We have the sleek i-point for a straight black front finish for your street bob The high quality sleeves are made of aluminum, CNC machined and powder coated in gloss black. Two small holes in the back of the chainstays prevent condensation between the chainstay and the fork leg, preventing rust on the surface of the chainstay. Two O-rings ensure a perfect fit between the upper and lower triple clamps Dimensions: length 158.5mm, inner diameter 50mm, outer diameter 55mm for 49 forks Raise the vehicle so that the front wheel just touches the ground. Slide an O-ring over each of the legs up to the lower bridge of the fork. (with "Hole" design sleeves, stick black adhesive film on standpipes if desired) Refit the upper fork bracket.Retighten the steering head bearing adjustment screw.