SCHWINN MESA GS MOUNTAIN BIKE SIZE MEDIUM “SCHWINN MESA GS MOUNTAIN BIKE SIZE MEDIUM, 17″, 21 SPEED, ALUMINUM, FRONT SUSP” has been added to your cart. View cart Sale! SCHWINN MESA GS MOUNTAIN BIKE SIZE MEDIUM, 17″, 21 SPEED, ALUMINUM, FRONT SUSP $590.00 Original price was: $590.00.$420.00Current price is: $420.00. View bike Add to cart