Carrillo BLS1006-040 Bullet Series Forged Piston Set 4.040 Bore LS Engine

The CP-Carrillo Bullet Series BLS1006-040 forged piston and ring kit delivers high-performance engine components at an exceptional value. Designed specifically for GM LS engines with 15-degree valve angle heads (4.8L, 5.3L, 5.7L, 6.0L, 6.2L), this complete piston set combines CP-Carrillo's championship-winning engineering with economical manufacturing efficiency.

Key Specifications:

• Bore: 4.040 inches
• Stroke: 4.000 inches
• Compression Height: 1.110 inches
• Rod Length: 6.125 inches
• Crown Volume: -27.5cc dish
• Compression Ratio: 9.2:1 with 64cc heads
• Piston Weight: 415 grams
• Pin Diameter: 0.927 inches
• Pin Length: 2.250 inches

Premium Construction:

• Forged from 2618-T61 aluminum alloy for maximum strength and durability
• Manufactured in the USA using computer-designed forgings
• Balanced to within +/- 1 gram for smooth operation
• Suitable for power adders including nitrous oxide, superchargers, and turbochargers
• Special skirt design minimizes piston noise

Complete Ring Package Included:

• 1.5mm steel gas nitrided top ring for durability and reduced friction
• 1.5mm Napier second ring
• 3.0mm oil ring
• Chromoly wrist pins with wire locks included

CP-Carrillo Bullet Series pistons are manufactured on the same precision equipment as traditional CP pistons but utilize dedicated forgings and centralized manufacturing cells to deliver exceptional quality at a more accessible price point. These pistons incorporate extensive research, tight tolerances, and rigorous quality control that have made CP-Carrillo an industry leader in performance engine components.