SP Fork seal question
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Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
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- Settled in member
- Posts: 39
- Joined: Wed Oct 08, 2008 11:04 am
- Bike owned: FZR 400 RR
- Location: Witney, Oxfordshire
SP Fork seal question
I had a set of SP forks rebuilt recently
The seals originaly fitted were 9mm thick and had a 2.2mm washer fitted on top!!
I found out the correct seals should have been 10.5mm thick and fitted these.
The 2.5mm washer was not refitted as it would not go under the clip that holds the seal in place.
My question is should there be a washer at all that fits on top of the seal?
And if so what size should it be?
Logic says it should be around 0.7mm
Thanks for your help
The seals originaly fitted were 9mm thick and had a 2.2mm washer fitted on top!!
I found out the correct seals should have been 10.5mm thick and fitted these.
The 2.5mm washer was not refitted as it would not go under the clip that holds the seal in place.
My question is should there be a washer at all that fits on top of the seal?
And if so what size should it be?
Logic says it should be around 0.7mm

Thanks for your help
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- Settled in member
- Posts: 42
- Joined: Wed Jun 04, 2008 1:47 pm
Re: SP Fork seal question
the washer goes in after the guide, to stop the guide moving up and damaging the seal as the fork is compressed and released. then the seal, then the spring clip, followed by the dust seal. you can use the 9.5 mm seal instead of the 10.5 one but it wont last as long as it does move around slightly over time. the 9.5 seal is meant for the fzr400rr forks really, not sp