Product Jet SkiPiston Back 12110-98E51 Piston-1.0For Tiger Shark 640 Item Number: 12110-98E51 Description: Piston-1.0 You May Also Be Interested In 13001-3714-04 Piston-1.0 For Kawasaki 650 12110-91B61 Piston-STD For Tiger Shark 1000 90201-136P4 Washer For Yamaha 3KJ-3YK 09-965 Piston Kit