Twin Power 84-99 Big Twin Exc 99 Softail and Dyna models Derby Cover Gasket 5 Pk

Twin Power™ derby cover gaskets are designed to seal the primary inspection/derby opening on various Big Twin generations, helping prevent fluid leaks while allowing repeated cover removal.

• Model specific gaskets for different Big Twin years and primary designs
• Sold in convenient 5-packs for shops and frequent service work
• Help keep primary fluid contained around the derby opening
• Made in USA

The TwinPower 84-99 Big Twin Derby Cover Gasket Set is an essential maintenance part designed for Harley Davidson models from 1990 to 1999, including Softail and Dyna series. Crafted in the USA, these gaskets ensure a reliable seal around the primary inspection or derby opening, helping to prevent fluid leaks and maintain optimal primary fluid containment. The set includes five gaskets, making it ideal for shops or frequent service work, providing cost-effective durability for multiple repairs or replacements.
Constructed specifically for different Big Twin years and primary designs, these gaskets are engineered for a precise fit on compatible Harley Davidson models such as the FLHS Electra Glide Sport, FLHTC Electra Glide Classic, FLHTCU Ultra Classic, FLST Heritage Softail, FLSTC Heritage Softail Classic, FLSTF Fat Boy, FXRS Low Rider Sport Convertible, FXRT Sport Glide, FXST Softail Standard, and FXSTC Softail Custom from 1990. The high-quality materials used in manufacturing ensure long-lasting performance and resistance to heat and oil exposure, making them a dependable choice for ongoing maintenance.
Installation is straightforward, and these gaskets are designed to withstand repeated removal and reinstallation without losing their sealing capabilities. They help keep the primary compartment sealed, preventing leaks and protecting internal components from dirt and debris. Whether you're performing routine maintenance or a repair, these gaskets provide a reliable seal that helps extend the life of your bike’s primary system. Made in the USA, the TwinPower derby cover gaskets meet strict quality standards and are a trusted choice for professional mechanics and Harley enthusiasts alike.

Features:

• Model specific gaskets designed for various Harley Davidson Big Twin years and primary designs

• Sold in convenient 5-pack for shop use and frequent service needs

• Helps prevent primary fluid leaks by sealing around derby inspection openings

• Constructed from durable materials for long-lasting performance

• Made in the USA to ensure quality and reliability

Fitment:
Harley Davidson FLHR Road King Base 1994
Harley Davidson FLHR Road King Base 1995
Harley Davidson FLHR Road King Base 1996
Harley Davidson FLHR Road King Base 1997
Harley Davidson FLHR Road King Base 1998
Harley Davidson FLHRCI Road King Classic Base 1998
Harley Davidson FLHRI Road King Base 1996
Harley Davidson FLHRI Road King Base 1997
Harley Davidson FLHS Electra Glide Sport Base 1984
Harley Davidson FLHS Electra Glide Sport Base 1987
Harley Davidson FLHS Electra Glide Sport Base 1988
Harley Davidson FLHS Electra Glide Sport Base 1989
Harley Davidson FLHS Electra Glide Sport Base 1990
Harley Davidson FLHS Electra Glide Sport Base 1991
Harley Davidson FLHS Electra Glide Sport Base 1992
Harley Davidson FLHS Electra Glide Sport Base 1993
Harley Davidson FLHT Electra Glide Standard Base 1986
Harley Davidson FLHT Electra Glide Standard Base 1987
Harley Davidson FLHT Electra Glide Standard Base 1988
Harley Davidson FLHT Electra Glide Standard Base 1989
Harley Davidson FLHT Electra Glide Standard Base 1990
Harley Davidson FLHT Electra Glide Standard Base 1991
Harley Davidson FLHT Electra Glide Standard Base 1992
Harley Davidson FLHT Electra Glide Standard Base 1993
Harley Davidson FLHT Electra Glide Standard Base 1994
Harley Davidson FLHT Electra Glide Standard Base 1995
Harley Davidson FLHT Electra Glide Standard Base 1996
Harley Davidson FLHT Electra Glide Standard Base 1997
Harley Davidson FLHT Electra Glide Standard Base 1998
Harley Davidson FLHT Electra Glide Standard Base 1999
Harley Davidson FLHTC Electra Glide Classic Base 1984
Harley Davidson FLHTC Electra Glide Classic Base 1985
Harley Davidson FLHTC Electra Glide Classic Base 1986
Harley Davidson FLHTC Electra Glide Classic Base 1987
Harley Davidson FLHTC Electra Glide Classic Base 1988
Harley Davidson FLHTC Electra Glide Classic Base 1989
Harley Davidson FLHTC Electra Glide Classic Base 1990
Harley Davidson FLHTC Electra Glide Classic Base 1991
Harley Davidson FLHTC Electra Glide Classic Base 1992
Harley Davidson FLHTC Electra Glide Classic Base 1993
Harley Davidson FLHTC Electra Glide Classic Base 1994
Harley Davidson FLHTC Electra Glide Classic Base 1995
Harley Davidson FLHTC Electra Glide Classic Base 1996
Harley Davidson FLHTC Electra Glide Classic Base 1997
Harley Davidson FLHTC Electra Glide Classic Base 1998
Harley Davidson FLHTCI Electra Glide Classic Base 1996
Harley Davidson FLHTCI Electra Glide Classic Base 1997
Harley Davidson FLHTCI Electra Glide Classic Base 1998
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 1989
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 1990
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 1991
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 1992
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 1993
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 1994
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 1995
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 1996
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 1997
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 1995
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 1996
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 1997
Harley Davidson FLHTCUI Electra Glide Ultra Classic Base 1998
Harley Davidson FLST Heritage Softail Base 1986
Harley Davidson FLST Heritage Softail Base 1987
Harley Davidson FLST Heritage Softail Base 1988
Harley Davidson FLST Heritage Softail Base 1989
Harley Davidson FLST Heritage Softail Base 1990
Harley Davidson FLSTC Heritage Softail Classic Base 1988
Harley Davidson FLSTC Heritage Softail Classic Base 1989
Harley Davidson FLSTC Heritage Softail Classic Base 1990
Harley Davidson FLSTC Heritage Softail Classic Base 1991
Harley Davidson FLSTC Heritage Softail Classic Base 1992
Harley Davidson FLSTC Heritage Softail Classic Base 1993
Harley Davidson FLSTC Heritage Softail Classic Base 1994
Harley Davidson FLSTC Heritage Softail Classic Base 1995
Harley Davidson FLSTC Heritage Softail Classic Base 1996
Harley Davidson FLSTC Heritage Softail Classic Base 1997
Harley Davidson FLSTC Heritage Softail Classic Base 1998
Harley Davidson FLSTC Heritage Softail Classic Base 1999
Harley Davidson FLSTF Fat Boy Base 1990
Harley Davidson FLSTF Fat Boy Base 1991
Harley Davidson FLSTF Fat Boy Base 1992
Harley Davidson FLSTF Fat Boy Base 1993
Harley Davidson FLSTF Fat Boy Base 1994
Harley Davidson FLSTF Fat Boy Base 1995
Harley Davidson FLSTF Fat Boy Base 1996
Harley Davidson FLSTF Fat Boy Base 1997
Harley Davidson FLSTF Fat Boy Base 1998
Harley Davidson FLSTF Fat Boy Base 1999
Harley Davidson FLSTN Heritage Softail Nostalgia Base 1993
Harley Davidson FLSTN Heritage Softail Special Base 1994
Harley Davidson FLSTN Heritage Softail Special Base 1995
Harley Davidson FLSTN Heritage Softail Special Base 1996
Harley Davidson FLSTS Heritage Springer Base 1997
Harley Davidson FLSTS Heritage Springer Base 1998
Harley Davidson FLTCUI Tour Glide Ultra Classic Base 1996
Harley Davidson FLTR Road Glide Base 1998
Harley Davidson FLTRI Road Glide Base 1998
Harley Davidson FXD Dyna Super Glide Base 1995
Harley Davidson FXD Dyna Super Glide Base 1996
Harley Davidson FXD Dyna Super Glide Base 1997
Harley Davidson FXD Dyna Super Glide Base 1998
Harley Davidson FXDC Super Glide Custom Base 1992
Harley Davidson FXDL Dyna Low Rider Base 1993
Harley Davidson FXDL Dyna Low Rider Base 1994
Harley Davidson FXDL Dyna Low Rider Base 1995
Harley Davidson FXDL Dyna Low Rider Base 1996
Harley Davidson FXDL Dyna Low Rider Base 1997
Harley Davidson FXDL Dyna Low Rider Base 1998
Harley Davidson FXDS-Conv Dyna Convertible Base 1994
Harley Davidson FXDS-Conv Dyna Convertible Base 1995
Harley Davidson FXDS-Conv Dyna Convertible Base 1996
Harley Davidson FXDS-Conv Dyna Convertible Base 1997
Harley Davidson FXDS-Conv Dyna Convertible Base 1998
Harley Davidson FXDWG Dyna Wide Glide Base 1993
Harley Davidson FXDWG Dyna Wide Glide Base 1994
Harley Davidson FXDWG Dyna Wide Glide Base 1995
Harley Davidson FXDWG Dyna Wide Glide Base 1996
Harley Davidson FXDWG Dyna Wide Glide Base 1997
Harley Davidson FXDWG Dyna Wide Glide Base 1998
Harley Davidson FXR Super Glide II Base 1984
Harley Davidson FXR Super Glide II Base 1985
Harley Davidson FXR Super Glide II Base 1986
Harley Davidson FXR Super Glide II Base 1987
Harley Davidson FXR Super Glide II Base 1988
Harley Davidson FXR Super Glide II Base 1989
Harley Davidson FXR Super Glide II Base 1990
Harley Davidson FXR Super Glide II Base 1991
Harley Davidson FXR Super Glide II Base 1992
Harley Davidson FXR Super Glide II Base 1993
Harley Davidson FXR Super Glide II Base 1994
Harley Davidson FXR2 Base 1999
Harley Davidson FXR3 Base 1999
Harley Davidson FXRC Low Rider Chrome Base 1985
Harley Davidson FXRC Low Rider Chrome Base 1986
Harley Davidson FXRC Low Rider Chrome Base 1987
Harley Davidson FXRD Sport Glide Grand Touring Base 1986
Harley Davidson FXRDG Disc Glide Base 1984
Harley Davidson FXRS Low Glide Base 1984
Harley Davidson FXRS Low Glide Base 1985
Harley Davidson FXRS Low Glide Base 1986
Harley Davidson FXRS Low Glide Base 1987
Harley Davidson FXRS Low Glide Base 1988
Harley Davidson FXRS Low Glide Base 1989
Harley Davidson FXRS Low Glide Base 1990
Harley Davidson FXRS Low Glide Base 1991
Harley Davidson FXRS Low Glide Base 1992
Harley Davidson FXRS-Conv Low Rider Sport Convertible Base 1990
Harley Davidson FXRS-Conv Low Rider Sport Convertible Base 1991
Harley Davidson FXRS-Conv Low Rider Sport Convertible Base 1992
Harley Davidson FXRS-Conv Low Rider Sport Convertible Base 1993
Harley Davidson FXRS-Conv Low Rider Sport Convertible Base 1994
Harley Davidson FXRS-SP Low Rider Sport Base 1986
Harley Davidson FXRS-SP Low Rider Sport Base 1987
Harley Davidson FXRS-SP Low Rider Sport Base 1988
Harley Davidson FXRS-SP Low Rider Sport Base 1989
Harley Davidson FXRS-SP Low Rider Sport Base 1990
Harley Davidson FXRS-SP Low Rider Sport Base 1991
Harley Davidson FXRS-SP Low Rider Sport Base 1992
Harley Davidson FXRS-SP Low Rider Sport Base 1993
Harley Davidson FXRT Sport Glide Base 1984
Harley Davidson FXRT Sport Glide Base 1985
Harley Davidson FXRT Sport Glide Base 1986
Harley Davidson FXRT Sport Glide Base 1987
Harley Davidson FXRT Sport Glide Base 1988
Harley Davidson FXRT Sport Glide Base 1989
Harley Davidson FXRT Sport Glide Base 1990
Harley Davidson FXRT Sport Glide Base 1991
Harley Davidson FXRT Sport Glide Base 1992
Harley Davidson FXST Softail Standard Base 1984
Harley Davidson FXST Softail Standard Base 1985
Harley Davidson FXST Softail Standard Base 1986
Harley Davidson FXST Softail Standard Base 1987
Harley Davidson FXST Softail Standard Base 1988
Harley Davidson FXST Softail Standard Base 1989
Harley Davidson FXST Softail Standard Base 1990
Harley Davidson FXST Softail Standard Base 1991
Harley Davidson FXST Softail Standard Base 1992
Harley Davidson FXST Softail Standard Base 1993
Harley Davidson FXST Softail Standard Base 1994
Harley Davidson FXST Softail Standard Base 1995
Harley Davidson FXST Softail Standard Base 1996
Harley Davidson FXST Softail Standard Base 1997
Harley Davidson FXST Softail Standard Base 1998
Harley Davidson FXST Softail Standard Base 1999
Harley Davidson FXSTB Night Train Base 1999
Harley Davidson FXSTC Softail Custom Base 1986
Harley Davidson FXSTC Softail Custom Base 1987
Harley Davidson FXSTC Softail Custom Base 1988
Harley Davidson FXSTC Softail Custom Base 1989
Harley Davidson FXSTC Softail Custom Base 1990
Harley Davidson FXSTC Softail Custom Base 1991
Harley Davidson FXSTC Softail Custom Base 1992
Harley Davidson FXSTC Softail Custom Base 1993
Harley Davidson FXSTC Softail Custom Base 1994
Harley Davidson FXSTC Softail Custom Base 1995
Harley Davidson FXSTC Softail Custom Base 1996
Harley Davidson FXSTC Softail Custom Base 1997
Harley Davidson FXSTC Softail Custom Base 1998
Harley Davidson FXSTC Softail Custom Base 1999
Harley Davidson FXSTS Springer Softail Base 1988
Harley Davidson FXSTS Springer Softail Base 1989
Harley Davidson FXSTS Springer Softail Base 1990
Harley Davidson FXSTS Springer Softail Base 1991
Harley Davidson FXSTS Springer Softail Base 1992
Harley Davidson FXSTS Springer Softail Base 1993
Harley Davidson FXSTS Springer Softail Base 1994
Harley Davidson FXSTS Springer Softail Base 1995
Harley Davidson FXSTS Springer Softail Base 1996
Harley Davidson FXSTS Springer Softail Base 1997
Harley Davidson FXSTS Springer Softail Base 1998
Harley Davidson FXSTS Springer Softail Base 1999
Harley Davidson FXSTSB Bad Boy Base 1995
Harley Davidson FXSTSB Bad Boy Base 1996
Harley Davidson FXSTSB Bad Boy Base 1997
Harley-Davidson FXRPF Police Base 1985
Harley-Davidson FXRPF Police Base 1986
Harley-Davidson FXRPF Police Base 1987
Harley-Davidson FXRPF Police Base 1988
Harley-Davidson FXRPF Police Base 1989
Harley-Davidson FXRPF Police Base 1990
Harley-Davidson FXRPF Police Base 1991
Harley-Davidson FXRPF Police Base 1992
Harley-Davidson FXRPF Police Base 1993
Harley-Davidson FXRPF Police Base 1994
Harley-Davidson FXRPF Police Base 1995