Carrillo BC1025-045 Bullet Series Forged Piston and Ring Kit 4.045 Bore SBC

The CP-Carrillo BC1025-045 is part of the Bullet Series piston and ring kit lineup, designed specifically for Small Block Chevy engines running 23° cylinder heads. This piston is sized for a 4.045" bore and is engineered for high-performance naturally aspirated applications.

Key Features:

• Piston Material: 2618 forged aluminum alloy for superior strength and durability
• Piston Style: Flat top with two symmetrical valve reliefs (-6.8cc head volume)
• Bore Size: 4.045 in.
• Stroke: 3.750 in.
• Rod Length: 6.000 in.
• Compression Height: 1.125 in.
• Pin Diameter: 0.927 x 2.500 in. chromoly wrist pin with wire locks included
• Ring Pack: 1.5mm steel gas-nitride top ring / 1.5mm Napier second ring / 3.0mm oil ring
• Intake Pocket Depth: 0.310 in.
• Piston Balance: ±1 gram
• Dual forced pin oilers, contact reduction grooves, and accumulator groove
• Forged side relief for reduced piston noise
• Computer-designed forgings with tight tolerances and rigorous quality control
• Proudly manufactured in the USA

The Bullet Series delivers the performance engineering CP-Carrillo is known for at an accessible price point. Each kit includes pistons, ring sets, chromoly wrist pins, and wire locks. A spec sheet with piston-to-wall clearance recommendations is included.