PISTON KIT VERTEX 66.4 D YAMAHA YZ/WR 250 99-22 RACE, VERTEX 22591D SINGLE RING
VERTEX PISTON KIT 22591D. Standard pistons and components are OEM replacements. Kits include piston, rings, wrist pin, and circlips. All pistons are heat treated with a T-5 or T-6 hardening and tempering cycle. Replacement rings are sold individually. Made in Italy. Fitted in many OEM bikes as STD. Bore size: 66.40mm [D 66.38mm]. Replacement Parts: Rings 53010006640, Pin 715372, Clips 72074. Cross reference numbers ONLY. Piston (Std) UR RED 1P8-11631-00-A0, Piston (Std) UR ORANGE 1P8-11631-00-B0, Piston (Std) UR PURPLE 1P8-11631-00-D0, Piston (Std) UR GREEN 1P8-11631-00-C0, Piston Ring Set (Std) 5CU-11603-10-00, Pin, Piston 5UP-11633-00-00, Circlip 93450-19052-00.
- SKU
- 22591D
- Brand
- Vertex
- Availability
- In Stock (1)
FULL DESCRIPTION
Vertex Piston Kit - Single Ring
Enhance your engine's performance with this high-quality Vertex Piston Kit. Designed as a direct OEM replacement, this kit ensures your engine runs smoothly and efficiently.
Key Features:
- Complete Kit: Includes piston, rings, wrist pin, and circlips for a full replacement.
- Heat Treated: All pistons undergo a T-5 or T-6 hardening and tempering cycle for increased durability and performance.
- High-Quality Materials: Made in Italy, adhering to strict manufacturing standards.
- OEM Fitment: Standard pistons and components are designed to match Original Equipment Manufacturer specifications.
- Single Ring Design: Features a single ring for optimal compression and performance.
- Precision Bore Size: Bore size measures 66.40mm (with a D measurement of 66.38mm).
Replacement parts, including rings, pins, and clips, are available separately to maintain your engine's peak condition.


