S&S 4.0" Big Bore Big Twin Bolt-In Black Cylinder & Piston Kit (910-0646)
S&S 4.0" Big Bore Big Twin Bolt-In Black Cylinder & Piston Kit (910-0646)

S&S 4.0" Big Bore Big Twin Bolt-In Black Cylinder & Piston Kit (910-0646)

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$1,633.41
$1,259.99
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Description  
  • Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance
  • Bolt-in kits do not require machining, rebalancing or engine removal, and include just about everything you'll need to complete the installation
  • The biggest cylinder bore that can be installed in a stock crankcase without machining!
  • 4" stroke
  • 4.937" cylinder length
  • 8.75 pop up dome volume
  • Forged pistons
  • Low friction Ductile Cast Iron liner
  • For 100" sidewinder motors
  • 10.5:1 Compression (w/stock 85cc heads)
  • Bolts in. No machining, balancing, or splitting the crankcases
  • 88" engines are boosted to 100"
  • Complete kits include cylinders, pistons, gaskets, and instructions
  • Wrinkle black cylinders - matches stock finish
  • Although not mandatory, we recommend adding an oil cooler to bikes ridden in warmer climates
  • For 1999-'06 big twin models
Compatible Vehicles
Years Make Make Notes
1999-2000 Harley-Davidson Dyna Convertible FXDS-Conv
2004-2005 Harley-Davidson Dyna Low Rider EFI FXDLI
1999-2005 Harley-Davidson Dyna Low Rider FXDL
2005 Harley-Davidson Dyna Super Glide Custom EFI FXDCI
2005 Harley-Davidson Dyna Super Glide Custom FXDC
2004-2005 Harley-Davidson Dyna Super Glide EFI FXDI
1999-2005 Harley-Davidson Dyna Super Glide FXD
2004-2005 Harley-Davidson Dyna Super Glide Sport EFI FXDXI
1999-2005 Harley-Davidson Dyna Super Glide Sport FXDX
2001-2003 Harley-Davidson Dyna Super Glide T-Sport FXDX-T
2004-2005 Harley-Davidson Dyna Wide Glide EFI FXDWGI
1999-2005 Harley-Davidson Dyna Wide Glide FXDWG
2001 Harley-Davidson Dyna Wide Glide Screamin Eagle FXDWG2
2002 Harley-Davidson Dyna Wide Glide Screamin Eagle FXDWG3
1999-2006 Harley-Davidson Electra Glide Classic EFI FLHTCI
1999-2005 Harley-Davidson Electra Glide Classic FLHTC
2003-2006 Harley-Davidson Electra Glide EFI FLHTI
1999-2006 Harley-Davidson Electra Glide FLHT
1999-2006 Harley-Davidson Electra Glide Ultra Classic EFI FLHTCUI
2001-2006 Harley-Davidson Fat Boy EFI FLSTFI
1999-2006 Harley-Davidson Fat Boy FLSTF
2001-2006 Harley-Davidson Heritage Softail Classic EFI FLSTCI
1999-2006 Harley-Davidson Heritage Softail Classic FLSTC
2006 Harley-Davidson Heritage Softail EFI FLSTI
2006 Harley-Davidson Heritage Softail FLST
2001-2003 Harley-Davidson Heritage Springer EFI FLSTSI
1999-2003 Harley-Davidson Heritage Springer FLSTS
2001-2006 Harley-Davidson Night Train EFI FXSTBI
1999-2006 Harley-Davidson Night Train FXSTB
1999-2006 Harley-Davidson Road Glide EFI FLTRI
1999-2002 Harley-Davidson Road Glide FLTR
1999-2006 Harley-Davidson Road King Classic EFI FLHRCI
2004-2006 Harley-Davidson Road King Custom EFI FLHRSI
2004-2006 Harley-Davidson Road King Custom FLHRS
2000-2006 Harley-Davidson Road King EFI FLHRI
1999-2006 Harley-Davidson Road King FLHR
1999 Harley-Davidson Softail Custom FXSTC
2005-2006 Harley-Davidson Softail Deluxe EFI FLSTNI
2005-2006 Harley-Davidson Softail Deluxe FLSTN
2001-2006 Harley-Davidson Softail Deuce EFI FXSTDI
2000-2006 Harley-Davidson Softail Deuce FXSTD
2005-2006 Harley-Davidson Softail Springer Classic EFI FLSTSCI
2005-2006 Harley-Davidson Softail Springer Classic FLSTSC
2001-2006 Harley-Davidson Softail Springer EFI FXSTSI
1999-2006 Harley-Davidson Softail Springer FXSTS
2001-2006 Harley-Davidson Softail Standard EFI FXSTI
1999-2006 Harley-Davidson Softail Standard FXST

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