I have a 880 kit on the bench (from an unhappy customer)...ZERO/NONE/ZIPPO porting (raising the roof of exhaust between the guillitine and bore AFTER chrome process isnt porting) and chamfering the exhaust edge of the piston is???
IMHO- I trail port the STOCK 800R and get 5 hp...I will beg to differ with anyone, extensive porting (8 hours worth per SHR860R and its NOT done by a 13 year old with a dremmel) is required on a BB that makes good power, having the best head design helps too...BJ
BTW- I DOO have 2 port specs...MXZ and Summit...and soon to have "twin pipes only" specs...
Rember what happened last time you starting making statements about what hp can be made with an 800 that bondi ported 800 a few years back almost made you eat your shorts at haydays I think it was .5 or 1hp off the 160 mark you said was impossible. The new 800R is working just as well with his porting/airbox and head and its a heck of alot more then 5 hp gain.