Merida big nine

Bassen74
Bassen74 Posts: 4
edited July 2012 in MTB buying advice
Hi
I´m going to buy Merida big nine, I can´t find a sizing guide to the bike. I´m a 183 cm high. Inseam 86 cm.
Anyone that knows where i can find the sizing guide, or has experience with Merida big nine bike?
Is it 19 or 21" that will fit me?