Twin Power 85-06 Big Twin Inner Primary Bearing — Replaces H-D 9135

SKU: TWP410177
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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 Inner Primary Bearing for Harley Big Twins (1985-2006)

Ensure smooth operation and extended lifespan for your Harley-Davidson Big Twin with the Twin Power Inner Primary Bearing. Engineered to meet or exceed OEM specifications, this bearing is a direct replacement for Harley-Davidson part number 9135, offering a reliable and cost-effective solution for your motorcycle's primary drive system.

Key Features and Benefits:

  • Direct Replacement: Designed to perfectly fit Harley-Davidson Big Twin models from 1985 to 2006, simplifying installation.
  • High-Quality Construction: Built with premium materials to withstand the demanding conditions of motorcycle operation, ensuring longevity and performance.
  • Smooth Power Transfer: Reduces friction and wear within the primary drive, contributing to efficient power delivery to the transmission.
  • Reliable Performance: Provides consistent and dependable operation, minimizing the risk of premature failure and costly repairs.
  • OEM Specification Compliance: Replaces H-D part number 9135, guaranteeing compatibility and performance.

Vehicle Fitment:

This inner primary bearing is compatible with a wide range of Harley-Davidson Big Twin models, including:

  • Road King (FLHR, FLHRCI, FLHRI, FLHRS)
  • Electra Glide (FLHS, FLHT, FLHTC, FLHTCI, FLHTCU, FLHTCUI, FLHTI)
  • Softail Models (FLST, FLSTC, FLSTF)
  • And many more from 1985-2006. Please verify fitment for your specific model.

Invest in the quality and reliability of Twin Power for your motorcycle's critical components. This inner primary bearing is essential for maintaining the integrity of your drivetrain. Get yours today 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
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1995-2003 Harley-Davidson FLHT Electra Glide Standard Base
2006 Harley-Davidson FLHT Electra Glide Standard Base
1985-2005 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
1987-1994 Harley-Davidson FXLR Low Rider Custom Base
1985-1994 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
1985-1995 Harley-Davidson FXRPF Police Base
1985-1992 Harley-Davidson FXRS Low Glide Base
1990-1994 Harley-Davidson FXRS-Conv Low Rider Sport Convertible Base
1985-1992 Harley-Davidson FXRT Sport Glide Base
1985-2006 Harley-Davidson FXST Softail Standard Base
1999-2006 Harley-Davidson FXSTB Night Train Base
2001-2006 Harley-Davidson FXSTBI Night Train Base
1986-1999 Harley-Davidson FXSTC Softail Custom Base
2000-2006 Harley-Davidson FXSTD Softail Deuce Base
2001-2006 Harley-Davidson FXSTDI Softail Deuce Base
2003-2004 Harley-Davidson FXSTDSE Screamin Eagle Softail Deuce Base

…and 4 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.

Twin Power Inner Primary Bearing for Harley Big Twins (1985-2006)

Ensure smooth operation and extended lifespan for your Harley-Davidson Big Twin with the Twin Power Inner Primary Bearing. Engineered to meet or exceed OEM specifications, this bearing is a direct replacement for Harley-Davidson part number 9135, offering a reliable and cost-effective solution for your motorcycle's primary drive system.

Key Features and Benefits:

  • Direct Replacement: Designed to perfectly fit Harley-Davidson Big Twin models from 1985 to 2006, simplifying installation.
  • High-Quality Construction: Built with premium materials to withstand the demanding conditions of motorcycle operation, ensuring longevity and performance.
  • Smooth Power Transfer: Reduces friction and wear within the primary drive, contributing to efficient power delivery to the transmission.
  • Reliable Performance: Provides consistent and dependable operation, minimizing the risk of premature failure and costly repairs.
  • OEM Specification Compliance: Replaces H-D part number 9135, guaranteeing compatibility and performance.

Vehicle Fitment:

This inner primary bearing is compatible with a wide range of Harley-Davidson Big Twin models, including:

  • Road King (FLHR, FLHRCI, FLHRI, FLHRS)
  • Electra Glide (FLHS, FLHT, FLHTC, FLHTCI, FLHTCU, FLHTCUI, FLHTI)
  • Softail Models (FLST, FLSTC, FLSTF)
  • And many more from 1985-2006. Please verify fitment for your specific model.

Invest in the quality and reliability of Twin Power for your motorcycle's critical components. This inner primary bearing is essential for maintaining the integrity of your drivetrain. Get yours today 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
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1995-2003 Harley-Davidson FLHT Electra Glide Standard Base
2006 Harley-Davidson FLHT Electra Glide Standard Base
1985-2005 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
1987-1994 Harley-Davidson FXLR Low Rider Custom Base
1985-1994 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
1985-1995 Harley-Davidson FXRPF Police Base
1985-1992 Harley-Davidson FXRS Low Glide Base
1990-1994 Harley-Davidson FXRS-Conv Low Rider Sport Convertible Base
1985-1992 Harley-Davidson FXRT Sport Glide Base
1985-2006 Harley-Davidson FXST Softail Standard Base
1999-2006 Harley-Davidson FXSTB Night Train Base
2001-2006 Harley-Davidson FXSTBI Night Train Base
1986-1999 Harley-Davidson FXSTC Softail Custom Base
2000-2006 Harley-Davidson FXSTD Softail Deuce Base
2001-2006 Harley-Davidson FXSTDI Softail Deuce Base
2003-2004 Harley-Davidson FXSTDSE Screamin Eagle Softail Deuce Base

…and 4 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.

Twin Power Inner Primary Bearing for Harley Big Twins (1985-2006)

Ensure smooth operation and extended lifespan for your Harley-Davidson Big Twin with the Twin Power Inner Primary Bearing. Engineered to meet or exceed OEM specifications, this bearing is a direct replacement for Harley-Davidson part number 9135, offering a reliable and cost-effective solution for your motorcycle's primary drive system.

Key Features and Benefits:

  • Direct Replacement: Designed to perfectly fit Harley-Davidson Big Twin models from 1985 to 2006, simplifying installation.
  • High-Quality Construction: Built with premium materials to withstand the demanding conditions of motorcycle operation, ensuring longevity and performance.
  • Smooth Power Transfer: Reduces friction and wear within the primary drive, contributing to efficient power delivery to the transmission.
  • Reliable Performance: Provides consistent and dependable operation, minimizing the risk of premature failure and costly repairs.
  • OEM Specification Compliance: Replaces H-D part number 9135, guaranteeing compatibility and performance.

Vehicle Fitment:

This inner primary bearing is compatible with a wide range of Harley-Davidson Big Twin models, including:

  • Road King (FLHR, FLHRCI, FLHRI, FLHRS)
  • Electra Glide (FLHS, FLHT, FLHTC, FLHTCI, FLHTCU, FLHTCUI, FLHTI)
  • Softail Models (FLST, FLSTC, FLSTF)
  • And many more from 1985-2006. Please verify fitment for your specific model.

Invest in the quality and reliability of Twin Power for your motorcycle's critical components. This inner primary bearing is essential for maintaining the integrity of your drivetrain. Get yours today 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
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1995-2003 Harley-Davidson FLHT Electra Glide Standard Base
2006 Harley-Davidson FLHT Electra Glide Standard Base
1985-2005 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
1987-1994 Harley-Davidson FXLR Low Rider Custom Base
1985-1994 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
1985-1995 Harley-Davidson FXRPF Police Base
1985-1992 Harley-Davidson FXRS Low Glide Base
1990-1994 Harley-Davidson FXRS-Conv Low Rider Sport Convertible Base
1985-1992 Harley-Davidson FXRT Sport Glide Base
1985-2006 Harley-Davidson FXST Softail Standard Base
1999-2006 Harley-Davidson FXSTB Night Train Base
2001-2006 Harley-Davidson FXSTBI Night Train Base
1986-1999 Harley-Davidson FXSTC Softail Custom Base
2000-2006 Harley-Davidson FXSTD Softail Deuce Base
2001-2006 Harley-Davidson FXSTDI Softail Deuce Base
2003-2004 Harley-Davidson FXSTDSE Screamin Eagle Softail Deuce Base

…and 4 additional fitments. Contact us to confirm yours.

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