HKS Piston Full Kit 2022 + BRZ / GR86 FA24 2.5L High Comp Step 1

21004-AT008

The kit includes; Forged piston kit, I-beam connecting rod, and forged crankshaft.

12.2 Compression Ratio

CAPACITY UPGRADE KIT
FA24 2.5L HIGH COMP STEP1

Step 1 is an excellent choice for people looking to keep their cars naturally aspirated and are merely looking for a dose of torque or for those going forced induction  and keeping boost levels at a conservative level.

POINT-1: 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.

POINT-2: Connecting Rod

STEP1

• Exclusive conrods designed for longer stroke. The crank pin size is designed for a dedicated size. Thus it eliminates the modifications on the engine side.
• It optimizes the connecting rod bolt size and employs the high-strength split-type (not machined the cutting surface) I-beam.

POINT-3　Crankshaft