Sure, I ordered from here: http://www.demon-tweeks.co.uk/motorcycle/rear-springs
The spring I went for:
Free length - 6.0 inch / 152.4mm
Internal Diameter - 2.25 inches / 58.5mm
Rate - 650lbs ins / 114N/mm
Bear in mind that this spring is half an inch shorter than the original Yam spring; I had an alloy spacer made up to take up the gap. You might be able to fit the 7 inch version of the spring instead, but there may be too much preload by the time its compressed onto the shock. I have a contact who's a dab hand at machining parts & can knock up an identical spacer for about £20 if you need one.
A decent 20 mile spin this morning and all is (very) well now. Much firmer rear end, with 31mm probably at the sporty end of the adjustment range. I'll back the preload ramp off a couple of positions for slightly more comfort, but finally the quest for rear-end perfection is coming to an end .... matching the front-end perfection of Debrix emulators with VFR750 fork springs
The spring I went for:
Free length - 6.0 inch / 152.4mm
Internal Diameter - 2.25 inches / 58.5mm
Rate - 650lbs ins / 114N/mm
Bear in mind that this spring is half an inch shorter than the original Yam spring; I had an alloy spacer made up to take up the gap. You might be able to fit the 7 inch version of the spring instead, but there may be too much preload by the time its compressed onto the shock. I have a contact who's a dab hand at machining parts & can knock up an identical spacer for about £20 if you need one.
A decent 20 mile spin this morning and all is (very) well now. Much firmer rear end, with 31mm probably at the sporty end of the adjustment range. I'll back the preload ramp off a couple of positions for slightly more comfort, but finally the quest for rear-end perfection is coming to an end .... matching the front-end perfection of Debrix emulators with VFR750 fork springs