Probably need a new rear shock, on my ST1100PP and was recommended YSS by a KAIS a local suspension specialist.
Any one experience of these ( link to a different distributor but same product ) http://www.brooksuspension.co.uk/shock-absorbers/yss/honda/honda-st1100-pan-european-yss-shock-absorber-91-98.html
Any one experience of these ( link to a different distributor but same product ) http://www.brooksuspension.co.uk/shock-absorbers/yss/honda/honda-st1100-pan-european-yss-shock-absorber-91-98.html