This from their website....
Rear Shock Spring Kit
Our progressive rear spring is designed to smoothly transfer engine power to the road whilst controlling the geometry of your machine. This will give you more stability and significantly reduce tyre wear. These springs are not only suitable on the track, but more also on the road. It absorbs irregularities in the roads, and saves you from hitting the bump with passengers at the back or heavy loads.
Rear springs are available in the colors Hyperpro Purple and Black
I've highlighted the relevent bit.
So now we know the colour is not an issue.:thumbup:
I must admit, that in those pictures it does look progressive, but like you say, not as obviously as in most of the photos around the place.
Has it got any numbers on it?
The part number for YAMAHA FZ6 04-09 30MM LOWER is... SP-YA06-SSB023
If not, are these numbers on your invoice/delivery docket/ Con Note?
And if all else fails, I'm thinking I read somewhere they have a satisfaction return thingy?

Try it and see I guess.
Sorry I can't be more help....I don't know a whole lot about them. I was looking at them for a bit before I bought my Penske for the FZ1.
