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1989 YZ 250
This page is intended to be a notepad area where I can track the changes to this bike. I have found that there is little information out there and very few people in the shops have ever even seen a 89 yz. I bought the bike in 2006 and have fallen in love with it. It is in great condition and for now it is all the bike I need. |
| Stock Shim Stack Rear Shock 155 lb rider, stock spring 5.2 kg/mm | |
| RaceTech Shim Stack Rear Shock 200 lb rider, 5.6 kg/mm spring | |
| Reed Valve Boyesen RAD-34A Reed Valve | |
| Front Spring Replacement Installing springs for a 200 lb rider | |
| Boyesen Boost Ports Porting the 89 yz250 for Boyesen reeds | |
| Calculate Spring Rate Fork and Shock spring rate calculator | |
| 2001 forks conversion Install 2001 forks on a 89 YZ250 |