Twin Power 89-06 Big Twin 1/4" Jackshaft w/ 10-32 Thread — Exc. 06 Dyna

SKU: TWP413208
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About TwinPower

TwinPower engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full TwinPower lineup with fast shipping and expert fitment support — order with confidence.

Twin Power 1/4" Jackshaft for Harley Big Twins (1989-2006)

Ensure proper starter engagement with this high-quality Twin Power 1/4" Jackshaft, specifically designed for Harley-Davidson Big Twin models from 1989 to 2006 (excluding 2006 Dyna models). This jackshaft features a 10-32 thread, providing a secure and reliable connection for your starter system.

Product Details:

  • Compatibility: Fits 1989-2006 Harley-Davidson Big Twin engines, with the exception of 2006 Dyna models.
  • Thread Size: Equipped with a 10-32 thread for secure mounting.
  • Diameter: 1/4 inch shaft diameter.
  • Durable Construction: Manufactured from robust materials to withstand the rigors of engine starting and operation.
  • Direct Replacement: Designed as a reliable replacement for worn or damaged original equipment jackshafts.

Why Choose Twin Power?

Twin Power is dedicated to providing high-performance, reliable aftermarket parts for Harley-Davidson motorcycles. This jackshaft is built to last, ensuring consistent starting performance for your ride. Whether you're performing routine maintenance or a complete engine rebuild, this component is crucial for a functional starter system.

Don't let a faulty jackshaft leave you stranded. Upgrade to the dependable quality of Twin Power. Find this essential starter component and more at GGCRACING!

Vehicle Fitment

Years Make Model Trim
1994-2006 Harley-Davidson FLHR Road King Base
1998-2006 Harley-Davidson FLHRCI Road King Classic Base
1996-1997 Harley-Davidson FLHRI Road King Base
2000-2006 Harley-Davidson FLHRI Road King Base
2004-2006 Harley-Davidson FLHRS Road King Custom Base
2004-2006 Harley-Davidson FLHRSI Road King Custom Base
1989-1993 Harley-Davidson FLHS Electra Glide Sport Base
1989-2006 Harley-Davidson FLHT Electra Glide Standard Base
1989-2005 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2000-2004 Harley-Davidson FLHTCSE Screamin Eagle Electra Glide Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1995-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2006 Harley-Davidson FLHX Street Glide Base
2006 Harley-Davidson FLHXI Street Glide Base
1989-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base
1989-2006 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2006 Harley-Davidson FLSTCI Heritage Softail Classic Base
1990-2006 Harley-Davidson FLSTF Fat Boy Base
2001-2006 Harley-Davidson FLSTFI Fat Boy Base
1993 Harley-Davidson FLSTN Heritage Softail Nostalgia Base
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
1998-2006 Harley-Davidson FLTR Road Glide Base
1998-2006 Harley-Davidson FLTRI Road Glide Base
1995-2005 Harley-Davidson FXD Dyna Super Glide Base
2004-2005 Harley-Davidson FXDI Dyna Super Glide Base
1993-2005 Harley-Davidson FXDL Dyna Low Rider Base
2004-2005 Harley-Davidson FXDLI Dyna Low Rider Base
1993-2005 Harley-Davidson FXDWG Dyna Wide Glide Base
2004-2005 Harley-Davidson FXDWGI Dyna Wide Glide Base
1999-2005 Harley-Davidson FXDX Dyna Super Glide Sport Base
2001-2003 Harley-Davidson FXDXT Dyna Super Glide T-Sport Base
1989-1994 Harley-Davidson FXLR Low Rider Custom Base
1999 Harley-Davidson FXR2 Base
1999 Harley-Davidson FXR3 Base
2000 Harley-Davidson FXR4 Base
1989-1992 Harley-Davidson FXRS Low Glide Base
1989-1993 Harley-Davidson FXRS-SP Low Rider Sport Base
1989-1992 Harley-Davidson FXRT Sport Glide Base
1999-2006 Harley-Davidson FXSTB Night Train Base
2001-2006 Harley-Davidson FXSTBI Night Train Base
1989-1999 Harley-Davidson FXSTC Softail Custom Base
2000-2006 Harley-Davidson FXSTD Softail Deuce Base
2001-2006 Harley-Davidson FXSTDI Softail Deuce Base
2001-2006 Harley-Davidson FXSTI Softail Standard Base
1989-2006 Harley-Davidson FXSTS Springer Softail Base
1995-1997 Harley-Davidson FXSTSB Bad Boy Base
2001-2006 Harley-Davidson FXSTSI Springer Softail Base

Product Details

Product Description
Part Numbers
Sizing & Fit

About TwinPower

TwinPower engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full TwinPower lineup with fast shipping and expert fitment support — order with confidence.

Twin Power 1/4" Jackshaft for Harley Big Twins (1989-2006)

Ensure proper starter engagement with this high-quality Twin Power 1/4" Jackshaft, specifically designed for Harley-Davidson Big Twin models from 1989 to 2006 (excluding 2006 Dyna models). This jackshaft features a 10-32 thread, providing a secure and reliable connection for your starter system.

Product Details:

  • Compatibility: Fits 1989-2006 Harley-Davidson Big Twin engines, with the exception of 2006 Dyna models.
  • Thread Size: Equipped with a 10-32 thread for secure mounting.
  • Diameter: 1/4 inch shaft diameter.
  • Durable Construction: Manufactured from robust materials to withstand the rigors of engine starting and operation.
  • Direct Replacement: Designed as a reliable replacement for worn or damaged original equipment jackshafts.

Why Choose Twin Power?

Twin Power is dedicated to providing high-performance, reliable aftermarket parts for Harley-Davidson motorcycles. This jackshaft is built to last, ensuring consistent starting performance for your ride. Whether you're performing routine maintenance or a complete engine rebuild, this component is crucial for a functional starter system.

Don't let a faulty jackshaft leave you stranded. Upgrade to the dependable quality of Twin Power. Find this essential starter component and more at GGCRACING!

Vehicle Fitment

Years Make Model Trim
1994-2006 Harley-Davidson FLHR Road King Base
1998-2006 Harley-Davidson FLHRCI Road King Classic Base
1996-1997 Harley-Davidson FLHRI Road King Base
2000-2006 Harley-Davidson FLHRI Road King Base
2004-2006 Harley-Davidson FLHRS Road King Custom Base
2004-2006 Harley-Davidson FLHRSI Road King Custom Base
1989-1993 Harley-Davidson FLHS Electra Glide Sport Base
1989-2006 Harley-Davidson FLHT Electra Glide Standard Base
1989-2005 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2000-2004 Harley-Davidson FLHTCSE Screamin Eagle Electra Glide Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1995-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2006 Harley-Davidson FLHX Street Glide Base
2006 Harley-Davidson FLHXI Street Glide Base
1989-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base
1989-2006 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2006 Harley-Davidson FLSTCI Heritage Softail Classic Base
1990-2006 Harley-Davidson FLSTF Fat Boy Base
2001-2006 Harley-Davidson FLSTFI Fat Boy Base
1993 Harley-Davidson FLSTN Heritage Softail Nostalgia Base
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
1998-2006 Harley-Davidson FLTR Road Glide Base
1998-2006 Harley-Davidson FLTRI Road Glide Base
1995-2005 Harley-Davidson FXD Dyna Super Glide Base
2004-2005 Harley-Davidson FXDI Dyna Super Glide Base
1993-2005 Harley-Davidson FXDL Dyna Low Rider Base
2004-2005 Harley-Davidson FXDLI Dyna Low Rider Base
1993-2005 Harley-Davidson FXDWG Dyna Wide Glide Base
2004-2005 Harley-Davidson FXDWGI Dyna Wide Glide Base
1999-2005 Harley-Davidson FXDX Dyna Super Glide Sport Base
2001-2003 Harley-Davidson FXDXT Dyna Super Glide T-Sport Base
1989-1994 Harley-Davidson FXLR Low Rider Custom Base
1999 Harley-Davidson FXR2 Base
1999 Harley-Davidson FXR3 Base
2000 Harley-Davidson FXR4 Base
1989-1992 Harley-Davidson FXRS Low Glide Base
1989-1993 Harley-Davidson FXRS-SP Low Rider Sport Base
1989-1992 Harley-Davidson FXRT Sport Glide Base
1999-2006 Harley-Davidson FXSTB Night Train Base
2001-2006 Harley-Davidson FXSTBI Night Train Base
1989-1999 Harley-Davidson FXSTC Softail Custom Base
2000-2006 Harley-Davidson FXSTD Softail Deuce Base
2001-2006 Harley-Davidson FXSTDI Softail Deuce Base
2001-2006 Harley-Davidson FXSTI Softail Standard Base
1989-2006 Harley-Davidson FXSTS Springer Softail Base
1995-1997 Harley-Davidson FXSTSB Bad Boy Base
2001-2006 Harley-Davidson FXSTSI Springer Softail Base

Product Details

Product Description

About TwinPower

TwinPower engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full TwinPower lineup with fast shipping and expert fitment support — order with confidence.

Twin Power 1/4" Jackshaft for Harley Big Twins (1989-2006)

Ensure proper starter engagement with this high-quality Twin Power 1/4" Jackshaft, specifically designed for Harley-Davidson Big Twin models from 1989 to 2006 (excluding 2006 Dyna models). This jackshaft features a 10-32 thread, providing a secure and reliable connection for your starter system.

Product Details:

  • Compatibility: Fits 1989-2006 Harley-Davidson Big Twin engines, with the exception of 2006 Dyna models.
  • Thread Size: Equipped with a 10-32 thread for secure mounting.
  • Diameter: 1/4 inch shaft diameter.
  • Durable Construction: Manufactured from robust materials to withstand the rigors of engine starting and operation.
  • Direct Replacement: Designed as a reliable replacement for worn or damaged original equipment jackshafts.

Why Choose Twin Power?

Twin Power is dedicated to providing high-performance, reliable aftermarket parts for Harley-Davidson motorcycles. This jackshaft is built to last, ensuring consistent starting performance for your ride. Whether you're performing routine maintenance or a complete engine rebuild, this component is crucial for a functional starter system.

Don't let a faulty jackshaft leave you stranded. Upgrade to the dependable quality of Twin Power. Find this essential starter component and more at GGCRACING!

Vehicle Fitment

Years Make Model Trim
1994-2006 Harley-Davidson FLHR Road King Base
1998-2006 Harley-Davidson FLHRCI Road King Classic Base
1996-1997 Harley-Davidson FLHRI Road King Base
2000-2006 Harley-Davidson FLHRI Road King Base
2004-2006 Harley-Davidson FLHRS Road King Custom Base
2004-2006 Harley-Davidson FLHRSI Road King Custom Base
1989-1993 Harley-Davidson FLHS Electra Glide Sport Base
1989-2006 Harley-Davidson FLHT Electra Glide Standard Base
1989-2005 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2000-2004 Harley-Davidson FLHTCSE Screamin Eagle Electra Glide Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1995-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2006 Harley-Davidson FLHX Street Glide Base
2006 Harley-Davidson FLHXI Street Glide Base
1989-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base
1989-2006 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2006 Harley-Davidson FLSTCI Heritage Softail Classic Base
1990-2006 Harley-Davidson FLSTF Fat Boy Base
2001-2006 Harley-Davidson FLSTFI Fat Boy Base
1993 Harley-Davidson FLSTN Heritage Softail Nostalgia Base
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
1998-2006 Harley-Davidson FLTR Road Glide Base
1998-2006 Harley-Davidson FLTRI Road Glide Base
1995-2005 Harley-Davidson FXD Dyna Super Glide Base
2004-2005 Harley-Davidson FXDI Dyna Super Glide Base
1993-2005 Harley-Davidson FXDL Dyna Low Rider Base
2004-2005 Harley-Davidson FXDLI Dyna Low Rider Base
1993-2005 Harley-Davidson FXDWG Dyna Wide Glide Base
2004-2005 Harley-Davidson FXDWGI Dyna Wide Glide Base
1999-2005 Harley-Davidson FXDX Dyna Super Glide Sport Base
2001-2003 Harley-Davidson FXDXT Dyna Super Glide T-Sport Base
1989-1994 Harley-Davidson FXLR Low Rider Custom Base
1999 Harley-Davidson FXR2 Base
1999 Harley-Davidson FXR3 Base
2000 Harley-Davidson FXR4 Base
1989-1992 Harley-Davidson FXRS Low Glide Base
1989-1993 Harley-Davidson FXRS-SP Low Rider Sport Base
1989-1992 Harley-Davidson FXRT Sport Glide Base
1999-2006 Harley-Davidson FXSTB Night Train Base
2001-2006 Harley-Davidson FXSTBI Night Train Base
1989-1999 Harley-Davidson FXSTC Softail Custom Base
2000-2006 Harley-Davidson FXSTD Softail Deuce Base
2001-2006 Harley-Davidson FXSTDI Softail Deuce Base
2001-2006 Harley-Davidson FXSTI Softail Standard Base
1989-2006 Harley-Davidson FXSTS Springer Softail Base
1995-1997 Harley-Davidson FXSTSB Bad Boy Base
2001-2006 Harley-Davidson FXSTSI Springer Softail Base

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