GPR dampers are awesome,had 1 on my blade,and got 1 on my zx10,also had 1 on my 636.never had an issue with any of them,the zx10 has been on there nearly 10 yrs.
Only mike Edwards in thd uk to service them. It's ariund 50 wuid. Always worth doing s couple of times a year if used often . I always fit them to my bikes . They may not be best looking but they are by the easiest to adjust on the move. Stsndard elec one is very good tho. I've just bought one off Yorkshire Gooner to go in my Spares box. If you fit one to your blade keep an eye on the alloy brackets IT sits on as the do crack. Mine were shafted on the left.. Im always dubious about buying Ohlins dampers as the ones with 120 mm stroke come as stsndard on zx10 etc but they aren't factory issue so be ware! Gpr is the best id say. Rare as rocking horse shit second hand for the blade