton
Dec 6, 2023
2
50
1K
Jan 7, 2024
by
Damienbarton
Engine ice really works!
Twisted1
Sep 7, 2011
22
9K
Jan 5, 2024
by
fowler4238
Used clutch
hew
Jan 3, 2024
2
166
Jan 3, 2024
by
hew
W
no spark
wingnutmike
Jan 31, 2012
18
46K
Dec 31, 2023
by
brunojoshalvarez
No spark unless I give it gas
busterjones
Sep 18, 2023
2
213
Dec 31, 2023
by
busterjones
D
Left crankcase cover
Dirtymaxx
Nov 13, 2023
2
280
Dec 31, 2023
by
busterjones
B
Cam Lobe Size Question - Intake Cams
BigRizz2
Dec 30, 2023
0
84
Dec 30, 2023
by
BigRizz2
Z
YFZ Fresh Rebuild. Backfires. Won't Start
ZRICE28
Feb 7, 2014
14
14K
Dec 29, 2023
by
jhuff7719
B
Big bore kit
BIGBEN
Nov 30, 2023
3
401
Dec 20, 2023
by
BIGBEN
Fuel Custom's new GNCC Airbox setup
kb motorsports
Dec 16, 2023
0
316
Dec 16, 2023
by
kb motorsports
RP Race Intake - Installation
brzewnicki
Dec 16, 2023
1
556
Dec 16, 2023
by
brzewnicki
hmf vs. barkers
LimeBrute750
Nov 17, 2011
7
2K
Dec 13, 2023
by
kb motorsports
C
What stator is this?
Cooter
Dec 10, 2023
1
337
Dec 11, 2023
by
Cooter
K
Sparking with out engine turning over?
kl1aplay
Dec 11, 2023
0
112
Dec 11, 2023
by
kl1aplay
M
Best exhaust? Good mods
Mario_11
Oct 27, 2023
3
585
Nov 18, 2023
by
kb motorsports
carb drain problem!
quadrider808
Aug 17, 2011
11
5K
Nov 13, 2023
by
cameronmack12345
M
Dasa Shorty vs classic
Mario_11
Oct 27, 2023
1
226
Nov 3, 2023
by
kb motorsports
C
Won’t start with new battery
Coke.Hilton11
Aug 28, 2023
1
322
Oct 22, 2023
by
busterjones
Yfz450 getting hot quick
hew
Oct 6, 2023
2
592
Oct 22, 2023
by
busterjones
E
New clutch assembly won't move in gear
Edwin_glin
Dec 3, 2019
14
3K
Oct 13, 2023
by
StevenR
M
Lots of Popping on Acceleration!
Mcp3ak
Sep 29, 2023
6
419
Oct 12, 2023
by
Mcp3ak
X10 Vortex ECU gets hot 450R SE 2016
Henry166113
Oct 1, 2023
2
280
Oct 2, 2023
by
Henry166113
04 Not Turning Over Or Even Clicking
crazycooter
Feb 28, 2010
9
3K
Sep 23, 2023
by
YfZdale
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YFZ450 Engine, Intake, Exhaust, Carb, Big Bore Kits.
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