KB HYPEREUTECTIC SERIES PISTONS - KB-122-30


Part #: KB-122-30
Temporarily out of stock. Available for backorder.
Price $439.99
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Product Description

4.030" Bore x 3.750" Stroke, 6.0" Rod

  • Application: SBC 383
  • Style: Flat Top w/ 2 Valve Relief
  • Comp. Height: 1.130"
  • Crown Volume: 7cc
  • C/R 64cc: 10.9
  • C/R 76cc: 9.6
  • Gram Weight: 441/145
  • Pin Size: .927" x 3.000"
  • Rings: 1/16", 1/16", 3/16"

KB 2 Valve Relief Flat Hypereutectic pistons are 390 alloy heat treated to T-5. Valve pockets and domes are fully machined and come with top land mini groves and second land accumulator grove. The low expansion rate and heat reflective properties allow for a tight running clearances increasing HP. All Hyper pistons can be used with pressed fit or floating pin rods. Ring pack B.