YZ400F/426F/450F/450FX

50185 topics in this forum

1. What did you do to your Yamaha YZ4XXF today? 1 2

   By ThumperTalk, December 10, 2020
   • 39 replies
   • 4.7k views
   • 
   • Jimbob01
   • February 16

3. 2010/2011 YZ450 Owner EFI & Timing Map Database 1 2 3

   By grayracer513, December 26, 2009   

   • Offroad
   • Yamaha
   • (and 4 more)

     Tagged with:

     • Offroad
     • Yamaha
     • Yz450F
     • Offroad
     • Yamaha
     • Yz450F
   • 53 replies
   • 107k views
   • 
   • lankydoug
   • October 4, 2022

4. Common Threads: Look here 1st! Mods, Maintenance, Common Issues and FAQ's

   By grayracer513, December 18, 2006
   • 1 reply
   • 100.6k views
   • 
   • grayracer513
   • February 21, 2009

5. YZ400/426/450 User Jetting Database

   By grayracer513, September 23, 2008
   • 0 replies
   • 27.5k views
   • 
   • grayracer513
   • September 23, 2008

6. How hot should a 450 get while at idle? 1 2

   By Uns, August 2
   • 21 replies
   • 175 views
   • 
   • Uns
   • August 12

7. Weird issue.. 2015 YZ450F

   By Fat Friar, August 10
   • 1 reply
   • 33 views
   • 
   • mlatour
   • August 11

8. YZ450FX 2017 electric start not working

   By Erick Rodrigo Reynuaba Adaros, April 1, 2019   

   • YZ450FX
   • 2 replies
   • 728 views
   • 
   • wes nickerson
   • August 10

9. Yz450f 2025 con rod issue!

   By MxGringo, August 7
   • 0 replies
   • 50 views
   • 
   • MxGringo
   • August 7

10. 2011 Yz450f wont start after powerwash

    By Joseph Shankin, July 31
    • 3 replies
    • 61 views
    • 
    • Tony Wyp
    • August 2

11. Wheel Interchange: What fits what? 1 2 3 4 10

    By grayracer513, April 16, 2008   

    • Yz450F
    • Yz250F
    • (and 9 more)

      Tagged with:

      • Yz450F
      • Yz250F
      • Yz426F
      • Yz400F
      • Yz250
      • Wr450F
      • Wr250F
      • Wr426F
      • Wr250
      • TiresWheels
      • Wheels
    • 197 replies
    • 168.1k views
    • 
    • m.harristech
    • August 1

12. Lowering Footpeg mounts 06-09 yz450

    By SingleTrack450, July 31
    • 0 replies
    • 41 views
    • 
    • SingleTrack450
    • July 31

13. '06-'09 yz450 gytr flywheel weight

    By SingleTrack450, June 30
    • 9 replies
    • 130 views
    • 
    • SingleTrack450
    • July 30

14. 2017 yz450f no start 1 2

    By Lucasvanlucas, May 14
    • 20 replies
    • 414 views
    • 
    • Lucasvanlucas
    • July 22

15. Water pump leak

    By wes nickerson, July 19
    • 11 replies
    • 359 views
    • 
    • SC_Spode
    • July 21

16. 2017 YZ450FX not charging - new stator

    By WFO Racing, July 3, 2019   

    • elctricalchargingbatterystarterECUregulator
    • 8 replies
    • 1.3k views
    • 
    • GuyGraham
    • July 18

17. Riding without chain adjuster - safe?

    By FlyingDirtrider, May 7, 2011
    • 12 replies
    • 6.4k views
    • 
    • GuyGraham
    • July 18

18. 2017 yz450fx

    By wes nickerson, July 14
    • 2 replies
    • 243 views
    • 
    • wes nickerson
    • July 14

19. 2000 YZ426F

    By Chadwick Chapman, July 14
    • 0 replies
    • 111 views
    • 
    • Chadwick Chapman
    • July 14

20. '09 yz450 hardwire for gps?

    By SingleTrack450, July 13
    • 2 replies
    • 67 views
    • 
    • SingleTrack450
    • July 14

21. Quiet Core Alternatives

    By Smitty965, July 13   

    • Exhaust
    • 426
    • (and 2 more)

      Tagged with:

      • Exhaust
      • 426
      • Yamaha
      • fmf
    • 0 replies
    • 49 views
    • 
    • Smitty965
    • July 13