Wiseco WK1141 Forged Piston Kit 83mm Bore 700cc Twin Cylinder Powersports

The Wiseco WK1141 is a complete forged piston kit designed for 700cc twin-cylinder powersports engines with an 83mm (3.268 in.) bore diameter. Engineered and machined at Wiseco's facility in Mentor, Ohio, this kit delivers the strength, precision, and reliability demanded by both performance riders and recreational enthusiasts.

Key Features:

• Forged High-Silicon Aluminum Construction: Each piston is forged from high-silicon, low-expansion aluminum alloy for superior tensile strength, reduced reciprocating weight, improved heat transfer, and extended service life compared to cast alternatives.
• CNC Diamond-Turned Finish: Precision machined on CNC computer-controlled turning centers, each piston features a diamond-turned finish that guarantees tight dimensional accuracy and a consistent surface profile with zero size variation.
• Broad Cylinder Compatibility: Engineered to install with confidence in cast iron, chrome, Nikasil, and boron composite cylinder bore compositions.
• Oversize Availability: Available in a range of oversize options to restore worn cast iron lined cylinders. Chrome, Nikasil, and boron composite cylinders can be resleeved with replacement sleeves to accept Wiseco oversize pistons.
• Complete Kit: Includes piston(s), piston rings, wrist pin, and circlips — everything needed for a full engine rebuild or performance upgrade.

With over 80 years of powersports piston manufacturing experience, Wiseco designs each piston kit to the tightest tolerances for the optimal combination of performance and durability. The WK1141 is the trusted choice for rebuilding or upgrading 700cc twin-cylinder engines to OEM standards or beyond.