what size?

[440z17]

what size bore would an R need to beat modded banshees in sand drags?

[methyman]

Its not so much a bore size, its the porting, pipe, carb with rider skills.

[wilkin250r]

Define "modded"

[ground_zero298]

sprokets also

[250r4life]

246cc stock motor (if well taken care of) with rad valve, pipe, and filter... i'd beat comparably modded banshees up the hill all day long... theyd get me on flat ground though