SS109 wrote: ↑08:44 am Aug 20 2022 Yeah, XR400 is what my suspension guy said. For the record, I do have my forks slid up in the clamps by about 30mm IIRC. At 150lbs I would be running either .38/4.8 or .40/5.0 on fork/shock springs. I only went with .40's on the KDX forks because of having them slid up in the clamps so much but stuck with a 4.8 on the rear. BTW, I'm 140lbs.
@SS109, your initial mentions about the clevis swap said that it was a DRZ400 clevis, but every one after that from my searches, you said XR400.
I found a guy selling XR400 suspension, & he sent me a video with all sorts of measurements when I asked him for the clevis inside width. The XR400 was like 28.2mm inside width approximately (KDX is 22.7mm or so, RM has to be very similar), and a completely different shaft mounting type versus the RM and DRZ shock clevis.
I noticed browsing eBay that the DRZ400 clevis look nearly identical in every way to the RM clevis, and the XR400 was a completely different style.
From what I'm reading, the XR400 was relatively unchanged for its entire history 1996-2004 I believe. All the XR400 shocks on eBay have the same type of clevis and appear the same dimensions, and are all exorbitantly priced and not a parts shock price, all $300-$400!
DRZ400 seem to be more plentiful and available for cheaper. I know the engines were the same 1999 through 2020 or present on the DRZ400, also sold as a Kawasaki KLX 400 for a brief few years when Kawasaki and Suzuki were rebadging each other's models to save on production costs.
I'll review your photos again but I think maybe that first mention of it being a DRZ clevis was more correct, although it didn't look much shorter in length than the stock RM clevis.
I'll have an '03 RM125 here in the mail by Monday at the latest to compare. My buddy has a DRZ400 with a bad engine, I can go down to his farm sometime and check his out before buying cheapest DRZ shock on eBay.