Wiseco V-Twin Piston Kit

Wiseco K1683 forged piston kit for V-twin motorcycles, engineered from high-silicon aluminum for strength, reduced weight, and improved heat transfer. Precision diamond-turned finish ensures consistent geometry across all cylinder bore types—cast iron, chrome, nikasil, and boron composite.

Features

• Forged high-silicon, low-expansion aluminum
• Diamond-turned finish from CNC turning centers
• Compatible with cast iron, chrome, nikasil, and boron composite cylinders
• Available in oversize options for cylinder sleeve applications
• State-of-the-art computerized manufacturing

Specifications

• Brand: Wiseco
• Manufacturer Part #: K1683
• Length: 9 in
• Width: 5 in
• Height: 4 in
• Weight: 2.21 lbs

Fitment

Fits V-twin motorcycles, including Harley-Davidson and Indian Motorcycle models. Oversize options available for resleeved cylinders.

Frequently Asked Questions

What cylinder types will these pistons work with?

Wiseco pistons are compatible with cast iron, chrome, nikasil, and boron composite cylinder bores without issue.

Can I use these in a bored-over engine?

Yes. Wiseco offers oversize piston options. For resleeved cylinders, confirm your sleeve material and bore size match the piston specification.

Why are Wiseco pistons forged instead of cast?

Forged aluminum offers superior strength, lower weight, and better heat transfer than cast pistons—extending engine life and improving performance.

Do these require break-in or special installation?

Follow your engine builder's or manufacturer's installation procedures. Proper ring gap and clearance setup are critical for longevity.