PISTON KIT VERTEX 97.0 A YAMAHA WR/YZ 450 14-18, VERTEX 23958A COMPR 12,5:1
Vertex UK piston kit 23958A with a compression ratio of 12.5:1. 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 standard. Bore size 97.00mm [A 96.94mm]. Replacement parts include rings (590397000003), pin (715405), and clips (72074). Cross reference numbers: Piston Assy 1SL-116A0-00-00, Piston (Std) 1SL-11631-00-00, Piston Ring Set (Std) 33D-11603-00-00, Pin, Piston 33D-11633-00-00, Circlip 93450-19052-00.
- SKU
- 23958A
- Brand
- Vertex
- Availability
- In Stock (1)
FULL DESCRIPTION
Vertex Piston Kit - 97.0mm Bore, 12.5:1 Compression
This high-quality Vertex Piston Kit is designed as an OEM replacement, offering exceptional performance and durability. Engineered for specific motorcycle applications, it provides a reliable solution for engine rebuilds and performance enhancements.
Key Features:
- Complete Kit: Includes piston, rings, wrist pin, and circlips for a comprehensive replacement.
- Advanced Heat Treatment: All pistons undergo a T-5 or T-6 hardening and tempering cycle for superior strength and longevity.
- Precision Bore Size: Features a 97.00mm bore size for an exact fit.
- Optimized Compression Ratio: Offers a 12.5:1 compression ratio for enhanced power output.
- OEM Standard: Fitted as standard equipment on many OEM bikes, ensuring compatibility and quality.
- Made in Italy: Crafted with expert Italian engineering and manufacturing standards.
- Replacement Parts Available: Individual replacement rings, pins, and clips are available separately.
Specifications:
- Bore Size: 97.00mm
- Compression Ratio: 12.5:1


