ASV are a common choice, but be careful when buying on line as there are a lot of poor quality copies about. Check what other members have as they are a regular sale item on here https://www.1000rr.co.uk/threads/asv-brake-and-clutch-lever.42461/
+1 for TWM, give BDS a shout excellent service! Levers are far more superior in quality and cheaper than ASV
I got Twm after Raphael recommended them and they're great. Prefer them to all the other ones I've had including asv I've dropped it twice as well since they've been on and they stood up to it better than other folding levers I've had.
I had the long ASV levers on my RR9. They where good. However the last two bikes I have had the MT10 and now the TV4F I have fitted folding levers by Evotech. Really happy with them.