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Picture of YAMAHA YZ/WR400 13.5:1 3701XR PISTON 4650M09400
Picture of YAMAHA YZ/WR400 13.5:1 3701XR PISTON 4650M09400 Picture of YAMAHA YZ/WR400 13.5:1 3701XR PISTON 4650M09400

YAMAHA YZ/WR400 13.5:1 3701XR PISTON 4650M09400

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YAMAHA YZ/WR400 13.5:1 3701XR PISTON 4650M09400
Manufacturer: Wiseco
Manufacturer part number: 4650M09400
Old price: $277.95
$200.60
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Forged from high-silicon aluminum alloy for maximum strength and dependability.

Innovative forging design and piston skirt provide maximum horsepower and torque.

Wiseco High-Performance piston kits are priced with piston, rings, pins and circlips (unless noted otherwise).

Oversize pistons require cylinder sleeving.

Manufacturer Part #: 4650M09400

Prop 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or reproductive harm. For more information go to www.P65Warnings.ca.gov.

Products specifications

Attribute name Attribute value
Product Series 4 Stroke Forged Series
Included Components Ring Set #3701XR, Wrist Pin #S600, CirClip #CW18
Bore Diameter 94.00
Piston Diameter 93.92
Compression Ratio Actual 13.5:1
Material 2618
Skirt Coating No
Piston Oversize 2.00
Product Type Engine Piston Kit
Category Hierarchy Powersports>Pistons>Piston Kits>Dirt Bike Piston Kits
Prop 65 - Short Label prop65warninglabel.jpg
Prop 65 (C, R or CR) CR
Prop 65 Yes/No Yes
Cylinder Bore Diameter 94
Oversized Amount 2.00
EBAY Category ID 177976
Piston Outside Diameter 93.92
Country of Origin US
Condition New
🚗 Compatible with
5 vehicles are compatible with this product · 1998–2000
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