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Engines and Components› Pistons and Piston Rings

KB PERFORMANCE PISTONS

SBM Flat Top Piston Set 4.070 Bore -6cc

$580.95 $466.86 Save $114.09

SKU: K02K KB243.030

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The KB PERFORMANCE PISTONS KB243.030 are hypereutectic flat top pistons with a 4.070" bore, designed for Chrysler 340ci engines. They are compatible with a 6.123" connecting rod and 3.310" crank stroke. The pistons feature a -6cc 2V relief and are made from Hypereutectic 390 alloy. The piston weighs 597 grams and the wrist pin weighs 132 grams.

Fitment

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Specifications

BrandKB PERFORMANCE PISTONS
Part NumberK02K KB243.030

Videos

Engine Failure!? Watch if you are running Hypereutectic pistons!

Engine Failure!? Watch if you are running Hypereutectic pistons!
KB Pistons and Ring End Gap

KB Pistons and Ring End Gap
Keith Black Hypereutectic Piston Info (Ring End Gap)

Keith Black Hypereutectic Piston Info (Ring End Gap)
DISASTER WAITING TO HAPPEN?? The DANGERS of Hypereutectic Pistons! Think BEFORE You BUY!

DISASTER WAITING TO HAPPEN?? The DANGERS of Hypereutectic Pistons! Think BEFORE You BUY!
How to Install Pistons | Fast and Easy

How to Install Pistons | Fast and Easy
AFR MOPAR 340 HEAD TEST! THE ENGINE MASTER HIMSELF, STEVE DULCICH & I COMPARED AFR VS IRON 360 HEADS

AFR MOPAR 340 HEAD TEST! THE ENGINE MASTER HIMSELF, STEVE DULCICH & I COMPARED AFR VS IRON 360 HEADS
The Shocking Truth About Chrysler’s 340 V8 Engine– Small in Size, Big in Power!

The Shocking Truth About Chrysler’s 340 V8 Engine– Small in Size, Big in Power!
Chrysler's Unknown Race Weapon - The Ultimate 340 Is This Modified R Block From Mopar Performance

Chrysler's Unknown Race Weapon - The Ultimate 340 Is This Modified R Block From Mopar Performance
Installing a Piston and Rod Assembly

Installing a Piston and Rod Assembly

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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