Cometic Gasket Twin Cam Rocker Box Rebuild Kit — Fits 1999-2017 Harley-Davidson 88in & 96in

SKU: CGSC9588
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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 Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Watch in action

Complete Rocker Box Rebuild Kit for Twin Cam

Ensure a perfect seal for your Harley-Davidson 88in or 96in Twin Cam engine with the Cometic Gasket Rocker Box Rebuild Kit. This comprehensive kit contains all the necessary gaskets to perform a professional-grade rocker box service, effectively addressing leaks and maintaining engine integrity. Cometic gaskets are renowned for their ability to withstand the high clamp loads and extreme temperatures found in modern V-Twin engines.

Kit Highlights

  • Compatible with 1999-2017 Twin Cam 88in and 96in engines
  • High-quality materials for superior sealing
  • Engineered for high-performance and stock applications
  • Prevents oil leaks and loss of compression
  • Made in the USA

When you demand the best for your motorcycle, trust Cometic's extensive library of powersports gaskets. These components are designed to maximize your engine's power and performance by ensuring that every seal is airtight and durable. Whether you are a professional mechanic or a dedicated DIY enthusiast, this kit provides the peace of mind you need for your next ride. Discover premium engine sealing solutions at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1999-2017 Harley-Davidson FLHR Road King Base
2007-2013 Harley-Davidson FLHRC Road King Classic Base
1999-2006 Harley-Davidson FLHRCI Road King Classic Base
2000-2006 Harley-Davidson FLHRI Road King Base
2004-2007 Harley-Davidson FLHRS Road King Custom Base
1999-2000 Harley-Davidson FLHT Electra Glide Standard Base
2003 Harley-Davidson FLHT Electra Glide Standard Base
2006-2009 Harley-Davidson FLHT Electra Glide Standard Base
1999-2005 Harley-Davidson FLHTC Electra Glide Classic Base
2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base
1999-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2007-2017 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1999-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base
2015-2017 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2017 Harley-Davidson FLHTKSE CVO Limited Base
2006-2017 Harley-Davidson FLHX Street Glide Base
2014-2017 Harley-Davidson FLHXS Street Glide Special Base
2010 Harley-Davidson FLHXSE CVO Street Glide Base
2015-2017 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015-2017 Harley-Davidson FLRT Freewheeler Base
2006 Harley-Davidson FLST Heritage Softail Base
1999-2017 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2006 Harley-Davidson FLSTCI Heritage Softail Classic Base
1999-2017 Harley-Davidson FLSTF Fat Boy Base
2010-2017 Harley-Davidson FLSTFB Fat Boy Lo Base
2016-2017 Harley-Davidson FLSTFBS Fat Boy S Base
2001-2006 Harley-Davidson FLSTFI Fat Boy Base
2008-2011 Harley-Davidson FLSTSB Cross Bones Base
2010 Harley-Davidson FLSTSE CVO Softail Convertible Base
1999-2010 Harley-Davidson FLTR Road Glide Base
2016 Harley-Davidson FLTR Road Glide Base
1999-2006 Harley-Davidson FLTRI Road Glide Base
2011-2013 Harley-Davidson FLTRU Road Glide Ultra Base
2016-2017 Harley-Davidson FLTRU Road Glide Ultra Base
2011 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015-2016 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015-2017 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base
1999-2010 Harley-Davidson FXD Dyna Super Glide Base
1999-2005 Harley-Davidson FXDL Dyna Low Rider Base
2007-2009 Harley-Davidson FXDL Dyna Low Rider Base
2014-2017 Harley-Davidson FXDL Dyna Low Rider Base
2004-2006 Harley-Davidson FXDLI Dyna Low Rider Base
1999-2008 Harley-Davidson FXDWG Dyna Wide Glide Base
2010-2017 Harley-Davidson FXDWG Dyna Wide Glide 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
1999-2009 Harley-Davidson FXSTB Night Train Base
2001-2006 Harley-Davidson FXSTBI Night Train Base
1999 Harley-Davidson FXSTC Softail Custom Base
2007-2010 Harley-Davidson FXSTC Softail Custom Base
2000-2007 Harley-Davidson FXSTD Softail Deuce Base
2001-2006 Harley-Davidson FXSTDI Softail Deuce Base
2003-2004 Harley-Davidson FXSTDSE Screamin Eagle Softail Deuce Base
2001-2006 Harley-Davidson FXSTI Softail Standard Base
1999-2006 Harley-Davidson FXSTS Springer Softail Base

…and 3 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Watch in action

Complete Rocker Box Rebuild Kit for Twin Cam

Ensure a perfect seal for your Harley-Davidson 88in or 96in Twin Cam engine with the Cometic Gasket Rocker Box Rebuild Kit. This comprehensive kit contains all the necessary gaskets to perform a professional-grade rocker box service, effectively addressing leaks and maintaining engine integrity. Cometic gaskets are renowned for their ability to withstand the high clamp loads and extreme temperatures found in modern V-Twin engines.

Kit Highlights

  • Compatible with 1999-2017 Twin Cam 88in and 96in engines
  • High-quality materials for superior sealing
  • Engineered for high-performance and stock applications
  • Prevents oil leaks and loss of compression
  • Made in the USA

When you demand the best for your motorcycle, trust Cometic's extensive library of powersports gaskets. These components are designed to maximize your engine's power and performance by ensuring that every seal is airtight and durable. Whether you are a professional mechanic or a dedicated DIY enthusiast, this kit provides the peace of mind you need for your next ride. Discover premium engine sealing solutions at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1999-2017 Harley-Davidson FLHR Road King Base
2007-2013 Harley-Davidson FLHRC Road King Classic Base
1999-2006 Harley-Davidson FLHRCI Road King Classic Base
2000-2006 Harley-Davidson FLHRI Road King Base
2004-2007 Harley-Davidson FLHRS Road King Custom Base
1999-2000 Harley-Davidson FLHT Electra Glide Standard Base
2003 Harley-Davidson FLHT Electra Glide Standard Base
2006-2009 Harley-Davidson FLHT Electra Glide Standard Base
1999-2005 Harley-Davidson FLHTC Electra Glide Classic Base
2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base
1999-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2007-2017 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1999-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base
2015-2017 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2017 Harley-Davidson FLHTKSE CVO Limited Base
2006-2017 Harley-Davidson FLHX Street Glide Base
2014-2017 Harley-Davidson FLHXS Street Glide Special Base
2010 Harley-Davidson FLHXSE CVO Street Glide Base
2015-2017 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015-2017 Harley-Davidson FLRT Freewheeler Base
2006 Harley-Davidson FLST Heritage Softail Base
1999-2017 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2006 Harley-Davidson FLSTCI Heritage Softail Classic Base
1999-2017 Harley-Davidson FLSTF Fat Boy Base
2010-2017 Harley-Davidson FLSTFB Fat Boy Lo Base
2016-2017 Harley-Davidson FLSTFBS Fat Boy S Base
2001-2006 Harley-Davidson FLSTFI Fat Boy Base
2008-2011 Harley-Davidson FLSTSB Cross Bones Base
2010 Harley-Davidson FLSTSE CVO Softail Convertible Base
1999-2010 Harley-Davidson FLTR Road Glide Base
2016 Harley-Davidson FLTR Road Glide Base
1999-2006 Harley-Davidson FLTRI Road Glide Base
2011-2013 Harley-Davidson FLTRU Road Glide Ultra Base
2016-2017 Harley-Davidson FLTRU Road Glide Ultra Base
2011 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015-2016 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015-2017 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base
1999-2010 Harley-Davidson FXD Dyna Super Glide Base
1999-2005 Harley-Davidson FXDL Dyna Low Rider Base
2007-2009 Harley-Davidson FXDL Dyna Low Rider Base
2014-2017 Harley-Davidson FXDL Dyna Low Rider Base
2004-2006 Harley-Davidson FXDLI Dyna Low Rider Base
1999-2008 Harley-Davidson FXDWG Dyna Wide Glide Base
2010-2017 Harley-Davidson FXDWG Dyna Wide Glide 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
1999-2009 Harley-Davidson FXSTB Night Train Base
2001-2006 Harley-Davidson FXSTBI Night Train Base
1999 Harley-Davidson FXSTC Softail Custom Base
2007-2010 Harley-Davidson FXSTC Softail Custom Base
2000-2007 Harley-Davidson FXSTD Softail Deuce Base
2001-2006 Harley-Davidson FXSTDI Softail Deuce Base
2003-2004 Harley-Davidson FXSTDSE Screamin Eagle Softail Deuce Base
2001-2006 Harley-Davidson FXSTI Softail Standard Base
1999-2006 Harley-Davidson FXSTS Springer Softail Base

…and 3 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Watch in action

Complete Rocker Box Rebuild Kit for Twin Cam

Ensure a perfect seal for your Harley-Davidson 88in or 96in Twin Cam engine with the Cometic Gasket Rocker Box Rebuild Kit. This comprehensive kit contains all the necessary gaskets to perform a professional-grade rocker box service, effectively addressing leaks and maintaining engine integrity. Cometic gaskets are renowned for their ability to withstand the high clamp loads and extreme temperatures found in modern V-Twin engines.

Kit Highlights

  • Compatible with 1999-2017 Twin Cam 88in and 96in engines
  • High-quality materials for superior sealing
  • Engineered for high-performance and stock applications
  • Prevents oil leaks and loss of compression
  • Made in the USA

When you demand the best for your motorcycle, trust Cometic's extensive library of powersports gaskets. These components are designed to maximize your engine's power and performance by ensuring that every seal is airtight and durable. Whether you are a professional mechanic or a dedicated DIY enthusiast, this kit provides the peace of mind you need for your next ride. Discover premium engine sealing solutions at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1999-2017 Harley-Davidson FLHR Road King Base
2007-2013 Harley-Davidson FLHRC Road King Classic Base
1999-2006 Harley-Davidson FLHRCI Road King Classic Base
2000-2006 Harley-Davidson FLHRI Road King Base
2004-2007 Harley-Davidson FLHRS Road King Custom Base
1999-2000 Harley-Davidson FLHT Electra Glide Standard Base
2003 Harley-Davidson FLHT Electra Glide Standard Base
2006-2009 Harley-Davidson FLHT Electra Glide Standard Base
1999-2005 Harley-Davidson FLHTC Electra Glide Classic Base
2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base
1999-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2007-2017 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1999-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base
2015-2017 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2017 Harley-Davidson FLHTKSE CVO Limited Base
2006-2017 Harley-Davidson FLHX Street Glide Base
2014-2017 Harley-Davidson FLHXS Street Glide Special Base
2010 Harley-Davidson FLHXSE CVO Street Glide Base
2015-2017 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015-2017 Harley-Davidson FLRT Freewheeler Base
2006 Harley-Davidson FLST Heritage Softail Base
1999-2017 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2006 Harley-Davidson FLSTCI Heritage Softail Classic Base
1999-2017 Harley-Davidson FLSTF Fat Boy Base
2010-2017 Harley-Davidson FLSTFB Fat Boy Lo Base
2016-2017 Harley-Davidson FLSTFBS Fat Boy S Base
2001-2006 Harley-Davidson FLSTFI Fat Boy Base
2008-2011 Harley-Davidson FLSTSB Cross Bones Base
2010 Harley-Davidson FLSTSE CVO Softail Convertible Base
1999-2010 Harley-Davidson FLTR Road Glide Base
2016 Harley-Davidson FLTR Road Glide Base
1999-2006 Harley-Davidson FLTRI Road Glide Base
2011-2013 Harley-Davidson FLTRU Road Glide Ultra Base
2016-2017 Harley-Davidson FLTRU Road Glide Ultra Base
2011 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015-2016 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015-2017 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base
1999-2010 Harley-Davidson FXD Dyna Super Glide Base
1999-2005 Harley-Davidson FXDL Dyna Low Rider Base
2007-2009 Harley-Davidson FXDL Dyna Low Rider Base
2014-2017 Harley-Davidson FXDL Dyna Low Rider Base
2004-2006 Harley-Davidson FXDLI Dyna Low Rider Base
1999-2008 Harley-Davidson FXDWG Dyna Wide Glide Base
2010-2017 Harley-Davidson FXDWG Dyna Wide Glide 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
1999-2009 Harley-Davidson FXSTB Night Train Base
2001-2006 Harley-Davidson FXSTBI Night Train Base
1999 Harley-Davidson FXSTC Softail Custom Base
2007-2010 Harley-Davidson FXSTC Softail Custom Base
2000-2007 Harley-Davidson FXSTD Softail Deuce Base
2001-2006 Harley-Davidson FXSTDI Softail Deuce Base
2003-2004 Harley-Davidson FXSTDSE Screamin Eagle Softail Deuce Base
2001-2006 Harley-Davidson FXSTI Softail Standard Base
1999-2006 Harley-Davidson FXSTS Springer Softail Base

…and 3 additional fitments. Contact us to confirm yours.

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