Gravity fsx purchased from bikesdirect.com

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1. How heavy is the bike ?Have you been happy with it ?Thanks
2. im 6 feet tall. should i buy the 19 inch size?
3. Thx
4. i got the same bike, how do you lock the rear suspension? mine does not have a lever, and My came with this extra metal piece, don't know what its fore yet
5. TNX FOR POSTING
6. No offense but if you are going to review a bike review how it feels on the trail, I learned absolutely nothing from this review. 
7. can you fit 29in tires on it?
8. The bike is a size medium