Vintage Dirt Bike Q & A
https://vintagedirtbikeforums.alp-sys.com/

1980 CR250R fork diameter ??
https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=1944		 Page 1 of 1
Author:  boatfixer27 [ Thu Jul 17, 2008 9:27 pm ]
Post subject:  1980 CR250R fork diameter ??
The fork tube diameter on mine is 38 mm with straight tubes, I thought stock was 37mm with the indentations at the top between the triple clamps. My bike was mfg'd 1/1980, it seems odd since I thought the upgrade usually was to 41's from an 81 or 43's from an 83.
Author:  dogger315 [ Fri Jul 18, 2008 9:39 am ]
Post subject:  Re: 1980 CR250R fork diameter ??
You are right about the stock fork diameter. The 78 -80 CRs used the same '430' top triple clamp that fit
a 37mm upper fork tube. The straight (no indention) larger upper fork tube didn't show up until 81.

I don't know why your bike has 38s. The CR450 used the same forks and bridge as the 250 so I don't
know off hand what bike (if any) originally used that size. Maybe you're in posession of a rare set of
"works" forks :lol:

dogger
Author:  boatfixer27 [ Tue Sep 02, 2008 7:31 pm ]
Post subject:  Re: 1980 CR250R fork diameter ??
I finally figured out what forks I have on this bike after trying to track down a replacement damper rod bolt which was a 12 mm x 1.25 pitch (extra fine metric), and the only forks that had this were Showa 38 mm's from a 1981 CR125. I still don't know where my triple trees came from since the handlebars have a rubber mount usually found on enduro / dual purpose bikes.
Author:  FTE [ Tue Sep 02, 2008 7:33 pm ]
Post subject:  Re: 1980 CR250R fork diameter ??
Maybe from an XR?
Author:  boatfixer27 [ Mon Sep 15, 2008 7:43 pm ]
Post subject:  Re: 1980 CR250R fork diameter ??
Does someone know the fork oil level / height or volume required to fill these forks (81 CR125)?
Many thanks, this forum helps fuel my addiction (6 CR250's and 8 others)
Page 1 of 1 All times are UTC - 7 hours [ DST ]
Powered by phpBB® Forum Software © phpBB Group
https://www.phpbb.com/