Aluminium Engine Kit KTM 125 SX. Aluminium Engine Kit KTM 65 SX Race Spec EOKTM50HXRE Black | Pro-Bolt. 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.
