gearbox ratio's

5 replies to this topic
  • Taffy

Posted June 22, 2000 - 02:13 PM


can anyone post the new ratio's for the 00 YZ426? is it higher for a CR box or did they drop the first couple of gears for the drag starts? do yamaha have gears from the other models that fit? i'm told the WR has a taller fourth & fifth.

  • Clark_Mason

Posted June 22, 2000 - 04:35 PM


99WR400 vs 98 or 99YZ

1st 29/12
2nd 26/15
3rd 21/16
4th 21/20
5th 21/25

98 or 99 YZ
1st 27/14
2nd 25/16
3rd 23/18
4th 24/22
5th 20/21

Which means the WR 1st gear is 25% lower, 2nd gear is 13% lower, 3rd gear is 2.67% lower, 4th gear is 3.74% taller and 5th is 11.8% taller.

I know the 426 1st and 2nd are even taller than the YZ 400 which makes the bike basically useless on tight snotty trails. This was proven out by a guy I know who tried to ride one on hard ways on the last Dual Dogs Dual Sport ride, he was swearing all day a frying his clutch.


  • YZFWrench

Posted June 22, 2000 - 04:52 PM


Hummm- I ride my 426 on tight, nasty single track with stock gearing about 85% of the time with no problems, but I hardly ever use the clutch- at least not like I did on my old RMX250.

'00 YZ426

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Clark_Mason

Posted June 22, 2000 - 05:20 PM


You must be a excellent and very talented rider. I myself had trouble on this ride on my 99WR something about hairpin switch backs with 2 to 3 foot rock steps complacated by snow but whaterver. My WR on several occasions was making coffie perculating sounds in the radiator overflow due to ultra slow speeds, very tricky single track trail obsticles while climbing from 4000 to 9500 feet. Anyway the guy on the 426 with stock gearing was not having fun.


  • holeshot

Posted June 23, 2000 - 05:37 AM


The '00 426 has higher (steeper) 1st and 2nd gears than the 98 and 99 YZF. I'm sure the ratios are listed in the manual, but I don't have it handy.

  • Taffy

Posted June 23, 2000 - 02:50 PM


i know i'm in the wrong yard to talk of this one but we're here now so what the...!

My Wr is used for Enduro's & trail riding in gloop at 20 mph. pictures of Moab make me laugh (& cry!)all that space!

i don't want to go through all that gearing stuff again but just to say i run 13/48 for racing & change the front to a 15 for a trail ride, after all we have to get there on our piddly little roads in England.

i think the box is great in the first three-which is just about all you would use on a typical Enduro. fourth could be taller & fifth taller still for better roadwork. with so many bikes, gearbox bits & more can be swapped. i'm betting that the gear ratio's from something out there would suit.

Related Content


Wilson the Blue Privateer by jetfuel

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies

Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • * * * * *
  • 1 review
  • Last review by Tommyk_55
  • On January 15, 2017

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

Megabomb Fitment by 288yz450

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.