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Key Takeaways
- Longer fork tubes generally increase ride height, improving the aggressive chopper stance but may complicate handling.
- Compatibility varies significantly; selecting a kit tailored to your Harley model ensures fit and function.
- Durability features like hard chrome finishes boost longevity, especially important for prolonged riding or harsh environments.
- Installation difficulty ranges from simple DIY to requiring professional help, depending on tube length and model specifics.
- Price and included components vary; kits with seals and detailed instructions tend to offer better value.
| Extended Fork Tube Kit +6″ 39mm for Harley Sportster/Dyna Narrow Glide | ![]() | Best for moderate height increase and handling boost | Compatibility: Harley Sportster and Dyna Narrow Glide | Diameter: 39mm | Extension: +6 inches | VIEW ON AMAZON | See Our Full Breakdown |
| Extended Fork Tube Kit +8″ 35mm for Ironhead Sportster (XL 75-83) & Super Glide (FX 76-83) | ![]() | Best for vintage Harley upgrades with significant lift | Compatibility: Ironhead Sportster XL 75-83, Super Glide FX 76-83 | Extension Length: 8 inches | Diameter: 35mm | VIEW ON AMAZON | See Our Full Breakdown |
| Extended Fork Tube Kit +8″ 39mm for Sportster/Dyna Narrow Glide | ![]() | Premium durability and OEM fit for modern Harley models | Fitment: All 87-2015 Sportster XL (excluding 96-03 XL1200S), 87-94 FXR, 91-05 FXD Dyna (excluding 00-05 FXDX, FXDXT) | Length: 33 inches | Finish: Hard chrome | VIEW ON AMAZON | See Our Full Breakdown |
| Extended Fork Tube Kit +4″ 35mm for Ironhead Sportster (XL 75-83) & Super Glide (FX 76-83) | ![]() | Best for durable, precise fit on vintage models | Fitment: Ironhead Sportster 1975-1983, Super Glide FX 1976-1983 | Length: 27.25 inches | Finish: Hard chrome | VIEW ON AMAZON | See Our Full Breakdown |
| extended fork tubes for chopper motorcycle | Compatibility | Diameter | Fitment | Length |
|---|---|---|---|---|
| Extended Fork Tube Kit +6" 39m | Harley Sportster and Dyna Narrow Glide | 39mm | — | — |
| Extended Fork Tube Kit +8" 35m | Ironhead Sportster XL 75-83, Super Glide FX 76-83 | 35mm | — | — |
| Extended Fork Tube Kit +8" 39m | — | — | All 87-2015 Sportster XL (excluding 96-03 XL1200S), 87-94 FXR, 91-05 FXD Dyna (excluding 00-05 FXDX, FXDXT) | 33 inches |
| Extended Fork Tube Kit +4" 35m | — | — | Ironhead Sportster 1975-1983, Super Glide FX 1976-1983 | 27.25 inches |
More Details on Our Top Picks
Extended Fork Tube Kit +6″ 39mm for Harley Sportster/Dyna Narrow Glide
This kit stands out for providing a manageable 6-inch extension that elevates the ride height without overly compromising steering. Designed specifically for Harley Sportster and Dyna Narrow Glide models, it offers a straightforward upgrade for experienced DIYers. Compared with longer options, this kit preserves better handling characteristics, making it ideal for riders who want a noticeable stance change without the handling tradeoffs of more extreme lifts. However, it may require additional modifications for installation and isn’t suitable for stock suspension setups that haven’t been reinforced for increased travel.
Pros:- Increases front suspension travel for enhanced handling
- Compatible with popular Harley models
- Relatively easy for seasoned DIYers to install
Cons:- May require additional modifications for proper fit
- Not suitable for stock suspension without adjustments
Best for: Experienced Harley owners seeking a balance between height and handling
Not ideal for: Riders looking for a dramatic lift or those with stock suspension setups
- Compatibility:Harley Sportster and Dyna Narrow Glide
- Diameter:39mm
- Extension:+6 inches
Our verdict“A solid choice for those wanting a noticeable yet manageable lift on Harley Sportster/Dyna models.”
Extended Fork Tube Kit +8″ 35mm for Ironhead Sportster (XL 75-83) & Super Glide (FX 76-83)
This kit offers a substantial 8-inch extension tailored for older Harley models, making it ideal for vintage bike enthusiasts. Its compatibility with Ironhead Sportsters and Super Glides from the late 70s and early 80s means it’s suited for restoration or custom builds that aim for a more aggressive stance. Its durability and durable construction are notable, but installation may demand professional expertise to ensure proper handling and safety. Compared with shorter kits, this one provides more dramatic height but could alter handling characteristics if not installed correctly, especially on models with original suspension setups.
Pros:- Provides a dramatic 8-inch lift for a bold look
- Compatible with popular vintage Harley models
- Durable construction for long-term use
Cons:- Installation often requires professional help
- Potential handling issues if not installed properly
- Limited to specific year models
Best for: Vintage Harley riders wanting a significant lift and improved suspension travel
Not ideal for: Modern Harley models or riders not comfortable with complex installation
- Compatibility:Ironhead Sportster XL 75-83, Super Glide FX 76-83
- Extension Length:8 inches
- Diameter:35mm
Our verdict“Best suited for vintage Harley owners aiming for a radical stance upgrade with the right installation expertise.”
Extended Fork Tube Kit +8″ 39mm for Sportster/Dyna Narrow Glide
This kit emphasizes durability with a hard chrome finish and precision machining, designed for Harley models from 1987 to 2015. Its inclusion of a fork seal set makes installation more straightforward for experienced mechanics. Compared to other options, it offers a balance of modernization and longevity, but its compatibility is limited to specific years, excluding some newer or older models. The 8-inch extension gives a significant height boost, which can influence handling, so proper setup is essential. It’s ideal for riders prioritizing durability and OEM standards.
Pros:- Hard chrome finish resists corrosion
- Precisely machined to OEM specifications
- Includes fork seal kit for easier installation
Cons:- Limited compatibility to certain years
- May require professional installation
Best for: Modern Harley owners seeking a durable, high-quality upgrade
Not ideal for: Vintage or non-standard Harley models outside specified years
- Fitment:All 87-2015 Sportster XL (excluding 96-03 XL1200S), 87-94 FXR, 91-05 FXD Dyna (excluding 00-05 FXDX, FXDXT)
- Length:33 inches
- Finish:Hard chrome
Our verdict“A premium option for riders who want a durable, OEM-like upgrade for their mid-2000s Harley models.”
Extended Fork Tube Kit +4″ 35mm for Ironhead Sportster (XL 75-83) & Super Glide (FX 76-83)
This set offers a 4-inch extension, focusing on durability and precise OEM fit for Ironhead Sportsters and Super Glides of the late 70s and early 80s. Its hard chrome finish and precise machining ensure smooth operation and resistance to corrosion, making it suitable for riders who want a reliable upgrade without significantly altering handling. Compared with longer kits, this option maintains a more conservative lift but still improves suspension travel and stance. The heavy weight and model-specific fit mean it’s best suited for those with a clear upgrade plan and installation skills.
Pros:- Durable hard chrome finish
- Precisely machined for OEM compatibility
- Includes fork seal kit for easy installation
Cons:- Limited to specific models and years
- Heavy weight may impact handling slightly
Best for: Vintage Harley owners looking for a durable, exact-fit upgrade
Not ideal for: Modern Harley models or those seeking a dramatic lift
- Fitment:Ironhead Sportster 1975-1983, Super Glide FX 1976-1983
- Length:27.25 inches
- Finish:Hard chrome
Our verdict“Ideal for vintage Harley owners who want a reliable, OEM-quality upgrade with a subtle lift.”

How We Picked
I based this selection on a combination of factors including compatibility with popular Harley models, length extensions that meaningfully alter ride height, durability features like chrome finishes, and user-reported ease of installation. I prioritized products that clearly specify fitment and include necessary hardware, as well as those with a proven track record for quality and longevity. Price was a secondary consideration, with a focus on value for the features offered.| extended fork tubes for chopper motorcycle | Compatibility | Fitment |
|---|---|---|
| Extended Fork Tube Kit +6" 39m | Harley Sportster and Dyna Narrow Glide | — |
| Extended Fork Tube Kit +8" 35m | Ironhead Sportster XL 75-83, Super Glide FX 76-83 | — |
| Extended Fork Tube Kit +8" 39m | — | All 87-2015 Sportster XL (excluding 96-03 XL1200S), 87-94 FXR, 91-05 FXD Dyna (excluding 00-05 FXDX, FXDXT) |
| Extended Fork Tube Kit +4" 35m | — | Ironhead Sportster 1975-1983, Super Glide FX 1976-1983 |
Factors to Consider When Choosing Extended Fork Tubes For Chopper Motorcycles
Selecting the right extended fork tubes hinges on your motorcycle model, desired ride height, and riding style. Longer tubes can dramatically change the stance and handling, so understanding your bike’s compatibility and your riding priorities is key. Consider whether you prioritize durability, ease of installation, or the extent of height increase. The following sections break down what features to look for based on your specific needs.Model Compatibility
The first step is verifying that the fork tubes are designed for your Harley’s model and year. Installing incompatible tubes can lead to fitment issues and compromised safety. Focus on kits explicitly listed for your bike to avoid unnecessary modifications or installation problems.
Extension Length and Ride Height
The extension length directly affects your bike’s stance and handling. Shorter extensions like 4-6 inches generally provide a subtle height boost and are easier to install, while 8-inch kits dramatically alter the look but may require professional setup and adjustments to steering geometry. Decide how much of a change you want and choose accordingly.
Material and Finish
Durability is vital, especially if you ride frequently or in harsh conditions. Hard chrome finishes and chrome-plated steel tubes offer excellent corrosion resistance and longevity. Consider the environment you ride in when choosing materials to ensure your upgrade lasts.
Installation and Budget
Some kits are straightforward for experienced DIYers, while others may need professional installation due to length or complexity. Budget also plays a role; while premium options cost more, they often provide better durability and fit. Balance your skill level and budget to select the best kit for your needs.
Frequently Asked Questions
Are extended fork tubes safe for my Harley?
Extended fork tubes can be safe if they are the correct size and properly installed on compatible models. They fundamentally change the suspension geometry, so choosing the right length and ensuring professional installation if needed is crucial. Incorrect installation or incompatible parts may lead to handling issues or safety concerns.
Will longer fork tubes affect my bike’s handling?
Yes, increasing the length of your fork tubes raises the front end, which can alter steering response and stability. While a moderate extension often improves the chopper aesthetic and ride comfort, excessive length might cause slower steering and instability, especially at high speeds. It’s important to consider your riding style when selecting an extension length.
Do I need to modify my motorcycle for these kits?
Depending on the extension length and your bike model, some modifications may be necessary, such as adjusting the front wheel alignment or upgrading the steering head. Shorter kits typically require fewer changes, but longer ones might need additional parts or professional setup to maintain safety and performance.
Are these kits easy to install myself?
Ease of installation varies by kit and your mechanical experience. Shorter, simpler kits like the 4-6 inch options are often manageable for experienced DIYers, while longer, more complex kits like 8-inch extensions may require professional assistance to ensure proper fitment and handling. Always follow manufacturer instructions carefully.
How do I choose between these different length kits?
The choice depends on your desired aesthetic and riding needs. If you want a subtle stance change, the 4-inch or 6-inch kits are suitable. For a more aggressive, chopper-style look, the 8-inch kits provide a dramatic lift but may impact handling. Consider your skill level, intended use, and whether you prefer a quick upgrade or a more involved customization process.
Conclusion
If you’re a rider who values a moderate upgrade with straightforward installation, the Extended Fork Tube Kit +6″ for Harley Sportster/Dyna offers a balanced approach. Vintage Harley enthusiasts seeking a bold stance should consider the +8″ kit for Ironhead Sportsters and Super Glides, but be prepared for professional help. For riders prioritizing durability and OEM fit in modern models, the +8″ hard chrome kit for 87-2015 Harley models makes an excellent choice. Finally, those who want a reliable, OEM-quality upgrade for vintage bikes can opt for the +4″ kit for Ironhead and Super Glide. Matching your riding style, model compatibility, and installation skills will lead to the best overall upgrade.
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