S&S Cycle 99-06 BT 4in Bore 4in Stroke Cylinder Kit - Wrinkle Black w/ Highlight

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!

• Although not mandatory, we recommend adding an oil cooler to bikes ridden in warmer climates
• Complete kits include cylinders, pistons, gaskets, and instructions
• Bolts in. No machining, balancing, or splitting the crankcases
• Wrinkle black cylinders - matches stock finish
• Low friction Ductile Cast Iron liner
• 88" engines are boosted to 100"
• 10.5:1 Compression

Enhance your Harley Davidson motorcycle's performance with the S&S Cycle Part Number SSC910-0646. Designed for models including the Fat Boy, Night Train, Softail, and more from 2001 to 2002, this high-performance cylinder kit features a 4-inch bore and stroke, inspired by professional drag racing engines. The cylinders are constructed with a low friction ductile cast iron liner wrapped in cast aluminum, ensuring excellent thermal conductivity and durability for demanding riding conditions. The wrinkle black finish matches the stock aesthetic while adding a sleek, professional look to your bike. This bolt-in kit simplifies installation, requiring no machining, rebalancing, or engine removal, making it suitable for both experienced mechanics and DIY enthusiasts. Complete with cylinders, pistons, gaskets, and detailed instructions, this kit provides everything needed for a straightforward upgrade. The kit boosts the engine from 88 cubic inches to 100 cubic inches, increasing power and torque, with a compression ratio of 10.5:1 for optimal performance. Although not mandatory, adding an oil cooler is recommended for bikes operated in warmer climates to maintain optimal engine temperature and longevity. Suitable for applications where carburetor modification is acknowledged, this kit is a reliable choice for serious riders seeking a significant power upgrade without extensive engine modifications.

Features:

• Inspired by professional drag race engines for maximum performance

• Ductile cast iron liner wrapped in cast aluminum for thermal efficiency

• Bolt-in installation requires no machining, rebalancing, or engine removal

• Includes cylinders, pistons, gaskets, and installation instructions

• Wrinkle black finish matches stock styling

• Boosts engine capacity from 88" to 100" with a 4-inch bore and stroke

• Compression ratio of 10.5:1 for enhanced power output

• Suitable for 2001-2002 Harley Davidson models including Fat Boy, Night Train, and Softail series

Fitment:
Harley Davidson FLHR Road King Base 1999
Harley Davidson FLHR Road King Base 2000
Harley Davidson FLHR Road King Base 2001
Harley Davidson FLHR Road King Base 2002
Harley Davidson FLHR Road King Base 2003
Harley Davidson FLHR Road King Base 2004
Harley Davidson FLHR Road King Base 2005
Harley Davidson FLHR Road King Base 2006
Harley Davidson FLHRCI Road King Classic Base 1999
Harley Davidson FLHRCI Road King Classic Base 2000
Harley Davidson FLHRCI Road King Classic Base 2001
Harley Davidson FLHRCI Road King Classic Base 2002
Harley Davidson FLHRCI Road King Classic Base 2003
Harley Davidson FLHRCI Road King Classic Base 2004
Harley Davidson FLHRCI Road King Classic Base 2005
Harley Davidson FLHRCI Road King Classic Base 2006
Harley Davidson FLHRI Road King Base 2000
Harley Davidson FLHRI Road King Base 2001
Harley Davidson FLHRI Road King Base 2002
Harley Davidson FLHRI Road King Base 2003
Harley Davidson FLHRI Road King Base 2004
Harley Davidson FLHRI Road King Base 2005
Harley Davidson FLHRI Road King Base 2006
Harley Davidson FLHRS Road King Custom Base 2004
Harley Davidson FLHRS Road King Custom Base 2005
Harley Davidson FLHRS Road King Custom Base 2006
Harley Davidson FLHTC Electra Glide Classic Base 1999
Harley Davidson FLHTC Electra Glide Classic Base 2000
Harley Davidson FLHTC Electra Glide Classic Base 2001
Harley Davidson FLHTC Electra Glide Classic Base 2002
Harley Davidson FLHTC Electra Glide Classic Base 2003
Harley Davidson FLHTC Electra Glide Classic Base 2004
Harley Davidson FLHTC Electra Glide Classic Base 2005
Harley Davidson FLHTCI Electra Glide Classic Base 1999
Harley Davidson FLHTCI Electra Glide Classic Base 2000
Harley Davidson FLHTCI Electra Glide Classic Base 2001
Harley Davidson FLHTCI Electra Glide Classic Base 2002
Harley Davidson FLHTCI Electra Glide Classic Base 2003
Harley Davidson FLHTCI Electra Glide Classic Base 2004
Harley Davidson FLHTCI Electra Glide Classic Base 2005
Harley Davidson FLHTCI Electra Glide Classic Base 2006
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 1999
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2000
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2001
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2002
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2003
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2004
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2005
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 2006
Harley Davidson FLST Heritage Softail Base 2006
Harley Davidson FLSTC Heritage Softail Classic Base 1999
Harley Davidson FLSTC Heritage Softail Classic Base 2000
Harley Davidson FLSTC Heritage Softail Classic Base 2001
Harley Davidson FLSTC Heritage Softail Classic Base 2002
Harley Davidson FLSTC Heritage Softail Classic Base 2003
Harley Davidson FLSTC Heritage Softail Classic Base 2004
Harley Davidson FLSTC Heritage Softail Classic Base 2005
Harley Davidson FLSTC Heritage Softail Classic Base 2006
Harley Davidson FLSTCI Heritage Softail Classic Base 2001
Harley Davidson FLSTCI Heritage Softail Classic Base 2002
Harley Davidson FLSTCI Heritage Softail Classic Base 2003
Harley Davidson FLSTCI Heritage Softail Classic Base 2004
Harley Davidson FLSTCI Heritage Softail Classic Base 2005
Harley Davidson FLSTCI Heritage Softail Classic Base 2006
Harley Davidson FLSTF Fat Boy Base 1999
Harley Davidson FLSTF Fat Boy Base 2000
Harley Davidson FLSTF Fat Boy Base 2001
Harley Davidson FLSTF Fat Boy Base 2002
Harley Davidson FLSTF Fat Boy Base 2003
Harley Davidson FLSTF Fat Boy Base 2004
Harley Davidson FLSTF Fat Boy Base 2005
Harley Davidson FLSTF Fat Boy Base 2006
Harley Davidson FLSTFI Fat Boy Base 2001
Harley Davidson FLSTFI Fat Boy Base 2002
Harley Davidson FLSTFI Fat Boy Base 2003
Harley Davidson FLSTFI Fat Boy Base 2004
Harley Davidson FLSTFI Fat Boy Base 2005
Harley Davidson FLSTFI Fat Boy Base 2006
Harley Davidson FLTR Road Glide Base 1999
Harley Davidson FLTR Road Glide Base 2000
Harley Davidson FLTR Road Glide Base 2001
Harley Davidson FLTR Road Glide Base 2002
Harley Davidson FLTR Road Glide Base 2003
Harley Davidson FLTR Road Glide Base 2004
Harley Davidson FLTR Road Glide Base 2005
Harley Davidson FLTR Road Glide Base 2006
Harley Davidson FLTRI Road Glide Base 1999
Harley Davidson FLTRI Road Glide Base 2000
Harley Davidson FLTRI Road Glide Base 2001
Harley Davidson FLTRI Road Glide Base 2002
Harley Davidson FLTRI Road Glide Base 2003
Harley Davidson FLTRI Road Glide Base 2004
Harley Davidson FLTRI Road Glide Base 2005
Harley Davidson FLTRI Road Glide Base 2006
Harley Davidson FXD Dyna Super Glide Base 1999
Harley Davidson FXD Dyna Super Glide Base 2000
Harley Davidson FXD Dyna Super Glide Base 2001
Harley Davidson FXD Dyna Super Glide Base 2002
Harley Davidson FXD Dyna Super Glide Base 2003
Harley Davidson FXD Dyna Super Glide Base 2004
Harley Davidson FXD Dyna Super Glide Base 2005
Harley Davidson FXD Dyna Super Glide Base 2006
Harley Davidson FXDL Dyna Low Rider Base 1999
Harley Davidson FXDL Dyna Low Rider Base 2000
Harley Davidson FXDL Dyna Low Rider Base 2001
Harley Davidson FXDL Dyna Low Rider Base 2002
Harley Davidson FXDL Dyna Low Rider Base 2003
Harley Davidson FXDL Dyna Low Rider Base 2004
Harley Davidson FXDL Dyna Low Rider Base 2005
Harley Davidson FXDLI Dyna Low Rider Base 2004
Harley Davidson FXDLI Dyna Low Rider Base 2005
Harley Davidson FXDLI Dyna Low Rider Base 2006
Harley Davidson FXDWG Dyna Wide Glide Base 1999
Harley Davidson FXDWG Dyna Wide Glide Base 2000
Harley Davidson FXDWG Dyna Wide Glide Base 2001
Harley Davidson FXDWG Dyna Wide Glide Base 2002
Harley Davidson FXDWG Dyna Wide Glide Base 2003
Harley Davidson FXDWG Dyna Wide Glide Base 2004
Harley Davidson FXDWG Dyna Wide Glide Base 2005
Harley Davidson FXDWG Dyna Wide Glide Base 2006
Harley Davidson FXDWGI Dyna Wide Glide Base 2004
Harley Davidson FXDWGI Dyna Wide Glide Base 2005
Harley Davidson FXDWGI Dyna Wide Glide Base 2006
Harley Davidson FXDX Dyna Super Glide Sport Base 1999
Harley Davidson FXDX Dyna Super Glide Sport Base 2000
Harley Davidson FXDX Dyna Super Glide Sport Base 2001
Harley Davidson FXDX Dyna Super Glide Sport Base 2002
Harley Davidson FXDX Dyna Super Glide Sport Base 2003
Harley Davidson FXDX Dyna Super Glide Sport Base 2004
Harley Davidson FXDX Dyna Super Glide Sport Base 2005
Harley Davidson FXDXT Dyna Super Glide T-Sport Base 2001
Harley Davidson FXDXT Dyna Super Glide T-Sport Base 2002
Harley Davidson FXDXT Dyna Super Glide T-Sport Base 2003
Harley Davidson FXSTB Night Train Base 1999
Harley Davidson FXSTB Night Train Base 2000
Harley Davidson FXSTB Night Train Base 2001
Harley Davidson FXSTB Night Train Base 2002
Harley Davidson FXSTB Night Train Base 2003
Harley Davidson FXSTB Night Train Base 2004
Harley Davidson FXSTB Night Train Base 2005
Harley Davidson FXSTB Night Train Base 2006
Harley Davidson FXSTBI Night Train Base 2001
Harley Davidson FXSTBI Night Train Base 2002
Harley Davidson FXSTBI Night Train Base 2003
Harley Davidson FXSTBI Night Train Base 2004
Harley Davidson FXSTBI Night Train Base 2005
Harley Davidson FXSTBI Night Train Base 2006
Harley Davidson FXSTD Softail Deuce Base 2000
Harley Davidson FXSTD Softail Deuce Base 2001
Harley Davidson FXSTD Softail Deuce Base 2002
Harley Davidson FXSTD Softail Deuce Base 2003
Harley Davidson FXSTD Softail Deuce Base 2004
Harley Davidson FXSTD Softail Deuce Base 2005
Harley Davidson FXSTD Softail Deuce Base 2006
Harley Davidson FXSTDI Softail Deuce Base 2001
Harley Davidson FXSTDI Softail Deuce Base 2002
Harley Davidson FXSTDI Softail Deuce Base 2003
Harley Davidson FXSTDI Softail Deuce Base 2004
Harley Davidson FXSTDI Softail Deuce Base 2005
Harley Davidson FXSTDI Softail Deuce Base 2006
Harley Davidson FXSTDSE Screamin Eagle Softail Deuce Base 2003
Harley Davidson FXSTDSE Screamin Eagle Softail Deuce Base 2004
Harley Davidson FXSTI Softail Standard Base 2001
Harley Davidson FXSTI Softail Standard Base 2002
Harley Davidson FXSTI Softail Standard Base 2003
Harley Davidson FXSTI Softail Standard Base 2004
Harley Davidson FXSTI Softail Standard Base 2005
Harley Davidson FXSTI Softail Standard Base 2006
Harley Davidson FXSTS Springer Softail Base 1999
Harley Davidson FXSTS Springer Softail Base 2000
Harley Davidson FXSTS Springer Softail Base 2001
Harley Davidson FXSTS Springer Softail Base 2002
Harley Davidson FXSTS Springer Softail Base 2003
Harley Davidson FXSTS Springer Softail Base 2004
Harley Davidson FXSTS Springer Softail Base 2005
Harley Davidson FXSTS Springer Softail Base 2006
Harley Davidson FXSTSI Springer Softail Base 2001
Harley Davidson FXSTSI Springer Softail Base 2002
Harley Davidson FXSTSI Springer Softail Base 2003
Harley Davidson FXSTSI Springer Softail Base 2004
Harley Davidson FXSTSI Springer Softail Base 2005
Harley Davidson FXSTSI Springer Softail Base 2006