Wiseco K0121A110 Big Block Mopar Flat Top Forged Piston - 383/400/440 Set

The Wiseco K0121A110 is a professional-grade forged piston set engineered for Chrysler Big Block Mopar 383, 400, and 440 cubic inch engines.

Key Specifications:

• Bore: 4.360 in.
• Compression Height: 1.130 in.
• Stroke: 4.150 in.
• Rod Length: 6.760 in.
• Wrist Pin: .990 in. diameter (Pin Part #S462, 2.930 in. length, included)
• Crown Volume: -4cc (flat top)
• Ring Grooves: 1/16, 1/16, 3/16 in. (rings sold separately, see ringset J100F8-4360-5)
• Deck Height (0 Deck at): 9.965 in. | Standard Deck Height: 9.980 in.
• Skirt Type: Slab Sided with ArmorGlide® coating
• Compression Ratio at 72cc chamber: 12.8:1
• Compression Ratio at 78cc chamber: 12.0:1
• Compression Ratio at 84cc chamber: 11.3:1
• Compression Ratio at 90cc chamber: 10.7:1

Key Features:

• 2618 High-Strength Alloy forged construction for superior tensile strength and heat resistance
• ArmorGlide® Skirt Coating for reduced friction, seizure resistance, and quieter operation
• Anti-detonation and pressure seal grooves machined into precision ring lands
• Forced pin oiling for enhanced wrist pin lubrication under high-load conditions
• Fully machined crown with optimized quench areas to resist detonation and pre-ignition
• Engineered and manufactured in the USA at Wiseco's Mentor, Ohio facility

Wiseco's Big Block Mopar flat top pistons are designed for street performance and race builds demanding proven durability. The -4cc dish volume and slab-sided skirt design make this set an ideal foundation for a stock-compression or mild performance Mopar build. Compatible with standard ring sets available separately (J100F8-4360-5).