Stainless Steel Engine Kit ZZR1400 A6F-A7F-D8F-D9F 06+ All the bolts to replace originals on side engine casings including clutch covers, water pump housing, alternator cover and sprocket covers where applicable. NB; One bolt on this engine casing will not be replaced with this kit. This is located on the clutch slave cover and is M6 x 115mm. This is not a size Pro-Bolt supplies. Kits are easy to use - remove one bolt at a time, and replace with an identical length Pro-Bolt! Primarily M6 threads with a 5mm Allen key drive, 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 the best part is they will never rust - just fit and forget! With exotic tapered heads this product will really make your bike stand out from the crowd. Also included in the kit are pro-lube, and relevant Allen keys.