Wiseco 98.00mm Stock Compression Ratio 4-Stroke Piston Kit (40099M09800) - Perfect for Motorcycle & ATV Engine Rebuilds, Performance Upgrades & Off-Road Racing

Bore: 98.00mmCompression: Stock CompressionSizing: Standard BoreForged 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.. SPECIFICATIONS. Displacement: 641cc. Bore - Standard: 98.00mm. Bore - Actual: 98.00. Bore - Oversize: STD. Stroke: 85.00mm. Cylinders: 1. ITEM CONTENTS. 3858XS - 98.00 mm Ring Set. S626 - Pin- 23mm x 2.5in. x 4.0mm wall unchromed. W5860 - 23MM ROUND WIRE PIN LOCKS (PAIR)This item fits the following vehicle applications:compatible with Arctic Cat 650 H1 4x4 Auto 2010-2011compatible with Arctic Cat 650 H1 4x4 Auto 2005-2008compatible with Arctic Cat 650 H1 4x4 Auto Mud Pro 2010-2011compatible with Arctic Cat Prowler 550 2009compatible with Arctic Cat Prowler 650 4x4 Auto 2008compatible with Arctic Cat Prowler 650 H1 2006-2007