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

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

Regular price$5,220.00
Shipping calculated at checkout.


**Special order Item**

(Note: special order items are non returnable and unable to be canceled, estimated shipping dates at checkout will be incorrect.)

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


  • 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 uses a forged material.
  • It has a dedicated pin journal size. Combination use of the HKS connecting rod is recommended.

What's Included

  • Forged piston kit
  • Billet I-beam connecting rod
  • Forged crankshaft

HKS recommends using STEP 2 for a vehicle with a turbo that tends to be generated high torque.

** Not CARB Legal**

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.