Name: Piston Kit 99-18 YZ250 66.40 B, Wossner 8216DB Yamaha MX, 2 Ring Piston
Brand: Wossner
SKU: 56-W742.B.WO
Price: 160.18 GBP
Availability: InStock

Piston Kit 99-18 YZ250 66.40 B, Wossner 8216DB Yamaha MX, 2 Ring Piston

Wossner
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Description

This Wossner piston kit with a 66.41mm bore (+0.01mm oversize, actual size 66.36mm) is designed for Yamaha YZ250 models from 1999 to 2018. The forged 2-ring piston is engineered for high-performance applications, offering strength, thermal efficiency, and reliability in demanding two-stroke engines.

Features

Forged construction for maximum strength and durability
Optimised for effective heat transfer from combustion chamber to cylinder walls
Elliptical shape ensures uniform bearing surface and reduces the risk of piston collapse under thermal stress
Precision-made in Germany

Specifications

Bore size: 66.41 mm
Actual piston size: 66.36 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# 8216DB (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 B, Wossner 8216DB Yamaha MX, 2 Ring Piston

Wossner
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Product form

This Wossner piston kit with a 66.41mm bore (+0.01mm oversize, actual size 66.36mm) is designed for Yamaha YZ250 models from... Read more

9 in stock 1-2 business days

£160.18 Incl. VAT

Guaranteed secure & safe checkout.

SKU: 56-W742.B.WO

Free shipping on all orders above £75

No hassle returns within 30 days

Description

This Wossner piston kit with a 66.41mm bore (+0.01mm oversize, actual size 66.36mm) is designed for Yamaha YZ250 models from 1999 to 2018. The forged 2-ring piston is engineered for high-performance applications, offering strength, thermal efficiency, and reliability in demanding two-stroke engines.

Features

Forged construction for maximum strength and durability
Optimised for effective heat transfer from combustion chamber to cylinder walls
Elliptical shape ensures uniform bearing surface and reduces the risk of piston collapse under thermal stress
Precision-made in Germany

Specifications

Bore size: 66.41 mm
Actual piston size: 66.36 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# 8216DB (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.