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Keith Black Performance Hypereutectic Piston Kit, 3.875" Bore, 10:1

J&P Cycles Part Number: 744-382

Manufacturer Part Number: KB409C-STD

$202.99

Gold Club Price: $182.69

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Important Fitment Note

Also fits 2007-13 96" models converted to a 103" big Bore kit.

Description

Description for Keith Black Performance Hypereutectic Piston Kit, 3.875" Bore, 10:1

• Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy

• Allow a tighter fit, longer piston and ring life

• Diamond-machined pistons are held to plus or minus on gram weight and less than .005" tolerances between pistons

• Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings

• Replacement piston rings and pin lock rings available separately

• These pistons can be installed tighter than other pistons, resulting in less piston rock and better ring seal.

• Special attention is required to the top ring end gap, refer to instructions for correct piston and ring installation

Product Specs

Product Specs for Keith Black Performance Hypereutectic Piston Kit, 3.875" Bore, 10:1

Bore or Stroke:
3.875"
Compression Ratio:
10:1
Cylinder Bore Size:
3.875″
Dimension Oversize:
Standard
Displacement Size CC:
1690cc
Displacement Size CI:
103ci
Manufacturer Part Number:
KB409C-STD
Material:
Aluminum
Overall Size:
Standard
Sold in Units:
Kit
Style:
Forged
Warehouse Part Number:
1096342
Fitment
Fitment Note:

Also fits 2007-13 96" models converted to a 103" big Bore kit.

Fitment Questions?

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Compatible Models

Harley-Davidson® Models

  • Dyna Fat Bob FXDF : 2012–2014
  • Dyna Low Rider FXDL : 2012–2015
  • Dyna Street Bob FXDB : 2014–2015
  • Dyna Street Bob FXDBB : 2015
  • Dyna Street Bob FXDBP : 2014–2015
  • Dyna Super Glide Custom FXDC : 2014
  • Dyna Switchback FLD : 2012–2015
  • Dyna Wide Glide FXDWG : 2012–2015
  • Softail Blackline FXS : 2012–2013
  • Softail Breakout FXSB : 2013–2015
  • Softail Deluxe FLSTN : 2012–2015
  • Softail Fat Boy Anniversary FLSTF : 2013
  • Softail Fat Boy FLSTF : 2012–2015
  • Softail Fat Boy Lo Anniversary FLSTFB : 2013
  • Softail Fat Boy Lo FLSTFB : 2012–2015
  • Softail Heritage Classic Anniversary FLSTC : 2013
  • Softail Heritage Classic FLSTC : 2012–2015
  • Softail Slim FLS : 2012–2015
  • Softail Standard FXST : 2012–2015
  • Touring Electra Glide Classic FLHTC : 2012–2013
  • Touring Electra Glide Police FLHTP : 2012–2015
  • Touring Electra Glide Ultra Classic FLHTCU : 2012–2015
  • Touring Electra Glide Ultra Classic Low FLHTCUL : 2015
  • Touring Road Glide Custom FLTRX : 2012–2013
  • Touring Road Glide FLTRX : 2015
  • Touring Road Glide Special FLTRXS : 2015
  • Touring Road Glide Ultra FLTRU : 2012–2013
  • Touring Road King Classic FLHRC : 2012–2015
  • Touring Road King FLHR : 2012–2015
  • Touring Road King FLHR Anniversary : 2013
  • Touring Road King Police FLHP : 2012–2015
  • Touring Street Glide FLHX : 2012–2015
  • Touring Street Glide Special FLHXS : 2014–2015
  • Touring Ultra Limited Anniversary FLHTK : 2013
  • Touring Ultra Limited FLHTK : 2012–2015
  • Touring Ultra Limited Low FLHTKL : 2015
  • Trike Freewheeler FLRT : 2015
  • Trike Tri Glide Ultra Classic FLHTCUTG : 2012–2015
Customer Reviews

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