SMOOTH, COMFORTABLE, AND EFFICIENT: Sirrus X provides the smoothest ride in its class. Size : M - 5’5” to 5’11” (165cm - 180cm). Pathfinder Sport, 700x42. Bridge Sport, Steel rails, 155/143mm. Forged aluminum arms, 24mm spindle, Narrow-wide steel chainring 40t, chainguard.
eBay