Highly functional Riken Piston Rings fit ProX Brand Pistons. Meticulous product design and advanced manufacturing backed by a strong production system make Riken Piston Rings the top choice for performance and value.

Note: Wiseco Performance Pistons use their own proprietary style piston rings. Please see the Wiseco Piston Ring section for ring replacement on Wiseco Pistons.

Fits The Following Models:

• 1998-2002 Yamaha GP800 Piston Rings
• 2000-2001 Yamaha XL 800 Piston Rings
• 2002-2004 Yamaha XLT 800 20Piston Rings
• 2003-2005 Yamaha GP800R 800 Piston Rings

Pro X Pistons.

2-Stroke Motor.

Standard Size Bore: 79.90mm - 66E-11603-00-00, 66E-11603-01-00

One Kit Does One Piston.

Note: Generic image and may not depict your actual kit.