Aluminium Engine Kit Suzuki GSXR1000 K3-K4. Titanium Engine Kit Suzuki GSXR1000 K1-K2 Gold 2001-2002. Pro-Bolt Aluminium Engine Kit. Our Aluminium Engine Kits include all the bolts required to replace the fasteners in the side engine casings, covering (where applicable): clutch covers, water pump housing, alternator cover, and sprocket covers.