Quick view HKS HKS BCD PISTON & CONROD KIT G16E HC-TT STEP 3 HKS BCD PISTON & CONROD KIT G16E HC-TT STEP 3 (hks21004-AT011) ā Billet Piston Kit Bore: Ī¦87.5 / Weight: 352g ā® To enhance knock resistance and achieve higher compression ration, wehave adopted HKS's unique "Triple Tumble" crown structure... $3,492.00 $3,880.00 Add to Cart