2000 426 Clutch help

4 replies to this topic
  • mkporn

Posted January 02, 2006 - 09:03 PM


I have done a couple of searches and all I get is info for the conversion of the 2001 upgrades. Awhile back I came across some info about drilling more lube holes in the clutch hub/basket. Anyone out there remember this and if so could you direct me in the correct direction. Last thing I would like to do to get by buddies bike out of my shop.

Just replaced two gears and the top end and I was looking for the info pertaining to this simple mod....

Hook a brother up. :applause:

  • Pincushion

Posted January 03, 2006 - 08:38 AM


Check out how the Hinson basket has grooves cut into the fingers to allow oil to circulate through the clutch discs.Posted Image

I bought a Performance Engineering clutch basket for my 2000, which I already had done the 01' update for and didnt notice any difference in feel, grip, etc....
At least this one wont groove like the stocker.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted January 03, 2006 - 09:07 AM


The holes in question are drilled in the boss (hub) to more evenly distribute oil from the mainshaft through the plate stack. Looking at the boss from the end, it has five webs running from the center out to the walls. With one of these webs at six o'clock, the holes should be in the spline groove that is nearest to being under the forward facing side (the side that 5 o'clock would be on) next to the base of the web. There should be four holes, about 3/32" in diameter, evenly spaced along the groove of the spline, the outermost being even with the outer end of the web. 4 holes per each web, for a total of 20. The '01 and later bosses should have these already, but I'm not sure if the earlier ones do.

The slots in the Hinson baskets are necessary because the insides of the fingers have a "hollowed out" cross section to make them lighter. If the slots were not there, these would fill with oil that could not otherwise escape. The OEM basket doesn't need them.

  • Pincushion

Posted January 03, 2006 - 09:13 AM


I guess that's why I didnt notice an improved feel when I got a billet basket :applause:
Sorry for the bunk info mkporn. There I go assuming again.

So.... does having a lighter clutch basket allow for a free revving motor? Or is too minute to notice?

  • grayracer513

Posted January 03, 2006 - 09:42 AM


Probably too small for mortal men to notice, although anytime you can reduce the weight of the drive train without giving up any strength, there is a benefit to the bike in terms of reduced load on the drivetrain. Stretched out over the life of the bike, that will show up.

Remember that the clutch turns 2.5-3 times slower than the engine, so weight changes there are not as obvious as in a flywheel.

A new basket, whether billet or OEM will only feel better if the one being replaced was grooved badly enough to cause the clutch to misbehave. Most billet baskets will, however, wear better than the OEM, and shed less aluminum into the oil.

Related Content


Is it worth it? (Cam and High compression piston) by macgi77

Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews

Chubby dad, looking at bikes , First trip to the orange/black forum ! by Slow_ride

Dirt Bike   Make / Model Specific   KTM   250-530 EXC/MXC/SXC/XC-W/XCR-W (4-Strokes)
  • Hot  28 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.