Headstock Bearings: BMW G650 X Challenge (2007) Aprilia The top bearing sized ID25

The top bearing sized ID25 x OD47 x WTH15 and bottom bearing sized ID30x OD55 x WTH17

BMW S 1000 RR (2008-2014)

All sizes set out ID x OD x Thickness

Bottom bearing: 30mm x 55mm x 17mm

Suzuki GSR400 (2006)

Headstock Bearings: BMW G650 X Challenge (2007) Aprilia The top bearing sized ID25Brand new set of head stock steering bearings to fit: BMW G 650 X Challenge (2007). This set of steering stem bearings is designed to replace the original set of bearings on a G650 X Challenge for the years and models shown above. Top and bottom headstock bearings are included. Top bearing: 28mm x 52mm x 16mm. Bottom bearing: 28mm x 52mm x 16mm. Sizes are ID x OD x Depth. If you require different sizes please click here to see our full list of sizes.