Part Number:

BCD PISTON + CONROD KIT G16E STEP3: 21004-AT007

BCD PISTON KIT G16E STEP3 D87.5mm: 21003-AT006

CONROD SET G16E STEP 3: 23004-AT003

PISTON PIN SET: 21005-AK011

Fitment: 23+ Toyota GR Corolla

Details:

Bore: 87.5mm

Stroke: 89.7mm

Displacement: 1,618cm³

Compression ratio: 10.4 (t=0.69)

The kit to strengthen the pistons, the weak point of the G16E-GTS engine, is finally available. The pistons are machined to reduce unnecessary wall thickness to reduce weight, and HKS' bridge structure piston design is used to increase strength. By use of a machined I-beam connecting rod made of nickel-chromium steel, strength is increased by 25% compared to the stock unit..