Twin Power L84-06 5 Speed Big Twin Mainshaft Bearing — Replaces H-D 8996A

SKU: TWP602208
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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.

Superior Performance for Your Harley-Davidson 5-Speed Transmission

Maintain the smooth operation and reliability of your Harley-Davidson Big Twin's 5-speed transmission with the Twin Power Mainshaft Bearing. Designed for models from 1984 to 2006 (excluding 6-speed Dyna models), this bearing is a direct replacement for Harley-Davidson part number 8996A, offering exceptional quality and durability.

Key Features and Benefits:

  • Precision Fitment: Engineered to perfectly replace H-D 8996A, ensuring compatibility with a wide array of 5-speed Big Twin transmissions.
  • Enhanced Durability: Constructed from high-quality materials to withstand the rigors of daily riding and demanding conditions, ensuring long service life.
  • Smooth Shifting: Promotes reduced friction and wear within the transmission, contributing to smoother gear changes and overall drivetrain efficiency.
  • Extensive Application: Fits numerous Harley-Davidson models including Electra Glide, Road King, Heritage Softail, Fat Boy, and FXR series from 1984 through 2006.
  • Reliable Replacement: An ideal choice for routine maintenance, repairs, or upgrades, ensuring your transmission performs at its best.

This Twin Power mainshaft bearing is critical for maintaining the integrity of your transmission. By ensuring proper shaft alignment and reducing rotational resistance, it helps prevent premature wear on other transmission components. Whether you're a seasoned mechanic or a dedicated DIYer, this part offers the quality and reliability you expect for your Harley-Davidson.

Keep your ride running smoothly. Get the Twin Power 5-Speed Big Twin Mainshaft Bearing at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1997-2006 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
2002 Harley-Davidson FLHRSEI Screamin Eagle Road King Base
2003 Harley-Davidson FLHRSEI2 Screamin Eagle Road King 2 Base
1984 Harley-Davidson FLHS Electra Glide Sport Base
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1995-2006 Harley-Davidson FLHT Electra Glide Standard Base
1984-2005 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1995-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2003-2006 Harley-Davidson FLHTI Electra Glide Standard Base
2006 Harley-Davidson FLHX Street Glide Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base
1988-2006 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
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
2005-2006 Harley-Davidson FLSTN Softail Deluxe Base
1997-2006 Harley-Davidson FLSTS Heritage Springer Base
2005-2006 Harley-Davidson FLSTSC Softail Springer Classic Base
2001-2003 Harley-Davidson FLSTSI Heritage Springer Base
1996 Harley-Davidson FLTCUI Tour Glide Ultra Classic Base
1998-2006 Harley-Davidson FLTR Road Glide Base
1998-2006 Harley-Davidson FLTRI Road Glide Base
1995-2006 Harley-Davidson FXD Dyna Super Glide Base
2006 Harley-Davidson FXDBI Street Bob Base
1992 Harley-Davidson FXDC Super Glide Custom Base
2005 Harley-Davidson FXDC Super Glide Custom Base
2005-2006 Harley-Davidson FXDCI Super Glide Custom Base
2006 Harley-Davidson FXDI Dyna Super Glide Base
1993-2005 Harley-Davidson FXDL Dyna Low Rider Base
2004-2006 Harley-Davidson FXDLI Dyna Low Rider Base
1994-2000 Harley-Davidson FXDS-Conv Dyna Convertible Base
1993-2006 Harley-Davidson FXDWG Dyna Wide Glide Base
2001 Harley-Davidson FXDWG2 Base
2004-2006 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
1984 Harley-Davidson FXE Super Glide Base
1984-1985 Harley-Davidson FXEF Fat Bob Base
1987-1994 Harley-Davidson FXLR Low Rider Custom Base
1984-1994 Harley-Davidson FXR Super Glide II Base
1999 Harley-Davidson FXR2 Base
1999 Harley-Davidson FXR3 Base
2000 Harley-Davidson FXR4 Base
1985-1987 Harley-Davidson FXRC Low Rider Chrome Base
1986 Harley-Davidson FXRD Sport Glide Grand Touring Base
1984 Harley-Davidson FXRDG Disc Glide Base
1985-1995 Harley-Davidson FXRPF Police Base
1984-1992 Harley-Davidson FXRS Low Glide Base
1990-1994 Harley-Davidson FXRS-Conv Low Rider Sport Convertible Base
1984-1992 Harley-Davidson FXRT Sport Glide Base
1984-1985 Harley-Davidson FXSB Low Rider - Belt Base
1984-2006 Harley-Davidson FXST Softail Standard Base

…and 24 additional fitments. Contact us to confirm yours.

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.

Superior Performance for Your Harley-Davidson 5-Speed Transmission

Maintain the smooth operation and reliability of your Harley-Davidson Big Twin's 5-speed transmission with the Twin Power Mainshaft Bearing. Designed for models from 1984 to 2006 (excluding 6-speed Dyna models), this bearing is a direct replacement for Harley-Davidson part number 8996A, offering exceptional quality and durability.

Key Features and Benefits:

  • Precision Fitment: Engineered to perfectly replace H-D 8996A, ensuring compatibility with a wide array of 5-speed Big Twin transmissions.
  • Enhanced Durability: Constructed from high-quality materials to withstand the rigors of daily riding and demanding conditions, ensuring long service life.
  • Smooth Shifting: Promotes reduced friction and wear within the transmission, contributing to smoother gear changes and overall drivetrain efficiency.
  • Extensive Application: Fits numerous Harley-Davidson models including Electra Glide, Road King, Heritage Softail, Fat Boy, and FXR series from 1984 through 2006.
  • Reliable Replacement: An ideal choice for routine maintenance, repairs, or upgrades, ensuring your transmission performs at its best.

This Twin Power mainshaft bearing is critical for maintaining the integrity of your transmission. By ensuring proper shaft alignment and reducing rotational resistance, it helps prevent premature wear on other transmission components. Whether you're a seasoned mechanic or a dedicated DIYer, this part offers the quality and reliability you expect for your Harley-Davidson.

Keep your ride running smoothly. Get the Twin Power 5-Speed Big Twin Mainshaft Bearing at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1997-2006 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
2002 Harley-Davidson FLHRSEI Screamin Eagle Road King Base
2003 Harley-Davidson FLHRSEI2 Screamin Eagle Road King 2 Base
1984 Harley-Davidson FLHS Electra Glide Sport Base
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1995-2006 Harley-Davidson FLHT Electra Glide Standard Base
1984-2005 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1995-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2003-2006 Harley-Davidson FLHTI Electra Glide Standard Base
2006 Harley-Davidson FLHX Street Glide Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base
1988-2006 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
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
2005-2006 Harley-Davidson FLSTN Softail Deluxe Base
1997-2006 Harley-Davidson FLSTS Heritage Springer Base
2005-2006 Harley-Davidson FLSTSC Softail Springer Classic Base
2001-2003 Harley-Davidson FLSTSI Heritage Springer Base
1996 Harley-Davidson FLTCUI Tour Glide Ultra Classic Base
1998-2006 Harley-Davidson FLTR Road Glide Base
1998-2006 Harley-Davidson FLTRI Road Glide Base
1995-2006 Harley-Davidson FXD Dyna Super Glide Base
2006 Harley-Davidson FXDBI Street Bob Base
1992 Harley-Davidson FXDC Super Glide Custom Base
2005 Harley-Davidson FXDC Super Glide Custom Base
2005-2006 Harley-Davidson FXDCI Super Glide Custom Base
2006 Harley-Davidson FXDI Dyna Super Glide Base
1993-2005 Harley-Davidson FXDL Dyna Low Rider Base
2004-2006 Harley-Davidson FXDLI Dyna Low Rider Base
1994-2000 Harley-Davidson FXDS-Conv Dyna Convertible Base
1993-2006 Harley-Davidson FXDWG Dyna Wide Glide Base
2001 Harley-Davidson FXDWG2 Base
2004-2006 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
1984 Harley-Davidson FXE Super Glide Base
1984-1985 Harley-Davidson FXEF Fat Bob Base
1987-1994 Harley-Davidson FXLR Low Rider Custom Base
1984-1994 Harley-Davidson FXR Super Glide II Base
1999 Harley-Davidson FXR2 Base
1999 Harley-Davidson FXR3 Base
2000 Harley-Davidson FXR4 Base
1985-1987 Harley-Davidson FXRC Low Rider Chrome Base
1986 Harley-Davidson FXRD Sport Glide Grand Touring Base
1984 Harley-Davidson FXRDG Disc Glide Base
1985-1995 Harley-Davidson FXRPF Police Base
1984-1992 Harley-Davidson FXRS Low Glide Base
1990-1994 Harley-Davidson FXRS-Conv Low Rider Sport Convertible Base
1984-1992 Harley-Davidson FXRT Sport Glide Base
1984-1985 Harley-Davidson FXSB Low Rider - Belt Base
1984-2006 Harley-Davidson FXST Softail Standard Base

…and 24 additional fitments. Contact us to confirm yours.

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.

Superior Performance for Your Harley-Davidson 5-Speed Transmission

Maintain the smooth operation and reliability of your Harley-Davidson Big Twin's 5-speed transmission with the Twin Power Mainshaft Bearing. Designed for models from 1984 to 2006 (excluding 6-speed Dyna models), this bearing is a direct replacement for Harley-Davidson part number 8996A, offering exceptional quality and durability.

Key Features and Benefits:

  • Precision Fitment: Engineered to perfectly replace H-D 8996A, ensuring compatibility with a wide array of 5-speed Big Twin transmissions.
  • Enhanced Durability: Constructed from high-quality materials to withstand the rigors of daily riding and demanding conditions, ensuring long service life.
  • Smooth Shifting: Promotes reduced friction and wear within the transmission, contributing to smoother gear changes and overall drivetrain efficiency.
  • Extensive Application: Fits numerous Harley-Davidson models including Electra Glide, Road King, Heritage Softail, Fat Boy, and FXR series from 1984 through 2006.
  • Reliable Replacement: An ideal choice for routine maintenance, repairs, or upgrades, ensuring your transmission performs at its best.

This Twin Power mainshaft bearing is critical for maintaining the integrity of your transmission. By ensuring proper shaft alignment and reducing rotational resistance, it helps prevent premature wear on other transmission components. Whether you're a seasoned mechanic or a dedicated DIYer, this part offers the quality and reliability you expect for your Harley-Davidson.

Keep your ride running smoothly. Get the Twin Power 5-Speed Big Twin Mainshaft Bearing at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1997-2006 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
2002 Harley-Davidson FLHRSEI Screamin Eagle Road King Base
2003 Harley-Davidson FLHRSEI2 Screamin Eagle Road King 2 Base
1984 Harley-Davidson FLHS Electra Glide Sport Base
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1995-2006 Harley-Davidson FLHT Electra Glide Standard Base
1984-2005 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1995-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2003-2006 Harley-Davidson FLHTI Electra Glide Standard Base
2006 Harley-Davidson FLHX Street Glide Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base
1988-2006 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
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
2005-2006 Harley-Davidson FLSTN Softail Deluxe Base
1997-2006 Harley-Davidson FLSTS Heritage Springer Base
2005-2006 Harley-Davidson FLSTSC Softail Springer Classic Base
2001-2003 Harley-Davidson FLSTSI Heritage Springer Base
1996 Harley-Davidson FLTCUI Tour Glide Ultra Classic Base
1998-2006 Harley-Davidson FLTR Road Glide Base
1998-2006 Harley-Davidson FLTRI Road Glide Base
1995-2006 Harley-Davidson FXD Dyna Super Glide Base
2006 Harley-Davidson FXDBI Street Bob Base
1992 Harley-Davidson FXDC Super Glide Custom Base
2005 Harley-Davidson FXDC Super Glide Custom Base
2005-2006 Harley-Davidson FXDCI Super Glide Custom Base
2006 Harley-Davidson FXDI Dyna Super Glide Base
1993-2005 Harley-Davidson FXDL Dyna Low Rider Base
2004-2006 Harley-Davidson FXDLI Dyna Low Rider Base
1994-2000 Harley-Davidson FXDS-Conv Dyna Convertible Base
1993-2006 Harley-Davidson FXDWG Dyna Wide Glide Base
2001 Harley-Davidson FXDWG2 Base
2004-2006 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
1984 Harley-Davidson FXE Super Glide Base
1984-1985 Harley-Davidson FXEF Fat Bob Base
1987-1994 Harley-Davidson FXLR Low Rider Custom Base
1984-1994 Harley-Davidson FXR Super Glide II Base
1999 Harley-Davidson FXR2 Base
1999 Harley-Davidson FXR3 Base
2000 Harley-Davidson FXR4 Base
1985-1987 Harley-Davidson FXRC Low Rider Chrome Base
1986 Harley-Davidson FXRD Sport Glide Grand Touring Base
1984 Harley-Davidson FXRDG Disc Glide Base
1985-1995 Harley-Davidson FXRPF Police Base
1984-1992 Harley-Davidson FXRS Low Glide Base
1990-1994 Harley-Davidson FXRS-Conv Low Rider Sport Convertible Base
1984-1992 Harley-Davidson FXRT Sport Glide Base
1984-1985 Harley-Davidson FXSB Low Rider - Belt Base
1984-2006 Harley-Davidson FXST Softail Standard Base

…and 24 additional fitments. Contact us to confirm yours.

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