I never seen the imperial but the BRN and all moped cylinders need a port map done by me..joshing. LOL really if you straighten the ports in any cylinder always a good mod.
I have ran about 4 of these kit brn hidro euro always need the ports adjusted.
Good oils, means the good shit not 5 bucks a bottle 10 and up price. The kits last about 3 years the way I drive them, btw I beat the living shit out of them couple people might be able to back me up on that. I think the pistons could use some modding by add dimples in the piston walls, rounds the sharp corners...
Really buy then say something people, BRN does have A+ craftsmanship. You just have to mod a couples things sometimes.
Yea the polini is nice and top of the line.