JAMES GASKETS SKU: 681-4419

James Gaskets Big Twin Fork Seal Kit - Late 39mm Forks Harley-Davidson

$25.95
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About James Gaskets

James Gaskets has supplied American V-twin gaskets, seals and O-rings for decades and is one of the most widely stocked names for Harley-Davidson engine, primary and transmission rebuilds. When a service manual calls for a specific gasket, James almost always has an exact-fit answer.

Leaking fork seals are more than just a mess; they compromise your ride quality and safety. This James Gaskets Big Twin Fork Seal Kit provides OEM-specification replacement seals and gaskets for late 39mm forks. It's a direct replacement solution to restore your front end's performance and appearance.

Why riders pick this

  • Fork seal kit for late 39mm forks
  • OEM-specification replacement seals
  • Designed for Harley-Davidson Big Twin models
  • Restores front end performance and prevents leaks

Engineered for big twin V-twin models equipped with late 39mm fork tubes, this kit delivers the quality and precision James Gaskets is known for. Each seal and gasket is manufactured to exact OEM specifications, ensuring a perfect fit and reliable, leak-free operation. Restoring your forks means a better handling bike and a cleaner garage floor.

Reliable Sealing for Your Front End

  • Complete fork seal kit for late 39mm fork tubes
  • OEM-specification gaskets and seals for a precise fit
  • Designed for compatible big twin Harley-Davidson models
  • Helps restore front suspension performance and prevent leaks

Fork Service and Installation Tips

Servicing your motorcycle's front forks can be a rewarding DIY project, but it does require careful attention to detail. While this kit provides the essential sealing components, a fork seal driver tool is highly recommended for proper installation. This tool helps seat the new seals evenly and correctly, preventing damage during assembly and ensuring optimal, long-term performance from your front suspension.

Specifications

  • Brand: James Gaskets
  • Manufacturer Part #: 45849-87
  • Length: 5.75 in
  • Width: 7.45 in
  • Height: 0.85 in
  • Weight: 0.252 lbs

Common questions

Will this kit fit my big twin with early 39mm forks?

No, this kit is specifically designed for late 39mm forks. Early 39mm forks use different seal sizes, so it's crucial to verify your fork tube year before ordering to ensure compatibility.

What is included in this fork seal kit?

The kit contains a complete set of gaskets and fork seals for both forks, all manufactured to OEM specifications to ensure a thorough and effective service.

Do I need any special tools for installing these fork seals?

While it's possible without, a fork seal driver tool is highly recommended for proper installation. It helps seat the seals correctly and prevents damage during the process.

Ordering from Vtwinbikers

  • Brand new, sourced through authorized US distribution — never used, never grey-market.
  • Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
  • Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
BRANDJames Gaskets
TYPEGaskets/Seals
SKU681-4419
WEIGHT0.25 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
14 RATINGS
5★ 14
4★ 0
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Oct 1, 2023

Excellent set

Excellent set for the price, easy to install, very durable products. I would recommend this set 10/10

— Eric S
✓ VERIFIED
Sep 11, 2023

Good quality

Breaking engine in right now and everything is holding tight. Very pleased

— Hawk R
✓ VERIFIED
Aug 28, 2023

Gasket set

Great gasket set, includes everything you need to reseal top end.

— James N
✓ VERIFIED
Jul 31, 2021

Quality parts in a timely manner

— Anonymous
✓ VERIFIED
Mar 29, 2021

Fit like it should, super quick shipping

— Anonymous
✓ VERIFIED
Mar 21, 2021

Gasket set seems to be of good quality. Everything fit just like oem gaskets and seals but made better lol. So far so good, Everything is nice a dry now.

— Anonymous