PISTON KIT VERTEX 89.0 A HC KTM EXC/XC 450 03-11, VERTEX 23340A BETA RR450 HC COMPR 12,0:1
Vertex UK piston kit 23340A HC Compr 12.0:1. All Vertex Pistons 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 sold individually. Made in Italy. Fitted in many OEM bikes as standard. Bore size: 89.00mm [A 88.94mm]. Replacement parts: Rings 590289000001, Pin 715108, Clips 72075. Cross reference numbers: Piston Pin Bolt 20X15,8/12X50 59030033000, Circlip C20x1,5 59030074000, Piston Cpl. 450 D=89Mm Si.1 03 59430007000 I, Piston Cpl. 450 D=89Mm Si.2 03 59430007000 II, Oil Scraper Ring 89/81,5X3 59530031000, Rectangular Ring 89Mm 57530032000. Weight 544g.
- SKU
- 23340A
- Brand
- Vertex
- Availability
- In Stock (1)
FULL DESCRIPTION
Vertex High Compression Piston Kit
This Vertex piston kit is designed for high-performance applications, offering a 12.0:1 compression ratio for increased power output. Vertex pistons are manufactured in Italy and are fitted as standard equipment on many original motorcycles.
Each kit contains all the necessary components for a complete installation:
- Piston
- Piston Rings
- Wrist Pin
- Circlips
All Vertex pistons undergo a T-5 or T-6 hardening and tempering cycle for exceptional durability and heat resistance. Replacement rings are available separately.
Specifications:
- Bore Size: 89.00mm (Actual measurement: 88.94mm)
- Compression Ratio: 12.0:1
Key Features:
- OEM replacement quality
- Includes piston, rings, wrist pin, and circlips
- Heat treated for superior strength and longevity
- Made in Italy
- High compression ratio for enhanced performance


