2Bros Parts

PISTON KIT VERTEX 52.5 A YAMAHA YZ 85 02-18, VERTEX 23628A OS+5.00 SUPERMINI BIG BORE

£172.09

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Free UK delivery 2–4 business days

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Vertex UK piston kit 23628A. 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: 52.50mm big bore +5.00. Replacement parts: Rings 53010005250, Pin 715286, Clips 72050.

Specifications
SKU
23628A
Brand
Vertex
Availability
In Stock (2)

Fitments (34)

MakeModelYear
YAMAHAYZ 852002
YAMAHAYZ 852003
YAMAHAYZ 852004
YAMAHAYZ 852005
YAMAHAYZ 852006
YAMAHAYZ 852007
YAMAHAYZ 852008
YAMAHAYZ 852009
YAMAHAYZ 852010
YAMAHAYZ 852011
YAMAHAYZ 852012
YAMAHAYZ 852013
YAMAHAYZ 852014
YAMAHAYZ 852015
YAMAHAYZ 852016
YAMAHAYZ 852017
YAMAHAYZ 852018
YAMAHAYZ SUPERMINI 852002
YAMAHAYZ SUPERMINI 852003
YAMAHAYZ SUPERMINI 852004
YAMAHAYZ SUPERMINI 852005
YAMAHAYZ SUPERMINI 852006
YAMAHAYZ SUPERMINI 852007
YAMAHAYZ SUPERMINI 852008
YAMAHAYZ SUPERMINI 852009
YAMAHAYZ SUPERMINI 852010
YAMAHAYZ SUPERMINI 852011
YAMAHAYZ SUPERMINI 852012
YAMAHAYZ SUPERMINI 852013
YAMAHAYZ SUPERMINI 852014
YAMAHAYZ SUPERMINI 852015
YAMAHAYZ SUPERMINI 852016
YAMAHAYZ SUPERMINI 852017
YAMAHAYZ SUPERMINI 852018
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
52.5mm
Variant Id
282566
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Vertex Piston Kit - Big Bore +5.00mm

Enhance the performance of your motorcycle with this Vertex Big Bore Piston Kit. Designed as a high-quality replacement, this kit is engineered to meet or exceed original equipment manufacturer (OEM) standards.

Key Features:

  • OEM Replacement Quality: Provides standard pistons and components equivalent to original factory parts.
  • Complete Kit: Includes all necessary components for installation: piston, rings, wrist pin, and circlips.
  • Heat Treated: All pistons undergo a T-5 or T-6 hardening and tempering cycle for increased durability and performance.
  • Durable Construction: Manufactured in Italy with a focus on precision and longevity.
  • Big Bore Specification: Features an oversized bore size of 52.50mm (+5.00mm), with a base bore size of 52.44mm, ideal for Supermini applications.

Specifications:

  • Bore Size: 52.50mm (Big Bore +5.00)
  • Base Bore Size: 52.44mm

Replacement parts are available individually for continued maintenance: rings (53010005250), pin (715286), and clips (72050).

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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