No spacers or reducers here this BB fits directly into your BBRight frame and the Shimano crank direct into the BB
- PresFit 4630Lfor BBRight frames. Left and right 7075-T6 aluminum bottom bracket cups, stainless bearings
I bough a Cervelo S5 and this BB was excellent for using the Shimano Ultegra crankset. It was easy to install, comes with instructions just in case, works perfectly. I totally recommend.