The XD600 crank is Sugino's absolute top-of-the-line XD triple. It's beautifully polished and anodized, and has all-aluminum rings with the latest shifting aids. The arms are cold-forged. The BCD is 110/74 and it comes with 46/36/26 rings. We recommend a 113mm bottom bracket for this crank if used on a road bike, but bikes made for wide tires, such as loaded touring bikes or mountain bikes, might need a 115mm BB. SXD6$105.00Length: 165170175 All images and text copyright Velo Orange, LLC 2006, 2007, 2008