Wiseco Tracker Piston Kit - 96 TO 103 4.375" Stroke 10.5:1 +.010

Wiseco Tracker piston kit for 96–103 cubic-inch V-twin engines with 4.375" stroke and 10.5:1 compression ratio. Forged piston crown with oversized valve pockets, force-fed pin oiling, and ArmorGlide skirt coating deliver reliable performance and reduced friction for Harley-Davidson and Indian Motorcycle platforms.

Features

• Forged piston crown with generous valve pockets for big valves
• Precision fit rings for ultimate sealing
• Force-fed pin oiling for enhanced lubrication
• ArmorGlide skirt coating reduces friction and improves scuff resistance
• Made in the United States

Specifications

• Brand: Wiseco
• Manufacturer Part #: K0210P1
• Engine Displacement: 96–103 cubic inches
• Stroke: 4.375 inches
• Compression Ratio: 10.5:1
• Oversize: +.010 inches
• Length: 9.5 in
• Width: 4.87 in
• Height: 4 in
• Weight: 2.75 lbs
• Country of Origin: United States of America

Fitment

Fits 96–103 cubic-inch V-twin motorcycles with 4.375" stroke, including select Harley-Davidson and Indian Motorcycle models. Verify engine displacement and stroke before ordering.

Frequently Asked Questions

What's included in this kit?

The piston and rings. Gasket kits are sold separately — order them as needed for your complete rebuild.

Will this fit my 103 cubic-inch Harley?

Yes, if your engine has a 4.375" stroke and you're running 10.5:1 compression. Always verify your exact displacement and stroke before ordering.

Do I need any special tools to install this piston?

Standard piston installation tools are required. Have a qualified machine shop or experienced builder install it to ensure proper ring end-gap and clearances.

What does the +.010 oversize mean?

The piston is 0.010 inches larger than stock bore size. Your cylinder must be bored to match this specification — do not attempt to install without proper boring.