2Bros Parts

PISTON KIT VERTEX 97.0 B YAMAHA WR/YZ 450 14-18, VERTEX 23958B COMPR 12,5:1

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Vertex UK piston kit 23958B with a compression ratio of 12.5:1. Bore size is 97.00mm. 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 rings are sold individually.

Specifications
SKU
23958B
Brand
Vertex
Availability
In Stock (1)

Fitments (6)

MakeModelYear
YAMAHAWR 450F2016
YAMAHAWR 450F2017
YAMAHAWR 450F2018
YAMAHAYZ 450F2014
YAMAHAYZ 450F2015
YAMAHAYZ 450F2016
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
97mm
Variant Id
282763
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Vertex Piston Kit - 12.5:1 Compression

Upgrade your motorcycle's engine with this high-performance Vertex Piston Kit. Engineered for durability and optimal power output, this kit is designed to meet or exceed original equipment manufacturer (OEM) specifications. Vertex pistons are a popular choice and are fitted as standard on many OEM bikes, attesting to their quality and reliability.

This kit includes all the essential components for a complete piston replacement:

  • Piston
  • Rings
  • Wrist pin
  • Circlips

Vertex pistons undergo a rigorous heat treatment process, utilizing a T-5 or T-6 hardening and tempering cycle to ensure superior strength and longevity. This meticulous manufacturing process guarantees that each piston can withstand demanding riding conditions.

Key Features:

  • OEM Replacement Quality: Designed to match original equipment specifications for a perfect fit and performance.
  • Complete Kit: Includes piston, rings, wrist pin, and circlips for a hassle-free installation.
  • Advanced Heat Treatment: Features T-5 or T-6 hardening and tempering for enhanced durability and resistance to heat and stress.
  • High Compression Ratio: Built with a 12.5:1 compression ratio for increased power and performance.
  • Precision Bore Size: Bore size is 97.00mm, with a Piston skirt clearance of 96.95mm.
  • Made in Italy: Manufactured in Italy, ensuring high standards of craftsmanship.

Replacement rings are also available individually for future maintenance needs.

Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.

Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.

UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

More answers in our FAQ.

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