2Bros Parts

PISTON KIT 99-18 YZ250 66.40 A WOSSNER 8216DA YAMAHA MX 2 RING PISTON

$173.69

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Delivery to United States 5–8 business days

Spread the cost with Klarna

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Wossner forged piston kit for Yamaha YZ250 models. Bore size 66.40mm, actual piston size 66.35mm. Precision-manufactured in Germany for high durability and reliable performance. Features include optimised heat transfer and elliptical design for even load distribution. Specifications: Bore size 66.40 mm, Actual piston size 66.35 mm, Display (cm³) 249, Stroke (mm) 54.10, Clearance (mm) 0.06, Compression ratio 2-stroke, Compression height (mm) 28.00. Included components: Piston (Wossner PN# 8216DA, 2-ring), Lock (PN# CW18), Pin (PN# WP033), Ring Set (PN# RSB6640 x 2), Rod (PN# P2028). Cross-Reference OEM Part Numbers: 1P8-11631-00-A0, 1P8-11631-00-B0, 1P8-11631-00-C0, 1P8-11631-00-D0, 5CU-11603-10-00, 5UP-11633-00-00, 93450-19052-00. Weight: 320 grams.

Specifications
SKU
56-W742.A.WO
Brand
Wossner
Availability
In Stock (4)

Fitments (51)

MakeModelYear
FANTICXX 2502022
FANTICXX 2502023
FANTICXX 2502024
FANTICXX 2502025
SUZUKIRM 2502003
SUZUKIRM 2502004
SUZUKIRM 2502005
SUZUKIRM 2502006
SUZUKIRM 2502007
SUZUKIRM 2502008
SUZUKIRM 2502009
SUZUKIRM 2502010
SUZUKIRM 2502011
SUZUKIRM 2502012
YAMAHAYZ 2501999
YAMAHAYZ 2502000
YAMAHAYZ 2502001
YAMAHAYZ 2502002
YAMAHAYZ 2502003
YAMAHAYZ 2502004
YAMAHAYZ 2502005
YAMAHAYZ 2502006
YAMAHAYZ 2502007
YAMAHAYZ 2502008
YAMAHAYZ 2502009
YAMAHAYZ 2502010
YAMAHAYZ 2502011
YAMAHAYZ 2502012
YAMAHAYZ 2502013
YAMAHAYZ 2502014
YAMAHAYZ 2502015
YAMAHAYZ 2502016
YAMAHAYZ 2502017
YAMAHAYZ 2502018
YAMAHAYZ 2502019
YAMAHAYZ 2502020
YAMAHAYZ 2502021
YAMAHAYZ 2502022
YAMAHAYZ 2502023
YAMAHAYZ 2502024
YAMAHAYZ 2502025
YAMAHAYZ 250X2016
YAMAHAYZ 250X2017
YAMAHAYZ 250X2018
YAMAHAYZ 250X2019
YAMAHAYZ 250X2020
YAMAHAYZ 250X2021
YAMAHAYZ 250X2022
YAMAHAYZ 250X2023
YAMAHAYZ 250X2024
YAMAHAYZ 250X2025
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
66.40mm
Variant Id
257590
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Piston Kit for Yamaha YZ250

This Wossner piston kit is engineered for high-performance Yamaha YZ250 motorcycles. Manufactured in Germany, the forged piston offers exceptional strength and durability, designed to withstand the rigors of two-stroke racing and performance riding.

Key Features

  • Forged piston construction for superior mechanical strength and longevity.
  • Optimized design for efficient heat transfer from the combustion chamber to the cylinder walls, enhancing thermal performance.
  • Elliptical piston design promotes even load distribution, reducing the risk of piston collapse and ensuring consistent operation.
  • Precision manufactured in Germany to exacting standards for reliable performance.
  • Includes a 2-ring piston (Wossner PN# 8216DA), lock (PN# CW18), pin (PN# WP033), ring set (PN# RSB6640 x 2), and rod (PN# P2028).

Specifications

  • Bore Size: 66.40 mm
  • Actual Piston Size: 66.35 mm
  • Displacement (cm³): 249
  • Stroke (mm): 54.10
  • Clearance (mm): 0.06
  • Compression Ratio: 2-stroke (Wossner and OEM compatible)
  • Compression Height (mm): 28.00
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

Call us+44 330 133 3748
Email us[email protected]

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.

Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. 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.

Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

More answers in our FAQ.

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