Stainless Steel Engine Kit CBR600RR 07-10 All the bolts to replace originals on side engine casings including clutch covers, water pump housing, alternator cover and sprocket covers where applicable. Kits are easy to use - remove one bolt at a time, and replace with an identical length Pro-Bolt! This Flanged Hex Head Kit contains primarily M6 diameter threads with M8 Socket. Our bolts are made from 316 Stainless Steel which can be torqued to manufacturers? original settings. They are polished to a high mirror finish and benefit from the fact they will never rust so you can fit and forget. The unique dished and flanged head style of these bolts look stunning when fitted. Also included in the kit are Pro-lube and stickers.