Wrist Pin question Stock Vs. Aftermarket


2 replies to this topic
  • HONDA NO MORE

Posted July 24, 2016 - 05:57 PM

#1

Hey guys,

 

Have an 2008 YZ450, I am in the motor doing some stuff and noticed that the wrist pin has some scuffing on it.  The piston is fairly new still from the previous owner so i just want to replace the wrist pin.  I know the piston is aftermarket due to the retaining rings that hold the wrist pin in place vs. the circlips use on the stock piston.  It does look like to be a high compression piston as well.

 

My question is, will a stock wrist pin fit an aftermarket piston??

Obviously the diameter should work, but what about length and wall thickness??

 

Just want to get something ordered and get it put back together.

 

Thanks,



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

Posted July 25, 2016 - 05:02 AM

#2

It may or may not. It could be a different length plus you still need cir clips from the aftermarket piston. If it's apart you also need new rings. So you should just put a new piston kit in it or stock parts and be done.


Edited by stevethe, July 25, 2016 - 05:12 AM.


  • grayracer513

Posted July 25, 2016 - 08:18 AM

#3

The bore size of the pin shouldn't be a question, but as mentioned, the length may be.  You don't want an excessive amount of float between the clips or the pin may batter them out.  Matching the new clips to those that properly belong in the piston is very important to retaining them in the piston as well.  "square" cross section clips in grooves cut for round wire, or vice-versa, is a ticket to a train wreck.







Related Content

Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
Forums
Photo

The "going back to the other darkside" adventure... by Monk


Dirt Bike   Make / Model Specific   KTM   250/350/450/505 SX-F & XC-F (4-Strokes)
  • Hot  113 replies
Reviews

Yamaha YZ450F 2017 by Chris.GVS


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

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies
Forums
Photo

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
 
x

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.