Silvo-Lite KB130KTD.040 KB Hypereutectic Piston Kit SBC 400 +.040 Dish Top

The Silvo-Lite KB130KTD.040 is a complete KB Series hypereutectic piston kit designed for the Small Block Chevrolet (SBC) 400 engine at a +0.040" oversize bore (4.165"). This kit features a dish (D-Cup) head design, making it a reliable choice for rebuilds targeting stock-equivalent or mild compression ratios.

Manufactured by United Engine & Machine (UEM) under the KB Performance Pistons line, these hypereutectic pistons are cast from a 390 high-silicon aluminum alloy and T-6 heat treated for superior strength, improved scuff resistance, and excellent crown durability under high operating temperatures.

Key Features:

• 390 Alloy / 16% Silicon hypereutectic construction for improved wear resistance
• T-6 heat treated for enhanced hardness and structural integrity
• Dish (D-Cup) head design for controlled compression ratio
• +0.040" oversize — 4.165" bore diameter for the SBC 400
• 3.750" stroke compatibility
• Improved ring groove wear resistance and crown crack resistance
• Diamond-finished skirts for precise fitment and reduced friction
• Sold as a complete kit of 8 pistons with wrist pins (rings sold separately)

Silvo-Lite has been producing high-quality OE-style and performance replacement pistons for over 100 years under the UEM brand. Every step of the manufacturing process — from alloying the aluminum to diamond machining and anodizing — is performed in-house. These pistons are an excellent solution for engine rebuilds requiring a durable, precision-fit hypereutectic piston at an accessible price point.

Note: Piston rings are not included. Replace pistons in full sets only.