I mounted the suspension of the DL1000 2002-2008 on my DL650 of 2018, and I just come to say works perfectly.
The operation of the front forks was sublime and very balanced in conjunction with the rear suspension.
I don't understand why the bike doesn't come with that configuration. Just add another € 300 to the final price and place the "DAMPER ROD" inside the front forks.
The bike brakes better (no more deep dive), the suspension makes a good reading of the road, even in the most accentuated broken roads ... the suspension travel rise from 15cm to 16cm. Now I got a 16/16 back / front travel.
Materials used
Complete suspension of a used DL1000,
From the 650 I only use the "Tube outer R" and "Tube outer L" which is perfectly compatible with the suspension parts of the DL1000 from 2007-2008.
Suspension oil: Motul factory line 7.5W
With the tubes of DL1000 mounted, the suspension is 1.4cm longer, for me is just perfect, to the shorter people can safely leave 10mm above T to maintein original higth .
SAG 42mm
Suzuki I give you my DL650 for test drive :D
Total cost 600 €
DL1000 fork