Wiseco Tracker Piston Kit 10.5:1 +.020 - Harley Touring, Softail, Dyna

The Wiseco Tracker Piston Kit is a forged piston set for V-twin engines in the 96 to 103 cubic-inch range, with a 4.375-inch stroke and a 10.5:1 compression ratio. Riders choose it for a rebuild or for a performance build that needs a solid, durable base.

The forged piston crown is built for strength, and the ArmorGlide skirt coating reduces friction and scuffing for smoother operation. Force-fed pin oiling enhances lubrication under load, helping the assembly hold up when pressure is high. The 10.5:1 compression ratio is intended to deliver power gains and improved throttle response across the rev range. This is a +.020 oversized kit, which suits engines whose cylinder walls need a bore to clean up, or builds that call for an oversized piston. Cylinders should be bored and honed to the exact specification for these pistons to achieve the intended performance and longevity.

For off-road / closed-course race use only.

Specifications

• Brand: Wiseco
• Part Number: K0210P2
• Compression Ratio: 10.5:1
• Stroke: 4.375 in
• Displacement Range: 96-103 cubic-inch
• Oversize: +.020
• Construction: Forged
• Skirt Coating: ArmorGlide
• Weight: 2.75 lbs

Common questions