Name: Piston Kit 99-18 YZ250 66.40 C, Wossner 8216DC Yamaha MX, 2 Ring Piston
Brand: Wossner
SKU: 56-W742.C.WO

Piston Kit 99-18 YZ250 66.40 C, Wossner 8216DC Yamaha MX, 2 Ring Piston

Wossner
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Description

This Wossner piston kit with a 66.42mm bore (+0.02mm oversize, actual size 66.37mm) is designed for Yamaha YZ250 models from 1999 to 2018. Featuring a forged 2-ring design, it delivers enhanced durability, heat dissipation, and reliability under high-performance two-stroke engine conditions.

Features

Forged 2-ring piston for strength and long-lasting performance
Optimised for effective heat transfer from the combustion chamber to the cylinder wall
Elliptical profile distributes load evenly, reducing localised pressure and risk of piston collapse
Precision-engineered and manufactured in Germany

Specifications

Bore size: 66.42 mm
Actual piston size: 66.37 mm
Display (cm³): 249
Stroke (mm): 54.10
Clearance (mm): 0.06
Compression ratio: 2-stroke (Wossner and OEM)
Compression height (mm): 28.00

Vehicle Fitments

1999–2018 Yamaha YZ250

Included Components

Piston: Wossner PN# 8216DC (2-ring)
Lock: PN# CW18
Pin: PN# WP033
Ring Set: PN# RSB6640 x 2
Rod: PN# P2028

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ X 250	2016-2020
YAMAHA	YZ X 250	2016-2021
YAMAHA	YZ 250	2002-2021
SUZUKI	RM 250	2003-2012
YAMAHA	YZ X 250	2016-2019
YAMAHA	YZ 250	1999-2019
YAMAHA	YZ 250	1999-2020
YAMAHA	YZ 250	1999-2021
YAMAHA	YZ X 250	2016-2018
YAMAHA	YZ 250	1999-2018
YAMAHA	YZ 250	1999-2001
YAMAHA	YZ 250	2002-2019

Piston Kit 99-18 YZ250 66.40 C, Wossner 8216DC Yamaha MX, 2 Ring Piston

Wossner
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This Wossner piston kit with a 66.42mm bore (+0.02mm oversize, actual size 66.37mm) is designed for Yamaha YZ250 models from... Read more

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SKU: 56-W742.C.WO

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Description

This Wossner piston kit with a 66.42mm bore (+0.02mm oversize, actual size 66.37mm) is designed for Yamaha YZ250 models from 1999 to 2018. Featuring a forged 2-ring design, it delivers enhanced durability, heat dissipation, and reliability under high-performance two-stroke engine conditions.

Features

Forged 2-ring piston for strength and long-lasting performance
Optimised for effective heat transfer from the combustion chamber to the cylinder wall
Elliptical profile distributes load evenly, reducing localised pressure and risk of piston collapse
Precision-engineered and manufactured in Germany

Specifications

Bore size: 66.42 mm
Actual piston size: 66.37 mm
Display (cm³): 249
Stroke (mm): 54.10
Clearance (mm): 0.06
Compression ratio: 2-stroke (Wossner and OEM)
Compression height (mm): 28.00

Vehicle Fitments

1999–2018 Yamaha YZ250

Included Components

Piston: Wossner PN# 8216DC (2-ring)
Lock: PN# CW18
Pin: PN# WP033
Ring Set: PN# RSB6640 x 2
Rod: PN# P2028

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ X 250	2016-2020
YAMAHA	YZ X 250	2016-2021
YAMAHA	YZ 250	2002-2021
SUZUKI	RM 250	2003-2012
YAMAHA	YZ X 250	2016-2019
YAMAHA	YZ 250	1999-2019
YAMAHA	YZ 250	1999-2020
YAMAHA	YZ 250	1999-2021
YAMAHA	YZ X 250	2016-2018
YAMAHA	YZ 250	1999-2018
YAMAHA	YZ 250	1999-2001
YAMAHA	YZ 250	2002-2019

Shipping & Delivery

How long will my item take to arrive?

Orders are typically dispatched within 1 working day and are shipped on a 24hour (non-guaranteed) service.

Where do you ship to?

We currently only ship orders within the UK.

How can I track my order?

Once your order has been dispatched, you will receive a tracking code. Tracking information is emailed to the email address that was provided when placing the order.

Can I collect my order?

Unfortunately we do not offer order collections from our fulfilment centre.