2Bros Parts

PISTON KIT VERTEX 77.0 B HC YAMAHA YZ 250 08-13, VERTEX 23394B HC COMPR 13,9:1 2 RINGS

£221.65

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Vertex UK Piston Kit 23394B. HC Compr 13.9:1, 2-Rings. 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 STD. Bore Size: 77.00mm [B 76.96mm]. Replacement Parts: Rings 590277000002 SET, Pin 715381, Clips 72055. Cross reference numbers ONLY: Piston (Std) 17D-11631-90-00, Piston Ring Set (Std) 17D-11603-00-00, Pin, Piston 17D-11633-00-00, Circlip 93450-17129-00. Weight: 476 grams.

Specifications
SKU
23394B
Brand
Vertex
Availability
Out of Stock

Fitments (6)

MakeModelYear
YAMAHAYZ 250F2008
YAMAHAYZ 250F2009
YAMAHAYZ 250F2010
YAMAHAYZ 250F2011
YAMAHAYZ 250F2012
YAMAHAYZ 250F2013
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
77mm
Variant Id
282713
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Vertex High Compression Piston Kit for Yamaha

This Vertex piston kit is designed to provide a high-performance upgrade for your motorcycle engine. Engineered with precision and durability in mind, this kit is manufactured in Italy and meets stringent quality standards, often being fitted as standard equipment on OEM bikes.

Key Features:

  • High Compression Ratio: Features a compression ratio of 13.9:1 for increased power and performance.
  • Complete Kit: Includes the piston, rings, wrist pin, and circlips for a full replacement.
  • Durable Construction: All Vertex pistons undergo a T-5 or T-6 hardening and tempering heat treatment cycle for enhanced strength and longevity.
  • OEM Standard Replacements: Designed as direct replacements for standard pistons and components, ensuring a precise fit.
  • Bore Size: 77.00mm (with a T-code of 76.96mm).
  • 2-Ring Design: Equipped with two piston rings for optimal sealing and performance.

Specifications:

  • Piston Bore Size: 77.00mm
  • Compression Ratio: 13.9:1
  • Number of Rings: 2

Replacement Parts Available Separately:

  • Rings Set: 590277000002
  • Pin: 715381
  • Clips: 72055
Before you buy

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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

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