suzuki/pe fork caps

[mainline]

I've used PE fork caps (36mm) on my yz forks to replace some rooted original ones. Does anyone know if the bigger diameter caps (38mm) will also swap over onto 38mm yz forks?

And are the 82 pe175 forks 38mm?

cheers

[Davey Crocket]

Yamaha, Suzuki and Kawasaki all used KYB (Kayaba) forks Paul so I wouldnt be surprised if lots of bits could be swapped over and I think the PE's ran 36mm forks all the way through...could be wrong though...I was once.

[mainline]

cool, thought so, found some o/s and just wanted to check before buying them. cheers

[brent j]

I use 82-83 PE175 forks on my XT500 and they are 38mm. You just need to check as the thread is a different depth into the fork leg on different models and brands and the caps are different legths.
The thread is the same but from memory the PE caps don’t go deep enough to fully engage the thread in Yamaha forks and Yamaha caps won’t fully screw into PE forks.

Something like that anyway.

[lukeb1961]

as a rule-of-thumb:
RM's up to C were 36mm. N-onward were 38mm. E-onward were 43mm.
PE's were all 36mm except for 175Z/D/E which were 38mm.

[LWC82PE]

The YZ-C fork caps and most XT/TT500 for caps interchange with the 77-82 PE forks (not 82 175 though). On some of the yamaha ones and early PE ones the thread/o-ring areas are different heights like Brent said but theres usually enough for them to work. Ive mixed and matched all sorts of caps around. Basically there are at least 2 yamaha 36mm type caps and 2 suzuki ones and they have the same threads but a bit different in lengths. You have to watch out for the early 80's 36mm IT forks as they are a different thread pitch though. Im not sure what the 82-84 PE 175 caps are but i would assume they will interhcange with some 38mm caps off a Yamaha aswell.

Ok ive just remembered what the thread issue is. You cant really use 78/79 PE, SP, DR-S or TS250 fork caps on the 80-82 PE forks but you can swap them the otherway around and use 80-82 36mm caps on the 78/79 PE, SP, DR-S and TS250 forks (although there is the  height issue, so im more talking about aftermarket ones or if you were using different triples)