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Progressive Suspension Stock Length Fork Spring Kit

J&P Cycles Part Number: 137-671

Manufacturer Part Number: 11-1153

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Description for Progressive Suspension Stock Length Fork Spring Kit

• The 'Original' Progressive Rate Fork Springs soak up the small road bumps, yet are firm enough to absorb the molar-rattling ones

• Spring rates have been chosen to reduce front end "dive" during braking, yet still provide excellent ride comfort

• Lifetime fork spring warranty

• Progressive Rate Fork Springs have several advantages over straight rate springs, advantage of a rising rate resistance to compression this helps in varying road conditions from small road imperfections to pothole filled roads

• The benefit of this is progressive spring rate is that the spring can be soft enough at the start of the travel to offer a "plush" ride, yet be firm enough at the end of the travel to soak up the big bumps

• Ideal performance improvement when installing chrome lower forks

• They eliminate sag, reduce nose dive under braking, improve stability and increase ride comfort

• Sold in sets that include correct spacers for the application

Product Specs

Product Specs for Progressive Suspension Stock Length Fork Spring Kit

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Fitment Questions?

With over 750 years of experience combined, our tech staff has the answers!

Compatible Models

Harley-Davidson® Models

  • Dyna Super Glide Sport EFI FXDXI : 2004–2005
  • Dyna Super Glide Sport FXDX : 2000–2005
  • Dyna Super Glide T-Sport FXDXT : 2001–2003
Customer Reviews

Customer Reviews for Progressive Suspension Stock Length Fork Spring Kit

Overall Rating

5 out of 5 stars (based on 71 reviews)

5 stars (64)

4 stars (5)

3 stars (1)

2 stars (0)

1 star (0)

0 stars (1)


Much better than stock


These springs are the perfect match for the progressive rear shocks I purchased also, great suspension set up for my FXDB..


Great purchase! JP customer`s service was awesome and shipping and delivery time was impressive. TKS!


they work great in my Dyna by adding stability in hard riding and a smooth ride on the hiway.


Bike rides better than when it was new. Rode the stelvio pass 2 days after installation and couldnt have asked for a better ride


I was looking for more stability but what I found was a smoother ride. I didn't think my 07 DYNA rode rough before but the difference is like night and day. What a smooth ride! Very easy to install. I used a wine cork and a BBQ skewer to measure the required amount of oil. I don't think I ever bought a Harley part for under $100 that made as much difference.


Cheap upgrade for the improvements gained. The springs work so much better than stock, it makes me resent H-D for spec'ing out the bike with such cheapness. Although a pretty straight forward job it does require a stable jack/lift and a good relialbe helper. My awesome girlfriend was paitent and stong and assertive when needed. You'll be lucky to have half of what I had :) Getting the fork caps back on was the most difficult part. Get a good fork-cap socket and an extension and you'll have a better handle to put down the required force to get the caps re-threaded. I was pushing down on the assembly while she used a wrench to twist on the fork cap socket. Good luck and enjoy the smoother more confident stability of your new fork :)


put these on a 2013 FXDWG. they stopped the front fork dive I was getting at red lights. Bike front forks were dipping when I would come to a stop. had a lot of spring action. The Progressive springs stopped 90% of it. great buy!


say goodbye to front end dive and hello to improved handling


Easy to install. Instructions were clear and bike rides better. No more front end sag coming to a stop. Took me a couple days, but I've never pulled the front end off so had a bit of a learning curve to overcome and needed some tools for my 2010 fxdf.


This kit made a big improvement in the ride,worth every penny.A lot better ride than what I expected.


Paired this up with the progressive 444's on my dyna and man I love the way it feels now


Made my ride feel much more solid in the front end. It handles small bumps and braking well, but the big bumps feel much more manageable without bottoming out.


great service fast delivery.

South Bound

Excellent, The new springs took my front frame sag right out. Now the motorcycle sits and rides level, as it should. The most excellent part was that the Progressive Suspension tech guys even answered a question that had arisen. Another great part is that the spacers are included and already cut to length, for your application! The Springs have instilled a much more controlled feel as well. Hey, Not That Big a Deal to install. Get a Pair!

Don Biddinger

quick delivery, nice upgrade from stock, I recommend this product


[These]springs are fine.


Replaced old OEM springs. Big difference, should of did it long ago....


Worked well.


much better then stock , compliments the rear progressive suspension


Progressive is the only way to go.


great product. I've used it many times before.


Great product with a very good price!! Fits perfectly.


Great all round springs for my mixed riding - sometimes one up, other times two-up, sometimes with luggage etc, all on rough Aussie roads. Fitted in conjunction with Intiminators and the result is perfect. Train crossings are no longer a motocross event. Front end feels more grounded at speed too.


These spring made a HUGE improvement to the handling and feel of the bike. Great investment


As many of the previous reviews have stated, much nicer ride, My 03 wide glide feels great!!!


I bought these springs for 41mm wide glide forks. I bought them because they are "stock height". These springs are absolutely NOT stock height. They are packaged by Progressive Suspension with two pieces of PVC pipe that you have to cut to size and use as spacers. This is all described in the manufacturers installation instruction. On older models, like my forks, you have to remove the spring loaded oil blocker on the fork top nut and plug the hole with something of your own making. If you trust your front springs to be spaced up to stock height by two pieces of PVC pipe then these will work great. If you would rather have a quality product that meets stock specs I would buy other springs. Returning these immediately.


Nice set of springs. Mine didn't come with the pvc spacers- made some to spec length. OK ride. Replaced these with Progressive mono cartridges. Way better ride and handling.


Great product. After installation, bike rides and handles like a new one.


purchased 6/14 rides much better, does not bottom out anymore. direction clear.


Absolutely the very best in suspension products ! Nobody comes close to Progressive. Don't waste your money on anything less...period !


It's a no brainer. If you want a better ride you use better parts ! Progressive is second to none. Better ride, better handling, and the confidence that it will stay that way for the life of your bike !

clark ady

easy to assemble


Installation was quick and easy, ride has improved at highway speeds, and that railroad track around the corner from my house no longer bottoms out the front end.


Mounted the kit one month ago on my HD FLSTC (build 1996). I used 8 Cm spacers and put Castrol W20 forkoil in it. Fork is a little bit less comfortable than with OEM springs but much more stable! Not so easy to install, since both forklegs have to be demounted.


Progressive springs are the best for suspension performance.


I needed a more firm front end on this big bike, and whether the forks were worn out or the springs inside were dying, I added these springs into my rebuild and they perform exactly the way I hoped for. The springs aren't expensive but the performance is flawless so far. Excellent part, excellent value, suggest for anyone


Great product I would buy it again.


This is an awesome product that made my bike the comfortable cruiser!


can't go wrong with these


great springs bike handels a whole better now.and thanks to J&P great prices.


these spring's work great. no more nose diving when you are breaking. or when you go into a curve alittle to hot.and what great price.only at j&p can you get such a great deal.


These springs are great. They come with PVC pipe spacers because the springs are shorter than the stock springs I had in my 1200C. They are stiff but I don't bottom the things out any more. I'm a big guy so these, along with Progressive rear shocks, have made it so I can haul all gear and myself with no problems. Very easy to install.


I ordered front springs for my Harley Davidson, I spoke with a customer service rep. that recommended this type of spring for the problem I have been having.He was very helpful and informative. They arrived in less than a week. I'm very satisfied with the purchase I made.Thanks J&P cycles.


I put these in my '93 Sporty Hugger, also Race Tech gold valve emulators, and Progressive Suspension 412 shocks on the rear. Wow, what a difference ! So much smoother over the rough stuff, less brake nose dive, turns in better for corners. Get rid of your stock suspension - you'll love it !!!


Amazing difference! These springs were easy to change & absorb small to medium large bumps and potholes almost as good as my Harley Roadking. Big potholes are still rough but it is about as good as you can possibly get out of a Sportster; they are still light bikes. Oh- got rid of stoplight nosedive totally & yes- they have PVC pipe spacers but if its strong enough to hold thousands of psi of water pressure; I'm sure it can support a 520 Pound Sportster and rider...


works great


Stiffens up front forks and reduces dive. Works well with Progressive rear shocks.

Gene King

Perfect fit. Had good instruction sheet. Performed well.



Michael Gough

very good kit, improved the ride a lot.


I went with these after trying the Heavy Duty version. These are perfect. I combined them with Ricor Intimidators for a great handling Sportster...

Sgt Patriot

Kit came with correct spacer need for stock application. 5 Stars


These springs were quite an upgrade from the original on my FXR. I used these springs along with the Race Tech Emulator Gold Valve and the difference now is incredible!


Great product. Came with everything needed. Easy to follow instructions. Very satisfied with fork springs. No more front end diving when braking.


Best thing i did, don't know why i waited so long


These made a great difference in the way the bike handles.


One of the best upgrade I could do to my 07 XL low. I never had to worry about bottoming out anymore.


These really improved the handling and poise of my sportster, combined with 13" 412 rear shocks. Solid, not too stiff, they reduced braking dive and eliminated the wallowing feel of the bike on tight switchbacks. Not a cush ride, more a performance feel.


Ă“timo! recomendo.


Great upgrade, the bike handles so much better!


Simple to install if you have the 1 3/8" socket, breaker bar and a way to lift the front wheel up. I was pleased with the springs they are not as stiff as the harley oem springs they decompress and absorb the road a lot less violently than the stock springs. That being said these will make you really hate your stock rear shocks which do more of the work so my opinion get new rear shocks before worrying about the front!


These springs were used in conjunction with Progressive shocks on a 2005 Sportster. This really improves the ride of this bike over the stock provisions. Well worth the money.


Much better ride


As advertised. I had greater spacer step-up with the stock springs than the Progressives. Could barely get the caps on, and I still had braking dive. After putting in the Progressive kit, viola! no more nose dive.


Excellent product, good instructions, well packaged with everything that is required


I was skeptical how well these could work, but was surprised how well they did perform. The stock springs were really bad "performance wise". Put a set of Heavy Duty 412's on the rear. Took the harshness out of the piss poor stock suspension. Well worth the money front and rear.




The perfect product


Helped front forks alot


Awesome springs! Put them in my 2004 Sportster XL 1200C. Huge improvement over stock! No more worrying about every little dip or pot hole, and bottoming out. Handling improved drastically in the turns and on the highway, not as much wobble, nice and solid now! Can't believe what I was riding on before! Highly recommend these springs! I'm extremely happy!!

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