Name: Piston Kit 14-15 YZF250 77.00, Forged Wossner 8893DA, 1SM-11631-01-00
Brand: Wossner
SKU: 56-W4961.A.WO

Piston Kit 14-15 YZF250 77.00, Forged Wossner 8893DA, 1SM-11631-01-00

Wossner
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Description

This Wossner forged piston kit, part number 8893DA, features a standard 77mm bore with an actual piston size of 76.96mm. It is engineered for TM MX-F450 (2009–2010), MX-Fi450 (2011), and EN-Fi450 (2011) models. Manufactured in Germany, the piston is designed for high-performance four-stroke applications, offering superior heat transfer, strength, and pressure distribution due to its elliptical profile.

Features

Forged construction for strength and long-lasting durability
Elliptical design for uniform expansion and thrust load balance
Optimized for heat transfer in high-performance engines
Made in Germany
Direct OEM replacement
Easy to install; professional installation recommended if unsure

Specifications

Bore Size: 77.00mm
Actual Piston Size: 76.96mm
Displacement: 249cm³
Stroke: 53.60mm
Clearance: 0.05mm
Dome Volume: -3.00cm³
Wossner Compression Ratio: 13.70:1
OEM Compression Ratio: 13.50:1
Compression Height: 20.20mm

Cross-Reference OEM Part Numbers

40116M07700
1SM-11631-01-00
CW16 (Lock)
WP087 (Pin)
770XAS-2 (Ring Set)

Vehicle Fitments

TM MX-F450 (2009–2010)
TM MX-Fi450 (2011)
TM EN-Fi450 (2011)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZF X 250	2015-2019
YAMAHA	WRF 250	2015-2018
YAMAHA	WR F 250	2015-2017
YAMAHA	YZ FX 250	2015-2016
YAMAHA	YZ F 250	2014-2015
YAMAHA	YZF X 250	2015-2016
YAMAHA	WRF 250	2015-2017
YAMAHA	YZF 250	2014-2015
YAMAHA	YZF X 250	2014-2015
YAMAHA	WRF 250	2014-2017

Piston Kit 14-15 YZF250 77.00, Forged Wossner 8893DA, 1SM-11631-01-00

Wossner
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This Wossner forged piston kit, part number 8893DA, features a standard 77mm bore with an actual piston size of 76.96mm.... Read more

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SKU: 56-W4961.A.WO

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Description

This Wossner forged piston kit, part number 8893DA, features a standard 77mm bore with an actual piston size of 76.96mm. It is engineered for TM MX-F450 (2009–2010), MX-Fi450 (2011), and EN-Fi450 (2011) models. Manufactured in Germany, the piston is designed for high-performance four-stroke applications, offering superior heat transfer, strength, and pressure distribution due to its elliptical profile.

Features

Forged construction for strength and long-lasting durability
Elliptical design for uniform expansion and thrust load balance
Optimized for heat transfer in high-performance engines
Made in Germany
Direct OEM replacement
Easy to install; professional installation recommended if unsure

Specifications

Bore Size: 77.00mm
Actual Piston Size: 76.96mm
Displacement: 249cm³
Stroke: 53.60mm
Clearance: 0.05mm
Dome Volume: -3.00cm³
Wossner Compression Ratio: 13.70:1
OEM Compression Ratio: 13.50:1
Compression Height: 20.20mm

Cross-Reference OEM Part Numbers

40116M07700
1SM-11631-01-00
CW16 (Lock)
WP087 (Pin)
770XAS-2 (Ring Set)

Vehicle Fitments

TM MX-F450 (2009–2010)
TM MX-Fi450 (2011)
TM EN-Fi450 (2011)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZF X 250	2015-2019
YAMAHA	WRF 250	2015-2018
YAMAHA	WR F 250	2015-2017
YAMAHA	YZ FX 250	2015-2016
YAMAHA	YZ F 250	2014-2015
YAMAHA	YZF X 250	2015-2016
YAMAHA	WRF 250	2015-2017
YAMAHA	YZF 250	2014-2015
YAMAHA	YZF X 250	2014-2015
YAMAHA	WRF 250	2014-2017

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.