Antigravity YTX20 Lithium Battery w/Re-Start — Fits 1973-1989 BMW and Harley-Davidson

SKU: ANTAG-ATX20-RS
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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 Antigravity Batteries

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

Watch in action

Reliability Meets Performance

The Antigravity YTX20 Lithium Battery with Re-Start is the ultimate upgrade for classic BMW and Harley-Davidson motorcycles. If you have ever experienced the frustration of a dead battery, you will appreciate the integrated Re-Start technology. This system monitors the battery's voltage and reserves enough energy to ensure you can always start your bike, even if you accidentally leave your ignition or lights on.

Key Features

  • Re-Start Technology: A simple button press gives you a jump-start from your own battery.
  • Lightweight Design: Significantly lighter than traditional YTX20 lead-acid batteries.
  • High Cranking Power: Provides reliable, high-voltage starts for vintage engines.
  • Durability: Built to handle the specific vibration profiles of classic motorcycles.
  • Maintenance-Free: No need for acid or constant monitoring.

This battery is a direct fit for many iconic models, including the BMW K-series and Harley-Davidson FLST Heritage Softail. By replacing your heavy lead-acid unit with this lithium powerhouse, you not only improve starting reliability but also benefit from better handling due to reduced weight. The YTX20 is engineered to provide years of trouble-free service, making it a smart investment for any vintage motorcycle enthusiast. Experience the peace of mind that comes with Re-Start technology and upgrade your bike's electrical system at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1990-1993 BMW K1 Base
1985-1986 BMW K100 Base
1987-1991 BMW K100LT Base
1985-1988 BMW K100RS Base
1985-1988 BMW K100RT Base
1993-1995 BMW K1100LT Base
1993-1996 BMW K1100RS Base
2003-2008 BMW K1200GT Base
1999-2009 BMW K1200LT Base
1997-2005 BMW K1200RS Base
2005 BMW K1200S Base
2009-2010 BMW K1300GT Base
2009-2011 BMW K1300R Base
2011-2016 BMW K1600GT Base
1988-1995 BMW K75 Base
1986-1988 BMW K75C Base
1992 BMW K75RT Base
1987-1992 BMW K75S Base
1976-1978 BMW R100/7 Base
1980-1984 BMW R100CS Base
1988-1994 BMW R100GS Base
1992-1995 BMW R100R Base
1988-1990 BMW R100RS Base
1988-1994 BMW R100RT Base
1994-1995 BMW R1100GS Base
1995-2000 BMW R1100R Base
1993-1994 BMW R1100RS Base
1994-1999 BMW R1100RT Base
1999-2000 BMW R1100S Base
2000-2004 BMW R1150GS Base
2001-2006 BMW R1150R Base
2004 BMW R1150RS Base
2002-2005 BMW R1150RT Base
1998-2002 BMW R1200C Base
2005-2013 BMW R1200GS Base
1973-1976 BMW R90/6 Base
2000-2009 Buell Blast Base
1997-2002 Buell M2 Cyclone Base
1987 Buell RR1000 Base
1989-1990 Buell RR1200 Base
1989-1992 Buell RS1200 Base
1992-1993 Buell RSS1200 Base
1996-1998 Buell S1 Lightning Base
1995-1996 Buell S2 Thunderbolt Base
1996 Buell S2T Thunderbolt Base
1997-2001 Buell S3 Thunderbolt Base
1997-2002 Buell S3T Thunderbolt Base
1999-2002 Buell X1 Lightning Base
2004-2010 Buell XB12R Firebolt Base
2004-2008 Buell XB12S Lightning Base
2008-2010 Buell XB12XT Ulysses Base
2002-2007 Buell XB9R Firebolt Base
2003-2004 Buell XB9S Lightning Base
2011-2020 Can-Am Commander 800R Base
2012 Harley-Davidson FLD Switchback Base
2018-2020 Harley-Davidson FLDE Deluxe 107 Base
2018-2022 Harley-Davidson FLFBS Fat Boy 114 Base
2018-2022 Harley-Davidson FLHCS Heritage Classic 114 Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base

…and 157 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Antigravity Batteries

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

Watch in action

Reliability Meets Performance

The Antigravity YTX20 Lithium Battery with Re-Start is the ultimate upgrade for classic BMW and Harley-Davidson motorcycles. If you have ever experienced the frustration of a dead battery, you will appreciate the integrated Re-Start technology. This system monitors the battery's voltage and reserves enough energy to ensure you can always start your bike, even if you accidentally leave your ignition or lights on.

Key Features

  • Re-Start Technology: A simple button press gives you a jump-start from your own battery.
  • Lightweight Design: Significantly lighter than traditional YTX20 lead-acid batteries.
  • High Cranking Power: Provides reliable, high-voltage starts for vintage engines.
  • Durability: Built to handle the specific vibration profiles of classic motorcycles.
  • Maintenance-Free: No need for acid or constant monitoring.

This battery is a direct fit for many iconic models, including the BMW K-series and Harley-Davidson FLST Heritage Softail. By replacing your heavy lead-acid unit with this lithium powerhouse, you not only improve starting reliability but also benefit from better handling due to reduced weight. The YTX20 is engineered to provide years of trouble-free service, making it a smart investment for any vintage motorcycle enthusiast. Experience the peace of mind that comes with Re-Start technology and upgrade your bike's electrical system at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1990-1993 BMW K1 Base
1985-1986 BMW K100 Base
1987-1991 BMW K100LT Base
1985-1988 BMW K100RS Base
1985-1988 BMW K100RT Base
1993-1995 BMW K1100LT Base
1993-1996 BMW K1100RS Base
2003-2008 BMW K1200GT Base
1999-2009 BMW K1200LT Base
1997-2005 BMW K1200RS Base
2005 BMW K1200S Base
2009-2010 BMW K1300GT Base
2009-2011 BMW K1300R Base
2011-2016 BMW K1600GT Base
1988-1995 BMW K75 Base
1986-1988 BMW K75C Base
1992 BMW K75RT Base
1987-1992 BMW K75S Base
1976-1978 BMW R100/7 Base
1980-1984 BMW R100CS Base
1988-1994 BMW R100GS Base
1992-1995 BMW R100R Base
1988-1990 BMW R100RS Base
1988-1994 BMW R100RT Base
1994-1995 BMW R1100GS Base
1995-2000 BMW R1100R Base
1993-1994 BMW R1100RS Base
1994-1999 BMW R1100RT Base
1999-2000 BMW R1100S Base
2000-2004 BMW R1150GS Base
2001-2006 BMW R1150R Base
2004 BMW R1150RS Base
2002-2005 BMW R1150RT Base
1998-2002 BMW R1200C Base
2005-2013 BMW R1200GS Base
1973-1976 BMW R90/6 Base
2000-2009 Buell Blast Base
1997-2002 Buell M2 Cyclone Base
1987 Buell RR1000 Base
1989-1990 Buell RR1200 Base
1989-1992 Buell RS1200 Base
1992-1993 Buell RSS1200 Base
1996-1998 Buell S1 Lightning Base
1995-1996 Buell S2 Thunderbolt Base
1996 Buell S2T Thunderbolt Base
1997-2001 Buell S3 Thunderbolt Base
1997-2002 Buell S3T Thunderbolt Base
1999-2002 Buell X1 Lightning Base
2004-2010 Buell XB12R Firebolt Base
2004-2008 Buell XB12S Lightning Base
2008-2010 Buell XB12XT Ulysses Base
2002-2007 Buell XB9R Firebolt Base
2003-2004 Buell XB9S Lightning Base
2011-2020 Can-Am Commander 800R Base
2012 Harley-Davidson FLD Switchback Base
2018-2020 Harley-Davidson FLDE Deluxe 107 Base
2018-2022 Harley-Davidson FLFBS Fat Boy 114 Base
2018-2022 Harley-Davidson FLHCS Heritage Classic 114 Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base

…and 157 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Antigravity Batteries

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

Watch in action

Reliability Meets Performance

The Antigravity YTX20 Lithium Battery with Re-Start is the ultimate upgrade for classic BMW and Harley-Davidson motorcycles. If you have ever experienced the frustration of a dead battery, you will appreciate the integrated Re-Start technology. This system monitors the battery's voltage and reserves enough energy to ensure you can always start your bike, even if you accidentally leave your ignition or lights on.

Key Features

  • Re-Start Technology: A simple button press gives you a jump-start from your own battery.
  • Lightweight Design: Significantly lighter than traditional YTX20 lead-acid batteries.
  • High Cranking Power: Provides reliable, high-voltage starts for vintage engines.
  • Durability: Built to handle the specific vibration profiles of classic motorcycles.
  • Maintenance-Free: No need for acid or constant monitoring.

This battery is a direct fit for many iconic models, including the BMW K-series and Harley-Davidson FLST Heritage Softail. By replacing your heavy lead-acid unit with this lithium powerhouse, you not only improve starting reliability but also benefit from better handling due to reduced weight. The YTX20 is engineered to provide years of trouble-free service, making it a smart investment for any vintage motorcycle enthusiast. Experience the peace of mind that comes with Re-Start technology and upgrade your bike's electrical system at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1990-1993 BMW K1 Base
1985-1986 BMW K100 Base
1987-1991 BMW K100LT Base
1985-1988 BMW K100RS Base
1985-1988 BMW K100RT Base
1993-1995 BMW K1100LT Base
1993-1996 BMW K1100RS Base
2003-2008 BMW K1200GT Base
1999-2009 BMW K1200LT Base
1997-2005 BMW K1200RS Base
2005 BMW K1200S Base
2009-2010 BMW K1300GT Base
2009-2011 BMW K1300R Base
2011-2016 BMW K1600GT Base
1988-1995 BMW K75 Base
1986-1988 BMW K75C Base
1992 BMW K75RT Base
1987-1992 BMW K75S Base
1976-1978 BMW R100/7 Base
1980-1984 BMW R100CS Base
1988-1994 BMW R100GS Base
1992-1995 BMW R100R Base
1988-1990 BMW R100RS Base
1988-1994 BMW R100RT Base
1994-1995 BMW R1100GS Base
1995-2000 BMW R1100R Base
1993-1994 BMW R1100RS Base
1994-1999 BMW R1100RT Base
1999-2000 BMW R1100S Base
2000-2004 BMW R1150GS Base
2001-2006 BMW R1150R Base
2004 BMW R1150RS Base
2002-2005 BMW R1150RT Base
1998-2002 BMW R1200C Base
2005-2013 BMW R1200GS Base
1973-1976 BMW R90/6 Base
2000-2009 Buell Blast Base
1997-2002 Buell M2 Cyclone Base
1987 Buell RR1000 Base
1989-1990 Buell RR1200 Base
1989-1992 Buell RS1200 Base
1992-1993 Buell RSS1200 Base
1996-1998 Buell S1 Lightning Base
1995-1996 Buell S2 Thunderbolt Base
1996 Buell S2T Thunderbolt Base
1997-2001 Buell S3 Thunderbolt Base
1997-2002 Buell S3T Thunderbolt Base
1999-2002 Buell X1 Lightning Base
2004-2010 Buell XB12R Firebolt Base
2004-2008 Buell XB12S Lightning Base
2008-2010 Buell XB12XT Ulysses Base
2002-2007 Buell XB9R Firebolt Base
2003-2004 Buell XB9S Lightning Base
2011-2020 Can-Am Commander 800R Base
2012 Harley-Davidson FLD Switchback Base
2018-2020 Harley-Davidson FLDE Deluxe 107 Base
2018-2022 Harley-Davidson FLFBS Fat Boy 114 Base
2018-2022 Harley-Davidson FLHCS Heritage Classic 114 Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base

…and 157 additional fitments. Contact us to confirm yours.

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