No idea what happened to my thread but I will try again. So, I'm looking to get a Speedmaster and have the option of either the 790cc or the 865cc. I know the technical numbers between the two sizes in terms of HP and torque but does one know how the two differ when ridden back to back? The reason for asking is that on price here in Finland the two bikes are quite different; this is the bike I'm interested in, Triumph Speedmaster 800 cm³ 2005 - Helsinki - Motorcycle - Nettimoto Would having straight-through pipes open-up the engine and release more power? I was thinking also that a K&N filter would do similar. Cheers for any advice!