If I understand correctly, the "89" are shorter than other versions?
If I also understand correctly, I could always use clip ons, but thought I'd give this option a run first.
Any offers, advice, assistance gratefully received.

Cheers.

Hi there,

Check with adidasguy here on GST.
He knows everything you want to know about OEM clip-ons for the GS500.

Good luck,

Trwhouse