Carrillo BLS1134-125 Bullet LS 4.125" Bore 4.125" Stroke -30.0cc Dish Forged Piston & Ring Kit

The CP-Carrillo BLS1134-125 is a Bullet Series forged piston and ring kit featuring a 4.125" bore, 4.125" stroke, and a -30.0cc dish crown design. Engineered for GM LS platform builds running longer-stroke combinations, this kit delivers the precision and strength CP-Carrillo is known for at an accessible price point.

Designed specifically to fit all GM LS 15° cylinder heads (compatible with 4.8, 5.3, 5.7, 6.0, and 6.2L applications), these pistons are manufactured in the USA from 2618 forged aluminum alloy — the same material used in top-tier race pistons — making them well-suited for forced induction and power adder applications including nitrous oxide, superchargers, and turbochargers.

Key Features:

• Bore: 4.125"
• Stroke: 4.125"
• Crown: -30.0cc dish
• Application: GM LS 15° heads (4.8, 5.3, 5.7, 6.0, 6.2L)
• Forged from 2618 aluminum alloy for superior strength and heat resistance
• Suitable for nitrous oxide, supercharged, and turbocharged applications
• Special skirt design for reduced piston noise
• Includes 1.5mm steel gas nitride top ring, 1.5mm Napier second ring, and 3.0mm oil ring
• Includes wrist pins — standard .180 wall
• Made in the USA

The Bullet Series delivers CP-Carrillo's renowned computer-designed forgings, tight tolerances, and rigorous quality control in a value-oriented package. Ideal for high-displacement LS stroker builds where a deep dish is required to manage compression ratios with larger bore and stroke combinations.