| My old ST2 has a Gel saddle replacement labelled "Viper".
Don't know if they still make them to order, but it is a good improvement over the standard (and looks exactly the same). It may be a case of them re-working the old seat carcass.
I don't think you'll see too many things like this coming up for sale these days. The ST is too old now and there were too few sold for manufacturers to bother offering anything much. Most parts come up on
e-bay when they are being broken for bits. | 
11-Mar-2015, 06:57 
Hybrid Mode
