CP-Carrillo BC1031-STD Bullet Series Forged Piston & Ring Kit Standard Bore Chevy

The CP-Carrillo BC1031-STD is a complete Bullet Series forged piston and ring kit designed for Chevrolet applications at standard bore. Part of CP-Carrillo's value-driven Bullet Series line, these pistons deliver proven high-performance engineering at an accessible price point — manufactured on the same machines as CP-Carrillo's flagship race pistons.

Each piston is forged from 2618-T61 aluminum alloy, offering exceptional strength and durability for naturally aspirated, forced induction, and nitrous oxide applications. The dish-style piston design features two valve reliefs and a compression height of 1.125 in., with a 3.750 in. stroke and 6.000 in. rod length specification. The standard bore measures 4.000 in. (101.600mm).

Key Features:

• Forged 2618-T61 aluminum alloy construction for strength and thermal stability
• Dish piston design with two valve reliefs
• Piston balance within 1 gram for precision engine assembly
• Dual forced pin oilers for enhanced lubrication
• Contact reduction grooves and accumulator groove
• Forged side relief for reduced friction
• Chromoly wrist pins included with wire locks
• Contemporary high-performance ring set included
• Top ring: 1.5mm steel, plasma-moly faced
• Second ring: 1.5mm cast iron, phosphate coated
• Oil ring: 3.000mm
• File-fit rings for precise gap tuning
• Standard bore (4.000 in. / 101.600mm)
• Made in the USA

The Bullet Series was engineered to bring CP-Carrillo's industry-leading forging technology and rigorous quality control to a broader range of builds. Whether you're assembling a high-output street engine or a dedicated track build, the BC1031-STD delivers the tight tolerances and durability that have made CP-Carrillo a trusted name in performance engine building.