Air shock info


Information and questions on GL1500 Goldwings (1988-2000)
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Solo So Long
Posts: 399
Joined: Thu Mar 26, 2020 4:07 pm
Location: Northern Nevada
Motorcycle: 1999 GL1500 50th Anniversary SE
1989 GL1500 FOR SALE
A pack of Super Cubs
Formerly (in order):
Honda Super Cub (bought 1968, sold ?)
Kawasaki Coyote (early 1970s)
Honda 350 (mid 1970s)
Kawasaki KZ900-PS (1977)
Honda Super Cubs (various years)
Kawasaki KZ1000C (1978)
Kawasaki KZ1000P (various years, 1980 - 2005)
Honda 360 (1983)
BMW R1150RT-P (2001)
BMW R1200RT-P (various years 2007 - 2018, NEVER AGAIN)

Air shock info

Post by Solo So Long »



To follow up on my thread asking about substitute air shocks, I have some info for the next guy with the problem.

The shock is a Showa MN5-003 ("Double-Oh Three, licensed to leak!")

Honda part number is 52500-MN5-003

Eye diameters: Top 16mm rubber (for lug), Bottom 14mm w/metal sleeve (for bolt)
Eye-to-eye: Max 13-1/2, Min 10-3/8
Air shock oil seal (55X68X13): 91257-KE8-00
Takes 4.7 ounces of ATF (Honda Shock Oil SS7 will work too).

The shock was holding the 40 psi I put into it the other day, but there was some fresh drip, so I pulled the saddlebox and wormed the shock out from under the subframe. Taking a good look, yep, it's leaking, but I see no actual damage, so I'm going to try some ATF-friendly seal swoller-upper, and if that doesn't work, then I'll give replacing the seal a shot.


Solo So Long
Posts: 399
Joined: Thu Mar 26, 2020 4:07 pm
Location: Northern Nevada
Motorcycle: 1999 GL1500 50th Anniversary SE
1989 GL1500 FOR SALE
A pack of Super Cubs
Formerly (in order):
Honda Super Cub (bought 1968, sold ?)
Kawasaki Coyote (early 1970s)
Honda 350 (mid 1970s)
Kawasaki KZ900-PS (1977)
Honda Super Cubs (various years)
Kawasaki KZ1000C (1978)
Kawasaki KZ1000P (various years, 1980 - 2005)
Honda 360 (1983)
BMW R1150RT-P (2001)
BMW R1200RT-P (various years 2007 - 2018, NEVER AGAIN)

Re: Air shock info

Post by Solo So Long »

Current status:

I put in some ATF swoller-upper and refitted the shock.

It's holding pressure fine, but I haven't been on the road with it yet.
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