The Piston Kit is part of the latest collection from

Wossner.

Features:

In-house designed and manufactured; all forgings are produced in

Wossner?s company-owned forging operation

4-stroke pistons are made using a double-bridged forging design

Lightweight pistons with the tightest piston-wall clearances in the

industry give you a quieter running engine

Standard and oversize pistons for most models, with high compression

ratios available for 4-stroke applications

All piston skirts are supplied with a Moly coating to reduce friction

and assist in break in

All piston kits include piston, ring, wrist pin and pin locks

Wossner piston kits are used by leading Supercross, Arenacross and MX

GP teams

Specifications:

Bore - Oversize: Standard

Compression Ratio: 13.5

Engine Type: 4-Stroke

Piston Diameter: 94.95 mm

Piston Material: Forged| Steel

Piston Size: Standard Size A

Product Name: Piston Kit

Ring Material: Cast| Steel

Skirt Coating: Moly Coated

Stroke Length: 63.40 mm

Style: Performance Replacement

Type: Replacement Forged Piston

To fit:

YAMAHA YFZ 450 R 2009 American Models

YAMAHA YFZ 450 R 2010 American Models

YAMAHA YFZ 450 R 2011 American Models

YAMAHA YFZ 450 R 2012 American Models

YAMAHA YFZ 450 R 2012 European Models

YAMAHA YFZ 450 R 2013 American Models

YAMAHA YFZ 450 R 2013 European Models

YAMAHA YFZ 450 R 2014 American Models

YAMAHA YFZ 450 R 2014 European Models

YAMAHA YFZ 450 R 2015 American Models

YAMAHA YFZ 450 R 2015 European Models

YAMAHA YFZ 450 R 2016 American Models

YAMAHA YFZ 450 R 2016 European Models

YAMAHA YFZ 450 R 2017 American Models

YAMAHA YFZ 450 R 2017 European Models

YAMAHA YFZ 450 2006 American Models

YAMAHA YFZ 450 2007 American Models

YAMAHA YFZ 450 2008 American Models

YAMAHA YFZ 450 2009 American Models

YAMAHA YFZ 450 2012 American Models

YAMAHA YFZ 450 2012 European Models

Manufacturer part number: 8657DA

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