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Engine Piston Set | KB408C.STD

  • •Coated skirts.
  • •See instructions for coated clearance.

KB MC Hyper Piston Kit - Harley Sportster 883 1986-08 +1.2cc Flat Top 9:1


Product Specifications
Sold As Piston & Ring Kit
Engine Manufacturer Harley Davidson
Engine Family Sportster 883 1986-Present
Eng. Disp. In. 54
Eng. Disp Liters 883
Year Range 1986-2018
Piston Material Cast 390 Hypereutectic Alloy
Bore (in) 3
Bore (mm) 76.2
Rod (in) 6.926
Stroke (in) 3.812
Rod (mm) 175.9204
Stroke (mm) 96.8
Oversized No
Oversize STD
Ring Pack 1.5mm, 1.5mm, 2.8mm
Top Land .270
Pin Number 0791x216K
Pin Type Floating
Pin Configuration Centered
Pin Diameter (in) .791
Pin Diameter (mm) 20.1
Lock RRN-81
Compression Height IN 1.21
Compression Height MM 30.7
Crown Type FLAT TOP
Crown (cc) +1.2cc
Intake Valve Depth/diameter .160/1.626
Exhaust Valve Depth/diameter .160/1.626
Alloy Cast 390 Hypereutectic Alloy
Compression Ratio 9.0:1 w/49cc
Oe Deck Height 5.375
Oversizes STD .010 .020 .030 .040
Includes Ring Set 25011.STD
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