Wiseco V-Twin Piston Kit - 1200 EVO Sportster 10.5:1 Comp — Harley-Davidson Electra Glide Classic, Sportster 883, Softail Custom (1984-1999)

Wiseco forged piston kit for 1200cc EVO Sportster engines at 10.5:1 compression ratio. High-silicon aluminum construction delivers strength, reduced weight, and superior heat transfer for extended piston life.

Features

• Forged high-silicon, low-expansion aluminum
• Diamond-turned finish for precise bore fit
• Compatible with cast iron, chrome, nikasil, and boron composite cylinders
• CNC-machined for zero size variation
• State-of-the-art manufacturing process

Specifications

• Brand: Wiseco
• Manufacturer Part #: K1686
• Compression Ratio: 10.5:1
• Engine: 1200cc EVO Sportster
• Weight: 3.1116 lbs

Fitment

Fits Harley-Davidson 1200cc EVO Sportster models.

Frequently Asked Questions

What compression ratio is this kit?

10.5:1 compression ratio, designed for stock and mildly modified 1200 EVO Sportsters.

Will this work with my chrome-plated or nikasil cylinders?

Yes — Wiseco pistons are engineered to work with cast iron, chrome, nikasil, and boron composite cylinder bores.

Do I need to re-sleeve my cylinders before installing these?

If your cylinders are worn or damaged, Wiseco oversizes are available and compatible with resleeved chrome, nikasil, and boron cylinders.

What's the weight of this piston kit?

3.1116 lbs for the complete kit.

Is professional installation required?

Yes — piston installation requires engine teardown and precise torquing. Have a qualified Harley shop handle the job.