Will a 200x57mm fit my 2009 FSR in place of the 190x50mm I have?

Offset bushes should solve some of the extra length and overall should steepen up the head tube to offset the 140mm Pikes I have, and raise the BB to prevent crank rock strikes.

2009 Pitch uses the same shock and its nearly the same back end, so i shouldn’t die in a fireball.

The extra travel might mean that the rear wheel contacts the seat tube at full travel so proceed with extreme caution. Only way to check for it is to either ask someone like Tftuned or fit it, let all the air out and compress the back end and see if it hits