Shimano DXR Crank BB help..

[Brandy Truffle]

Going to fit these in my Redline Flight XXL 20" soon. Instructions all good,easy to understand but i'm a little confused about the little black plastic spacer which should or should not be fitted to the chainwheel side of the bracket..

Maybe it's just typical Jap-UK translation losing some detail but i'm not sure if it means the following... 

A:- If the BB Shell is 68mm - FIT THE SPACER.

B:- If the BB Shell is NOT 68mm - FIT THE SPACER.

It just says,check whether the width is 68mm,but doesnt say why.

Simple thing would be for someone who has these fitted on their Redline to let me know how they did it,but any advice welcomed.

It's not quite clear enough for a simpleton like moi. 

[meticulous]

got a set on my 2007 quad, most of been straight forward because i put them on, and i also are a simpleton.
dont they just look fantastic, what a bit of engineering, have you got the new shimano dx platform pedals to go on as well

[se-bmxer]

I have these on my PK Ripper Team when fitting i measured the width of the BB and it was bang on 68mm so i left the spacer off and it
went on fine and have had not trouble

[Brandy Truffle]

Getting the spacer fitment right is essential as if not then the chainwheel and rear sprocket is slightly out of alignment and as has been reported on other forums the chain can skip,jump,come off whatever you want to call it,or at the very least bad wear will occur.

I'm just looking for clarification,Alans is not much help,they just say "we recommend WE fit it"  

[Brandy Truffle]

Thanks Jai - you replied as i was typing above. Will have a look tomor. 

[kuwahero]

I had some on my supercross evo-iS and Alan told me to use the spacer even although the shell was the correct size. never had any probs and the chainline was bang on

marc