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Built to cure the G16E-GTS's known bottom-end weak point, this Step 3 piston and connecting rod package pairs HKS's Bridge Concept Design forged pistons with machined nickel-chrome I-beam rods that are about 25% stronger than stock. Supplied together, the pistons and rods preserve the factory 50% weight balance so the three-cylinder stays as smooth as OEM. A2618 piston alloy, three cooling oil jets, and WPC-treated rods make it a durable foundation for a built, high-boost G16E.
Details: Forged A2618 aluminum BCD pistons; Bore 87.5mm (stock), stroke 89.7mm, 1,618cc; Compression ratio approx. 10.4; Machined nickel-chrome I-beam conrods, ~25% stronger than stock; 24mm piston pin; Nickel plating above top ring + 2-layer low-friction coating; WPC-treated rods
Fitment: 2023+ Toyota GR Corolla (GZEA14H) and GR Yaris (GXPA16), G16E-GTS — Shared G16E-GTS engine internal; fits GR Corolla and GR Yaris. For full engine builds only - professional assembly and balancing required. Install pistons and rods as a set to avoid imbalance/vibration.
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