PISTON KIT VERTEX 99.0 A YAMAHA YZ/WR 450 10-18, VERTEX 23655A OS+2.00 BIG BORE XL COMPR 12,5:1
Vertex UK piston kit 23655A. Compression ratio 12.5:1. All Vertex Pistons are heat treated with a T-5 or T-6 hardening and tempering cycle. Kits include piston, rings, wrist pin and circlips. Replacement rings are sold individually. Made in Italy. Standard pistons and components are OEM replacements and fitted in many OEM bikes as STD. Bore size 99.00mm Big Bore +2.00mm. Replacement parts: Rings 590299000001 SET, Pin 715405, 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
- 23655A
- Brand
- Vertex
- Availability
- In Stock (1)
FULL DESCRIPTION
Vertex Piston Kit Big Bore XL 99.0mm, 12.5:1 Compression
This Vertex Piston Kit is designed for high-performance applications, offering an oversized bore for increased displacement. Vertex pistons are manufactured in Italy and are known for their quality and reliability, often serving as Original Equipment Manufacturer (OEM) replacements.
Key Features:
- Big Bore Oversized Piston Kit
- Compression Ratio: 12.5:1
- Bore Size: 99.00mm (Big Bore +2.00mm)
- Includes piston, rings, wrist pin, and circlips
- All pistons undergo a T-5 or T-6 hardening and tempering heat treatment cycle
- Replacement rings are available for individual purchase
- OEM quality, fitted as standard on many motorcycles
Specifications:
- Bore Size: 99.00mm
- Oversize: +2.00mm
- Piston Size: A (98.94mm)


