FLIGHTLINE SPORT
For about $70 more, you get:	Benefits of upgrades:
Suntour XCM 100mm suspension fork with lockout/preload adjust	25mm more travel, lockout function makes climbing a breeze. 30mm stanchions for added leg stiffness.
Double-butted downtube frame	Added frame material on the interior ends of the tubing; provides added strength over non-butted tubes.
Tektro IO mechanical disc brakes front and rear	Disc brakes provide better stopping power. They also give better wheel clearance in muddy conditions.
Shimano Alivio rear derailleur	Lighter weight, streamlined design. Dual link bushings for smoother performance and better shifting.
Kenda Klaw 2.1 tires	More aggressive knob pattern for improved traction
Pivit aluminum riser bar	Aluminum=less weight