Originally Posted by Evenflo76
So what would the cost be of adding a set of aftermarket forks and a 19 or 21" tire up front?
If talking about new parts, probably cost you a few thousand dollars altogether.
And do you mean, that by doing only this, the bike would convert itself into an off-road machine? No it wouldn´t.
Plus it ain´t so simple, that you just go out to buy some forks and wheels different to original, fit them, and achieve the desired result. While it may be technically possible to do such modifications, you really need to know, what you´re doing, when messing around with things like wheel sizes. For example, changing 17 inch -> 19 inch will alter the bike´s steering geometry.