The Altitude is a size-specific frame design that features many details that improve the fit and geometry for each rider.
Rear Center (sometime referred to as Chainstay length)
• The rear triangles are size specific, with the LG and XL sharing the same version. Please see the geometry chart for more details. The rear triangles on the MD, LG, and XL are interchangeable if one wishes to experiment with a different rear center lengths on the above frame sizes.