PISTON KIT VERTEX 79.0 A HONDA CRF 250 10-13, VERTEX 23589A OS+2.20 BIG BORE HC COMPR 13,5:1
Vertex Piston Kit 23589A. Bore size 79.00mm, Big Bore +2.20mm [A 78.96mm]. Compression ratio 13.5:1. Kits include piston, rings, wrist pin, and circlips. All pistons are heat treated with a T-5 or T-6 hardening and tempering cycle. Made in Italy. Replacement parts: Rings 590279000001 SET, Pin 715380, Clips 72055. Cross reference numbers: Ring Set, Piston 13011-KRN-A40; Piston (76.8MM) 13101-KRN-A40; Piston Pin (43.6MM) 13111-KRN-A40, 13111-KRN-A60; Piston Pin Clip (16MM) 13112-MEE-000. Weight 259g.
- SKU
- 23589A
- Brand
- Vertex
- Availability
- In Stock (1)
FULL DESCRIPTION
Vertex High Compression Piston Kit
This Vertex piston kit is designed for high-performance engine builds, offering enhanced power and efficiency. Vertex pistons are engineered to meet or exceed Original Equipment Manufacturer (OEM) standards.
Key Features:
- High Compression Ratio: Features a 13.5:1 compression ratio for increased power output.
- Big Bore Size: Includes a 79.00mm bore size, measuring 78.96mm for a precise fit and improved displacement. This is a +2.20mm over standard bore size.
- Complete Kit: Each kit contains the piston, piston rings, wrist pin, and circlips for a comprehensive replacement.
- Durable Construction: All Vertex pistons undergo a T-5 or T-6 hardening and tempering heat treatment cycle for superior durability and longevity.
- OEM Quality: Vertex pistons are fitted as standard equipment on many OEM motorcycles, ensuring top-tier quality and performance.
- Made in Italy: Manufactured in Italy, known for its precision engineering and high-quality standards in engine components.
Replacement Parts:
Replacement components are available separately for continued maintenance and performance:
- Piston Rings (Part No. 590279000001 SET)
- Wrist Pin (Part No. 715380)
- Circlips (Part No. 72055)


