The CP-Carrillo Bullet Series is a set of eight forged 2618 aluminum pistons built for GM LS engines with 15° cylinder heads. Each piston pairs a 4.070 in bore and 1.115 in compression height with a 4.000 in stroke and 6.125 in rod, sizing the combination near 416 cubic inches. The -8.6cc dish top produces a 10.5:1 compression ratio with 70cc combustion chambers. The kit includes a 1.5mm steel gas nitride top ring, a 1.5mm Napier second ring, and a 3.0mm oil ring, plus 0.927 in wrist pins with a 0.180 in wall. A skirt design that reduces piston noise supports nitrous, supercharger, and turbo use.
| Type | Forged Piston Set, Bullet Series |
| Material | 2618 forged aluminum alloy |
| Bore | 4.070 in |
| Stroke | 4.000 in |
| Rod Length | 6.125 in |
| Compression Height | 1.115 in |
| Compression Ratio | 10.5:1 (with 70cc chambers) |
| Dish Volume | -8.6cc dish |
| Ring Pack | 1.5mm steel gas nitride top, 1.5mm Napier second, 3.0mm oil |
| Wrist Pin | 0.927 in diameter, 0.180 in wall (included) |
| Application | GM LS 15° heads (4.8, 5.3, 5.7, 6.0, 6.2L) |
| Quantity | Set of 8 (pistons and rings) |
| Part Number | BLS1137-005 |
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Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
