HKS GR86 / BRZ 2.5L High Comp Step 2 Full Piston Kit

HKS FA24 2.5L High Comp Step 2 Piston Full Kit

Piston Kit

• To prevent the breakage of the second land, the material employs A2618 material, which has high-temperature strength, to achieve a low pin height that eliminates the need for making any service holes.
• 2-layer molybdenum coated to help reduce friction.
• The cavity on the piston head optimizes the atomization of direct injection.
• 3D Piston crown shape sustains tumble flow.
• The uneven shape of the piston head allows using the high-lift camshaft.

Connecting Rod

STEP2

• Provide a dedicated high-strengthened billet connecting rod for the long stroke. Any clearance modifications to the stock engine block are unnecessary because of a specially designed crank pin.
• Optimized wall thickness based on strength analysis. Achieved approximately 30% increase in strength, which minimizing weight gain.
• I-beam shape was selected to increase the buckling strength.
• Manufacturing by the billet to makes it possible to ideal thickness shape and eliminate the damaged starting point on the surface. The surface is also exposed to a powerful shot penning process to improve fatigue strength.
• Optimum heat treatment is performed on the chrome-molybdenum steel to enhance its strength and toughness.

Crankshaft