S&S Cycle Precision Tappets — Fits 2017+ Harley-Davidson M8 Models

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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 S&S Cycle

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

Watch in action

Elevate Your M8 Performance with S&S Cycle Precision Tappets

Unleash the full potential of your 2017 and newer Harley-Davidson Milwaukee-Eight engine with S&S Cycle Precision Tappets. Engineered for superior valvetrain stability and reduced friction, these tappets are a critical upgrade for any performance-minded rider. S&S Cycle's commitment to quality ensures a precise fit and reliable operation, even under demanding conditions.

Key Features & Benefits:

  • Optimized Valvetrain Stability: Designed to maintain consistent valve timing and lift, crucial for high-performance M8 engines.
  • Reduced Friction & Wear: Precision-machined surfaces minimize drag, extending the life of your valvetrain components.
  • Enhanced Durability: Constructed from high-quality materials to withstand the rigors of aggressive riding and increased engine output.
  • Direct Replacement Fit: Engineered for a seamless installation in all 2017+ Harley-Davidson Milwaukee-Eight models.

Whether you're pushing higher RPMs or simply seeking improved engine longevity, S&S Cycle Precision Tappets provide the foundation for a robust and efficient valvetrain. Experience the difference in your M8's performance and reliability. Find these essential M8 upgrades at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2012 Harley-Davidson FLD Switchback Base
2018-2021 Harley-Davidson FLFBS Fat Boy 114 Base
2018-2021 Harley-Davidson FLHCS Heritage Classic 114 Base
1999-2021 Harley-Davidson FLHR Road King Base
2007-2019 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
2017-2021 Harley-Davidson FLHRXS Road King Special 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
2019-2021 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
2007-2019 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
2008-2021 Harley-Davidson FLHTK Ultra Limited Base
2015-2020 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2021 Harley-Davidson FLHTKSE CVO Limited Base
2006-2021 Harley-Davidson FLHX Street Glide Base
2014-2021 Harley-Davidson FLHXS Street Glide Special Base
2010-2012 Harley-Davidson FLHXSE CVO Street Glide Base
2015-2021 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015-2021 Harley-Davidson FLRT Freewheeler Base
2012-2017 Harley-Davidson FLS Softail Slim Base
2016-2017 Harley-Davidson FLSS Softail Slim S 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
2010-2012 Harley-Davidson FLSTSE CVO Softail Convertible Base
1999-2013 Harley-Davidson FLTR Road Glide Base
2015-2016 Harley-Davidson FLTR Road Glide Base
1999-2006 Harley-Davidson FLTRI Road Glide Base
2011-2020 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
2015-2021 Harley-Davidson FLTRX Road Glide Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015-2021 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base
2018-2020 Harley-Davidson FXBRS Breakout 114 Base
2008-2009 Harley-Davidson FXCW Rocker Base
2008-2011 Harley-Davidson FXCWC Rocker C Base
1999-2013 Harley-Davidson FXD Dyna Super Glide Base
1999-2005 Harley-Davidson FXDL Dyna Low Rider Base
2007-2017 Harley-Davidson FXDL Dyna Low Rider Base
2004-2006 Harley-Davidson FXDLI Dyna Low Rider Base
1999-2017 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

…and 21 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About S&S Cycle

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

Watch in action

Elevate Your M8 Performance with S&S Cycle Precision Tappets

Unleash the full potential of your 2017 and newer Harley-Davidson Milwaukee-Eight engine with S&S Cycle Precision Tappets. Engineered for superior valvetrain stability and reduced friction, these tappets are a critical upgrade for any performance-minded rider. S&S Cycle's commitment to quality ensures a precise fit and reliable operation, even under demanding conditions.

Key Features & Benefits:

  • Optimized Valvetrain Stability: Designed to maintain consistent valve timing and lift, crucial for high-performance M8 engines.
  • Reduced Friction & Wear: Precision-machined surfaces minimize drag, extending the life of your valvetrain components.
  • Enhanced Durability: Constructed from high-quality materials to withstand the rigors of aggressive riding and increased engine output.
  • Direct Replacement Fit: Engineered for a seamless installation in all 2017+ Harley-Davidson Milwaukee-Eight models.

Whether you're pushing higher RPMs or simply seeking improved engine longevity, S&S Cycle Precision Tappets provide the foundation for a robust and efficient valvetrain. Experience the difference in your M8's performance and reliability. Find these essential M8 upgrades at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2012 Harley-Davidson FLD Switchback Base
2018-2021 Harley-Davidson FLFBS Fat Boy 114 Base
2018-2021 Harley-Davidson FLHCS Heritage Classic 114 Base
1999-2021 Harley-Davidson FLHR Road King Base
2007-2019 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
2017-2021 Harley-Davidson FLHRXS Road King Special 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
2019-2021 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
2007-2019 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
2008-2021 Harley-Davidson FLHTK Ultra Limited Base
2015-2020 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2021 Harley-Davidson FLHTKSE CVO Limited Base
2006-2021 Harley-Davidson FLHX Street Glide Base
2014-2021 Harley-Davidson FLHXS Street Glide Special Base
2010-2012 Harley-Davidson FLHXSE CVO Street Glide Base
2015-2021 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015-2021 Harley-Davidson FLRT Freewheeler Base
2012-2017 Harley-Davidson FLS Softail Slim Base
2016-2017 Harley-Davidson FLSS Softail Slim S 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
2010-2012 Harley-Davidson FLSTSE CVO Softail Convertible Base
1999-2013 Harley-Davidson FLTR Road Glide Base
2015-2016 Harley-Davidson FLTR Road Glide Base
1999-2006 Harley-Davidson FLTRI Road Glide Base
2011-2020 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
2015-2021 Harley-Davidson FLTRX Road Glide Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015-2021 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base
2018-2020 Harley-Davidson FXBRS Breakout 114 Base
2008-2009 Harley-Davidson FXCW Rocker Base
2008-2011 Harley-Davidson FXCWC Rocker C Base
1999-2013 Harley-Davidson FXD Dyna Super Glide Base
1999-2005 Harley-Davidson FXDL Dyna Low Rider Base
2007-2017 Harley-Davidson FXDL Dyna Low Rider Base
2004-2006 Harley-Davidson FXDLI Dyna Low Rider Base
1999-2017 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

…and 21 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About S&S Cycle

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

Watch in action

Elevate Your M8 Performance with S&S Cycle Precision Tappets

Unleash the full potential of your 2017 and newer Harley-Davidson Milwaukee-Eight engine with S&S Cycle Precision Tappets. Engineered for superior valvetrain stability and reduced friction, these tappets are a critical upgrade for any performance-minded rider. S&S Cycle's commitment to quality ensures a precise fit and reliable operation, even under demanding conditions.

Key Features & Benefits:

  • Optimized Valvetrain Stability: Designed to maintain consistent valve timing and lift, crucial for high-performance M8 engines.
  • Reduced Friction & Wear: Precision-machined surfaces minimize drag, extending the life of your valvetrain components.
  • Enhanced Durability: Constructed from high-quality materials to withstand the rigors of aggressive riding and increased engine output.
  • Direct Replacement Fit: Engineered for a seamless installation in all 2017+ Harley-Davidson Milwaukee-Eight models.

Whether you're pushing higher RPMs or simply seeking improved engine longevity, S&S Cycle Precision Tappets provide the foundation for a robust and efficient valvetrain. Experience the difference in your M8's performance and reliability. Find these essential M8 upgrades at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2012 Harley-Davidson FLD Switchback Base
2018-2021 Harley-Davidson FLFBS Fat Boy 114 Base
2018-2021 Harley-Davidson FLHCS Heritage Classic 114 Base
1999-2021 Harley-Davidson FLHR Road King Base
2007-2019 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
2017-2021 Harley-Davidson FLHRXS Road King Special 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
2019-2021 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
2007-2019 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
2008-2021 Harley-Davidson FLHTK Ultra Limited Base
2015-2020 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2021 Harley-Davidson FLHTKSE CVO Limited Base
2006-2021 Harley-Davidson FLHX Street Glide Base
2014-2021 Harley-Davidson FLHXS Street Glide Special Base
2010-2012 Harley-Davidson FLHXSE CVO Street Glide Base
2015-2021 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015-2021 Harley-Davidson FLRT Freewheeler Base
2012-2017 Harley-Davidson FLS Softail Slim Base
2016-2017 Harley-Davidson FLSS Softail Slim S 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
2010-2012 Harley-Davidson FLSTSE CVO Softail Convertible Base
1999-2013 Harley-Davidson FLTR Road Glide Base
2015-2016 Harley-Davidson FLTR Road Glide Base
1999-2006 Harley-Davidson FLTRI Road Glide Base
2011-2020 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
2015-2021 Harley-Davidson FLTRX Road Glide Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015-2021 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base
2018-2020 Harley-Davidson FXBRS Breakout 114 Base
2008-2009 Harley-Davidson FXCW Rocker Base
2008-2011 Harley-Davidson FXCWC Rocker C Base
1999-2013 Harley-Davidson FXD Dyna Super Glide Base
1999-2005 Harley-Davidson FXDL Dyna Low Rider Base
2007-2017 Harley-Davidson FXDL Dyna Low Rider Base
2004-2006 Harley-Davidson FXDLI Dyna Low Rider Base
1999-2017 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

…and 21 additional fitments. Contact us to confirm yours.

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