Also called swayback, the spine of a person with lordosis curves significantly inward at the lower back. Kyphosis. Kyphosis is characterized by an abnormally rounded upper back (more than 50 degrees of curvature). Scoliosis. A person with scoliosis has a sideways curve to their spine.
NASCAR Nextel cup race cars are very heavy and have about 750 horsepower. Other specifications include: Busch series race cars are similar to the Nextel cup cars. They have less horsepower due to the carburetor. They also have a shorter wheelbase and spoiler.
FR/DH wheels are your heavy-weight slope tamers. These wheels feature larger internal rim widths of 21mm or more for DH race and 23mm or more for FR wheels. Typically these wheels range from race weights of 1900 grams to well over 2500 grams for those FR huckers.