When should I replace my motorcycle's fork seals?

You should replace them immediately if you see any signs of leaking oil on the fork tubes or lowers. It's also best practice to replace them anytime you have the front end disassembled, as old rubber can become brittle and fail.

What are the signs of worn-out fork springs?

The most common signs are a "spongy" feeling in the front end, excessive nose-diving when you apply the front brake, or the suspension bottoming out easily over bumps.

Can I ride with a leaking fork seal?

While you can for a short time, it's not recommended. Leaking fork oil can get on your brakes, reducing stopping power. It also causes poor handling and can lead to permanent damage to the internal fork components if the oil level gets too low.

Motorcycle Fork Components

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Til Death Cycles 39mm Extended Damper Tube Kit- Harley-Davidson Front End
29 reviews $104.95

Gigacycle Garage LeRoy Hooligan Tracker Complete Front End Kit 1982 & Up Harley-Davidson Sportster
1 review $1,895.00

Lowbrow Customs 39mm Tapered Fork Lowers - Aluminum
1 review $334.04

Timken Neck Post Bearing & Race Set Made in USA
17 reviews $28.14

Til Death Cycles 49mm Harley-Davidson Front End Extended Damper Tube Kit
5 reviews $119.12

Lowbrow Customs 39mm Tapered Fork Lowers - Black
$334.04

Lowbrow Customs 39mm Fork Shrouds - Black - 1987-Up - Harley-Davidson Sportsters
53 reviews $122.76

Lowbrow Customs 39mm Narrow Glide Fork Brace - Standard Width
3 reviews $149.96

Bare Knuckle Performance 49mm Mid Glide "The Clinch" Fork Brace - Raw
$299.00

British Standard Triumph Neck Bearing Conversion Kit | Fit Harley or Springer Front End to Triumph
34 reviews $72.00

Cycle Standard Universal Fork Boot Gaiter Set for 41mm Front Forks
11 reviews $43.45

Drag Specialties Neck Post Bearing and Race Set 1980-13 Harley-Davidson FLT/FLHT 99-13 FLTR/FLHR 60-86 FL/FX/FXWG 84-17 FXST/FLST 99-17 Dyna 82-21 XL
$30.11

V-Twin Manufacturing Tapered Neck Bearing Conversion Kit for 1952 - 1977 Harley-Davidson XL
7 reviews $76.57

Cycle Standard 39mm Fork Boot Gaiter Set for Harley Sportster's Front Forks
32 reviews $43.71

Lowbrow Customs 39mm Fork Shrouds - Raw Steel - Harley-Davidson Sportsters
20 reviews $122.58

Burly Brand Burly Lowboy Fork Lowering Kit - 39mm Sportster- See listing for Fitment
10 reviews $120.56 $133.95

Cycle Standard 39mm Damper Tube Kit - 9.5" - 1994-1996 Harley-Davidson Sportster XL 1995-2017 FXD OEM# 45925-94
$69.00

Koyo Bearings Neck Post Bearing & Race Set Made in Japan
$21.95

Lowbrow Customs PVC Spacer Kit For Extended 39mm Fork Tubes
1 review $12.96

Til Death Cycles 49mm Harley-Davidson Cartridge Eliminator Kit
2 reviews $178.28

Drag Specialties Lower Fork Slider Bushings - 39mm - 0.778" - Harley-Davidson OEM #W4546587
1 review $15.55

Til Death Cycles 39mm Harley-Davidson Cartridge Eliminator Kit
4 reviews $169.10

The Speed Merchant 49 mm Fork Preload Adjuster - Gold Finish
1 review $161.96 $179.95

The Speed Merchant 39 mm Fork Preload Adjuster - Black Anodized Finish
$152.96 $169.95

British Standard Stainless Steel Fork Seal Holders Triumph 1963 - 1967
8 reviews $150.03

Lowbrow Customs 39mm Narrow Glide Fork Brace - For Lowbrow Narrow Trees
3 reviews $149.96

The Speed Merchant 39 mm Fork Preload Adjuster - Raw Machined Finish
$143.96 $159.95

Lowbrow Customs PVC Spacer Kit For Extended 41mm Fork Tubes
$12.96

Drag Specialties Upper Fork Slider Bushings - 39mm - 0.588" - Harley-Davidson OEM #45461-87
2 reviews $15.55

Cycle Standard Fork Boot Gaiter Set for 1954-1970 Harley-Davisdson Ironhead Sportster XL Models OEM #46001-54
4 reviews $35.37

Drag Specialties 41mm Upper Fork Slider Bushing 1984-2010 Harley-Davidson FXST/C 1993-2005 FXDWG 86-17 FLST 84-13 FLHT 11-13 FXS OEM# 45940-84
$15.55

Drag Specialties 35mm Lower Fork Slider Bushing 1984-1987 Harley-Davidson FX/FXE/FXR 84-87 XL OEM# 45416-84
$14.51

Drag Specialties 35mm Upper Fork Slider Bushing 1984-1987 Harley-Davidson FX/FXE/FXR 84-87 XL OEM# 45413-84
$14.51

Drag Specialties 49mm Upper Fork Slider Bushing 2006-2017 Harley-Davidson Dyna 16-22 XL1200X/XS 14-17 FXSB 14-16 Dresser OEM# 4651601
$17.63

Drag Specialties 49mm Lower Fork Slider Bushing 2006-2017 Harley-Davidson Dyna 16-22 XL1200X/XS 14-17 FXSB 14-16 Dresser OEM# 4608001
$15.55

Drag Specialties 41mm Lower Fork Slider Bushing 1984-2010 Harley-Davidson FXST/C 1993-2005 FXDWG 86-17 FLST 84-13 FLHT 11-13 FXS OEM# 45866-84
$15.55

Lowbrow Customs PVC Spacer Kit For Extended 35mm Fork Tubes
$12.96

Cycle Standard Neck Post Bearing & Race Set - Imported
$12.99

Bare Knuckle Performance 49mm Mid Glide "The Clinch" Fork Brace - Gloss Black
$324.00

Bare Knuckle Performance 39mm Narrow Glide "The Clinch" Fork Brace - Gloss Black
1 review $299.00

Bare Knuckle Performance 39mm Narrow Glide "The Clinch" Fork Brace - Raw
$274.00

The Speed Merchant 39 mm Fork Preload Adjuster - Gold Finish
$152.96 $169.95

British Standard Stainless Steel Fork Seal Holders 1968-1970 Triumph
2 reviews $153.77

EMGO Triumph Rubber Fork Gaiters 1963-68 T120 Bonneville TR6 Tiger OEM #97-1645
7 reviews $26.53

British Standard Triumph Neck Roller Bearing Conversion - modern bearings for your old Triumph motorcycle
34 reviews $73.90

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