HKS BCD PISTON KIT G16E STEP3 AA 87.5
Billet Piston Kit Bore: Φ87.5 / Weight: 352g
- To enhance knock resistance and achieve higher compression ration, we have adopted HKS’s unique “Triple Tumble” crown structure. (Triple Tumble crown structure)
- The piston crown’s design creates a third tumble flow on the intake side as the piston moves upward. This quickly spreads the flame near the edge of the intake side, which helps prevent engine knock.
- High-temperature-resistant A2618 material and precision machining combine to deliver significant weight.
- “Bridge Concept Design” (BCD) structure enhances structural rigidity and contributes to weight reduction.
- Three oil jets deliver cooling oil precisely for effective cooling.
- Nickel plating above the top ring groove improves knock resistance and wear resistance.
- A two-layer coating enhances anti-seizure properties and reduces friction.
- Original shortening piston pin design reduces the weight of the piston pin boss section.
- Titanium coating on the top ring enhances durability.
- Precisely machined edges prevent heat spots.
| 純正 | HKS HC-TT S3 KIT | |||
|---|---|---|---|---|
| Bore | 87.5mm | ← | ||
| Stroke | 89.7mm | ← | ||
| Displacement | 1,618cm3 | ← | ||
| Compression Ratio | t=0.69 | Stock | 10.5 | 10.7 |
| t=0.8 (0.79) | 23002-AT003 | – | 10.6 | |
| 23002-AT007 (S/C Pro) | ||||
| t=1.0 (1.04) | 23002-AT006 | – | 10.3 | |
| 23002-AT008 (S/C Pro) |
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