Hey folks. Anyone have a rear shock 190x51mm? The Kona Fastrax AF2 on my 2010 Kona Tanuki finally went. Thanks 
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In case it helps you out with your search, this size is also known as 7.875 x 2.0.
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Thanks for this! The lockout at least still works
Not sure why I didn’t call by local bike shop first (or actually measure it myself LOL) but the rear shock is actually 190mm (eye to eye) x 51mm (travel) or 7.5" x 2". (NOT 200mm x 50mm as I originally posted) My bad! If anyone has one, please let me know
Must be a 2011(?), 2012 and 2013 used the larger 200x57mm according to my Kona Tech spreadsheet. I think I have one of the short rear shocks from a Tanuki frame here (new pull off FOX RP-something or other) but I don’t recall what year Tanuki it came off of. I’ll have a dig through my pile of stuff and see if it’s the short or long version.
EDIT- I was able to put my hands on it pretty quick but it is the longer version used on the 2012 and 2013. Sorry!
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Hi gtrguy! Found my old receipt LOL. I did a google search below on my serial #
- Manufacturing Year: The first character “H” indicates it was manufactured in 2011 (or potentially early 2012 for the 2012 model year).
- Manufacturing Month: The second character “1” indicates January.
- Factory/Model Series: The “HM” generally refers to a specific factory or model line for Kona’s aluminum frames during that era (often produced by Hodaka).
Context for this Serial Number:
This serial number corresponds to the early production run of the Kona Tanuki, which was introduced as a popular, budget-friendly “All Mountain” full-suspension bike (often 26-inch wheels, 130mm travel).
Cyclesmith told me it was 190mmx51mm. Thanks for checking though. Appreciate that.
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Well I took the plunge to try and service the Kona shock. It was stubborn as hell to get the air can off but finally was able to remove it after a couple of attempts. I did scratch up the can as it took some force to get it off. Not a lot of seals and dust wipers in there but bought a Fox Float kit to see if I could use any of those parts. Unfortunately I didn’t find any that exactly matched the internal ones (some were very close just a little smaller) so I just cleaned everything up really well, removed and lubed up the old seals and rings with Slick honey and added a small amount of Fox float fluid into the can. I tested on a quick ride and all seams ok but still feels a little mushy even at 150 PSI. I’ll try adding more air when I get a chance and test again. I’ll keep the shock locked out but there is still a little play. In the meantime I’ll still be on the lookout for a replacement.
Sr suntour has some that size for a fairly decent price, 200$ ish
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Ah thx. Honestly was looking for something less expensive in price but half decent quality. I’ve never owned anything Suntour so maybe quality is better now??
As mentioned, that shock would have been made for Kona most likely by SR Suntour. There is a very high chance that it has lost its nitrogen charge over the past 16 years which would explain it being squishy. That shock would be nitrogen charged to 350-500psi, so I don’t recommend opening that up unless you have experience. I can rebuild it and probably have part in stock, but if you were hoping to buy a replacement shock for less than $200 a damper rebuild is probably of not interest as that too is around $200 parts and labour.
And just a PSA, but riding it locked out on anything more than pavement or gravel will end up causing issues. If you are trail riding it and the lockout plate keeps getting hammered by the oil something will eventually fail, and that won’t be repairable on that shock.
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Hi Andrew. Thanks for your reply and info on my Kona shock including your rebuild cost\services. I’m going to keep looking on the used market for possibly a Fox float air shock since I have a seal kit.
The tanuki is now my year round commuter bike since I added a mid mount motor 4yr ago. No trails for this bike but I do like full suspension (even though not necessary) to take the edge off curbs and potholes 
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