A SERIOUS upgrade for your Guzzi, offering 22% more piston area and 4-leading pad edges for maximum bite! Bolt spacing is 65mm. Comes with new brake pads ($90 value)! Fits most axial mount Guzzi from '02+ Also available in Chrome ($474.95 per side) - Inquire. If you have the older style (5165 Calipers) with 45mm bolt spacing, adapter are available, see Options: above.