Carrillo BLS1129-005 Bullet LS Forged Piston Kit 4.070 Bore 4.125 Stroke +9.5cc Dome

The CP-Carrillo Bullet LS BLS1129-005 is a high-performance forged piston and ring kit engineered specifically for GM LS engines with 15-degree valve angle cylinder heads, including 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L applications. This complete 8-piston set features a +9.5cc dome design that delivers an aggressive 13.5:1 compression ratio when paired with 68cc cylinder heads, making it ideal for naturally aspirated builds demanding maximum power.

Key Specifications:

• Bore: 4.070 inches
• Stroke: 4.125 inches
• Rod Length: 6.125 inches
• Compression Height: 1.050 inches
• Crown Volume: +9.5cc dome
• Compression Ratio: 13.5:1 (with 68cc heads)
• Piston Weight: 448 grams each
• Wrist Pin Diameter: 0.927 inches
• Wrist Pin Length: 2.250 inches

Premium Construction and Features:

• Proudly manufactured in the USA from premium 2618 aluminum alloy forgings for exceptional strength and thermal stability
• Special skirt design engineered to minimize piston noise and reduce friction
• Complete ring package included: 1.5mm steel gas nitride top ring, 1.5mm Napier second ring, and 3.0mm oil ring
• Wrist pins included with each piston
• Suitable for naturally aspirated applications

This piston kit represents CP-Carrillo's commitment to delivering race-proven performance technology at competitive pricing. Each component is precision-machined to exacting tolerances, ensuring optimal ring seal, consistent compression, and reliable operation in high-performance street and competition engines.