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This high-compression version of HKS's G16E kit combines billet Triple Tumble pistons with reinforced I-beam connecting rods. The crown design generates an extra tumble flow on the intake side as the piston rises, spreading the flame to resist knock and allow a higher compression ratio for sharper response. Forged A2618 construction, a titanium-coated top ring, and WPC-finished rods handle the heat and load of a serious build.
Details: Forged A2618 BCD 'Triple Tumble' high-compression pistons; Bore 87.5mm (stock displacement), 352g per piston; Machined nickel-chrome I-beam conrods, ~25% stronger than stock; 24mm piston pin; Titanium-coated top ring; nickel plating above top ring; 2-layer anti-seize coating; Three piston cooling oil jets
Fitment: 2023+ Toyota GR Corolla (GZEA14H) and GR Yaris (GXPA16), G16E-GTS — Shared G16E-GTS engine internal. High-compression spec intended for high-octane fuel. Professional engine build required; install pistons and rods together.
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