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:::YFZ450 Performance:::
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Honda Throttle On Yfz
(3 replies)
Something Wrong With My Powerbomb?
(3 replies)
Do You Need Head Work?
(0 replies)
Yfz450 Kick Start
(7 replies)
Cam Mod
(33 replies)
What Piston Should I Get For My 06
(3 replies)
Motor Issues
(0 replies)
Low Compression
(19 replies)
Got A Question About My Stock Head?
(4 replies)
New To Yfz450s
(1 reply)
Help! No Spark After Rollover
(8 replies)
Ceramic Coating
(11 replies)
Valve Noise Or?
(8 replies)
From Sparks Big Core To Stock-jetting ?
(9 replies)
Motion Pro Twist Throttle Problems
(3 replies)
Infamous Bog & Hesitation Sos
(5 replies)
Need Help With Power
(5 replies)
Jetting Question On 470 Ported And Sredrum Taper Carb
(5 replies)
Exhaust Wrap?
(13 replies)
Coolant Bottle Necessary?
(6 replies)
No Power
(8 replies)
Innovate Lm-2 Digital Wideband O2 Sensor Kit
(10 replies)
Falicon Stroker Cranks And Tall Cylinders
(1 reply)
15t Sprocket Who Runs Them?
(10 replies)
Infamous Bog & Hesitation Sos!
(3 replies)
Valves
(6 replies)
Gytr
(7 replies)
Need Some Advice
(11 replies)
'06 Yfz Oil Radiator
(5 replies)
Water Pump Failure
(3 replies)
14:1 Comp And 101 Octans
(3 replies)
Few Questions About 2005-2006 Changes
(7 replies)
Dyno #s Sound Right?
(40 replies)
What Is The Yfz450r Getting For Stock Hp At Sea Level
(0 replies)
Problems With Esr Intake
(7 replies)
Can't Figure It Out
(12 replies)
Oil Coming From The Vent Box
(4 replies)
Rebuild, Big Bore Or Not?
(1 reply)
Need Some Help
(5 replies)
Noisy Motor/ Hot Pipe Normal?
(1 reply)
Stroker Crank?
(0 replies)
Stroker Crank?
(0 replies)
Spark Plug Black
(3 replies)
Guys, Please Help!
(10 replies)
Which Jett Kit Is Best
(9 replies)
Factory 7 Exhaust
(17 replies)
05 Head
(2 replies)
Need Idea On Jetting?
(1 reply)
Venom 14.25 Piston
(6 replies)
Removing Throttle Cable
(4 replies)
Edelbrock Carb
(1 reply)
Yoshimura Rs-7 Jetting
(2 replies)
Engine Swap?
(15 replies)
Ceramic Coating On Mid/head Pipes
(11 replies)
Not Starting. But Different Than Others Maybe?
(9 replies)
I Got Questions =)
(14 replies)
Check It!
(27 replies)
Please Help! Yfz Won't Start
(9 replies)
High Pitched Whining/grinding Noise
(12 replies)
Thunder Alley Out Of Bizz?
(0 replies)
It's Bad....
(42 replies)
Stator Wire ?, Fuel Or Coolant In Oil?
(6 replies)
What's The Best Way To Go As For A Stock Bore Cylinder?
(4 replies)
How Big Is To Big?
(8 replies)
Hinson Or Barnett Clutch Springs?
(7 replies)
Help With Motor Rebuild?
(3 replies)
Oil Foaming- Is This Bad?
(5 replies)
Yz450 Muffler
(7 replies)
Shifter Loose
(1 reply)
Antifreeze Problem
(1 reply)
Carb Boring
(5 replies)
Kick Starting
(11 replies)
Ring Question
(8 replies)
Jetting Suggestions?
(2 replies)
Oil Filter
(8 replies)
Bad Cdi?
(2 replies)
Stock Bore Size?
(2 replies)
Intake And Cdi Questions
(3 replies)
Opinions On Piston
(6 replies)
Big Bore Vs Stroker
(3 replies)
Need Help
(1 reply)
Needs Another Gear
(5 replies)
04 Motor In 06 Yfz
(1 reply)
First Ride Question!
(2 replies)
Changes Jetting
(8 replies)
Valve Sizes
(2 replies)
Rattling
(5 replies)
Running Hot?
(9 replies)
Gapless Rings
(12 replies)
Crankshaft Oil Seal?
(8 replies)
Exhaust Yfz 450! Jsr...
(19 replies)
U 4.2
(5 replies)
Upgrading
(32 replies)
Help Me Please
(5 replies)
Exhaust Cover?
(7 replies)
Cylinder Cutting
(4 replies)
How Big Did I Go?
(4 replies)
Fci Intake Question
(8 replies)
Cam Mod With Big Bore Kit?
(3 replies)
Busted My Carb
(4 replies)
Won't Idle
(9 replies)
Jetting With New Porting
(1 reply)
Question About The Carb
(2 replies)
Somthing Isnt Right. Did My Mishap Cause It?
(8 replies)
Porting Pics
(3 replies)
A Little To Much Yamabond
(3 replies)
Thread Size
(2 replies)
A Little To Much Yamabond
(4 replies)
Stock Air Box
(18 replies)
Cutting Out At Low Rpms
(0 replies)
Could Use Your Suggestions On Piston And If I Should Stroke It On The
(6 replies)
Head Question
(1 reply)
Cylinder O Ringing
(5 replies)
Cams For Bottom End/torque
(9 replies)
Valves
(0 replies)
Backfire
(14 replies)
Header's And Pistons
(3 replies)
New Pipe
(13 replies)
On The Road And I Left My Service Disc At Home
(4 replies)
Sh*t ... So What Does A New Carbuerator Cost?
(19 replies)
Trouble Shifting Gears
(10 replies)
Zip Tie Accelerator Pump / Leak Jet Questions
(16 replies)
Wrist Pin Question
(8 replies)
New Venom Exhaust
(4 replies)
Zip Tie Carb Mod?
(7 replies)
Yfz 450 Kick Start - Will A Yz 450 Kick Start Work?
(1 reply)
Yfzr Dynojet/gytr Power Commander
(1 reply)
Oil Breather Box
(3 replies)
My Exhaust
(12 replies)
Where To Buy?
(5 replies)
Dasa Exhaust
(6 replies)
Exhaust Shooting Out Flames Running Glitchy Helppp
(1 reply)
Web Cams And Venom Piston Clearance?
(1 reply)
Overreving Problem
(10 replies)
Porting Head And Boring Carb?
(9 replies)
Hot Cam ?
(0 replies)
Different Methods Of Tunning
(11 replies)
What Should I Run? Head Question
(1 reply)
Finally Got The Cases Split...
(5 replies)
07 Sparks
(1 reply)
Plug Gap?
(3 replies)
Jetting Question
(9 replies)
Motor Build For Mx?
(11 replies)
Something Strange Happened... Won't Run Now
(10 replies)
Hard Start, Runs Great
(5 replies)
Header Pipe Red Hot
(15 replies)
New 09 Yfz450r(which Parts)
(35 replies)
Starting Problem
(1 reply)
Side Cover Interchange
(2 replies)
Exhaust Wrap?
(6 replies)
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