This babe's only 3 weeks old and sounds sad to give it away already, but it doesn't fit my lifestyle as I'm not a very fit teenager who would do well on a proper mountain bike trail. Both rear and front suspension work properly, nice and cushy and can be easily changed to your preferences. It's from trek so it's got history. The body frame is made of aluminum. Fairly light. Very strong. Comes with free Bontrager water bottle holder and speedometer. The tires are from the same brand. This beast is the master of the hills. I can say this as a guy with poor stamina because the gears on this bike are so responsive that I practically glided up the a hill like Holland Hill. Discounted $3000 from the original price so please enjoy!