Brand

Engine Piston Set | KB263.080

  • •Hypereutectic.
  • • Centered pin.
  • • Includes lockring, pin, & ring set.
  • • 9.0:1 at zero deck clearance.
  • • 7.8:1 at -.085" deck clearance.

KB Hyper Knuckle Pan Shovel Hemi-Dome -42.3cc, 74ci FL,FLH,FX 1941-79 Rod-7.440


Product Specifications

Sold As Piston & Ring Kit
Engine Manufacturer Harley Davidson
Engine Family Knuckle, Pan, Shovelhead 74"
Eng. Disp. In. 74
Eng. Disp Liters 1200
Year Range 1941-1979
Piston Material Cast 390 Hypereutectic Alloy
Bore Diameter MM 87.3
Bore (in) 3.437
Bore (mm) 87.3
Rod (in) 7.44
Stroke (in) 3.969
Rod (mm) 188.976
Stroke (mm) 100.8
Oversized Yes
Oversize .080
Ring Pack 1/16, 1/16, 3/16
Top Land .205
Pin Number 0792x216K
Pin Type Floating
Pin Configuration Centered
Pin Diameter (in) .792
Pin Diameter (mm) 20.1
Lock RRN-81
Compression Height IN 1.45
Compression Height MM 36.8
Crown Type HEMI DOME
Crown (cc) -42.3cc
Intake Valve Depth/diameter 2.060
Exhaust Valve Depth/diameter 2.060
Alloy Cast 390 Hypereutectic Alloy
Compression Ratio 8.0:1 w/112cc 7.8:1 w/112cc
Oe Deck Height 5.375
Oversizes STD .005 .010 .020 .030 .040 .050 .060 .070 .080
Includes Ring Set 25012.080
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