SBT's sleeves are an economical solution for repairing cylinder blocks back to OEM specifications.
SBT’s jet ski sleeves are made of a proprietary cast iron alloy and are centrifically-cast.
Cast iron cylinder sleeve, must be bored and honed to finished size. 1990 Super Jet 650
1991 Super Jet 650
1992 Super Jet
1992 Wave Runner III
1992 Wave Runner LX
1993 Super Jet 650
1997 Super Jet 650