OEM are £90+ so I'm thinking maybe Hiflo @ £39 Sportsbikeshop. Anybody tried washable filters ? What do the RR7 track guys recommend ?
Used to have BMC in my RR7. You can service clean and re-oil them, but TBH I will now just stick with OEM as I don't need to wring the last bhp from a bike.
I saw the state of my filters on the first 4k service of my 04 which convinced me to have K&N filters fitted. They were cleaned and re-oiled every 4k when I did an oil change, up to the time I sold the bike at 52k miles.