Buy SB150 T3 | Buy SB150 T3 Online | SB150 T3 For Sale   “Race bred”. It’s not just a slogan printed on the SB150 top tube. We’ve been pinning on numbers and pinning the throttle since 1985. GEOMETRY Geometry Chart: SIZE SMALL MEDIUM LARGE X-LARGE A SEAT TUBE LENGTH (mm) 380 410 450 495…