Can anybody tell me the availability of a quick action throttle for my F3 track bike please.

 

is this the sort of thing your looking for
Honda CBR600F 1987-2013 Domino Gold Quick Action Throttle KRR03 & Cables

 

There is a cheaper route, the R6 throttle tube. I put a Motion Pro R6 throttle tube on my 94 CBR 600 F2, I think it cost less than $15 from Dennis Kirk. I also put newer at the time 07,08 or 09 R6 throttle tube on my 08 CBR 1000rr that I ordered from the local Yamaha dealership. I think it was $25 give or take and even came with the grip on it already. Both required some modifications to work/fit. The Motion Pro is 1/4 turn, I think, & the genuine Yamaha part is 1/6 turn.

 

The genuine Yamaha part # is 2C0-26240-00-00 which is 06+ R6. The Motion Pro is one size fits all R1 R6 FZ etc etc and not as "quick turn" as the OEM 2C0-26240-00-00 which is 1/6.