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Kb Performance

KB Performance #KB576LCA.STD - Piston Kit - 4.250" Standard - 11.4:1 CR - 124" Big Bore - 107" M8

Part #: 0910-6177
From $379.91
KB Performance #KB576LCA.STD - Piston Kit - 4.250" Standard - 11.4:1 CR - 124" Big Bore - 107" M8—
$379.91

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Description

Piston Kit - 4.250" Standard - 11.4:1 CR - 124" Big Bore - 107" M8

Features

  • Valve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves
  • Type 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels
  • Type 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on
  • OE-style round wire locks are easily installed
  • Heavy-duty wrist pins with true 0.9270” diameter to fit rods correctly
  • Line2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation
  • Kit includes pistons, rings, pins and locks
  • Requires 4.250" bore cylinder sold separately.

Specs

Stroke Length4.375"
StyleForged
UnitsKit
ModelSuper Duty
Product NamePiston Kit
Compression Ratio11.4:1
Piston Head ShapeDomed
Displacement124"
Piston Material4032 Aluminum Alloy
Bore Size4.250"
TypeBig Bore
Bore - OversizeStandard
Riding StyleStreet
KB Performance #KB576LCA.STD - Piston Kit - 4.250" Standard - 11.4:1 CR - 124" Big Bore - 107" M8 | Direct Cycle Parts