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Progressive Suspension 31-2500 Mono-Tube Fork Cartridge Kit

4.8 out of 5 stars 53 customer reviews
| 4 answered questions

Price: $319.96 & FREE Shipping. Details
Only 5 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
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  • This kit contains a pair of high-performance, gas charged monotube fork cartridges complete with a set of fork springs
  • Improved resistance to front brake dive
  • Improved front end stability
  • Improved cornering
  • Improved bottoming control
$319.96 & FREE Shipping. Details Only 5 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Progressive Suspension 31-2500 Mono-Tube Fork Cartridge Kit
  • +
  • Progressive Suspension 944 Ultra Touring Heavy Duty Shocks for Harley Davidson
  • +
  • Progressive Suspension 30-2000 Bagger Brace Touring Link Bolt On Chassis Stabilizer
Total price: $1,068.92
Buy the selected items together

Product Information

Technical Details

Brand Progressive Suspension
Model MonotubeKits
Item Weight 7 pounds
Product Dimensions 31 x 7 x 2 inches
Item model number 31-2500
Manufacturer Part Number 31-2500
OEM Part Number 31-2500
Vehicle Service Type street-cruiser-motorcycles

Additional Information

ASIN B002KO5W66
Customer Reviews
4.8 out of 5 stars 53 customer reviews

4.8 out of 5 stars
Best Sellers Rank #99,354 in Automotive (See top 100)
#22 in Automotive > Motorcycle & ATV > Parts > Suspension > Shocks
#1,510 in Automotive > Motorcycle & ATV > Parts > Body & Frame Parts
Shipping Weight 7.9 pounds (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available December 18, 2009

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

Enjoy improved front end control and ride comfort by converting your dual damper rod or damper rod/cartridge forks found on 02-05 models to true cartridge forks. This kit contains a pair of high-performance, gas charged monotube fork cartridges complete with a set of fork springs. Kit is a direct internal component replacement for all FLH, FLT models from 97-09. No modification to your forks are required. Improved resistance to front brake dive. Improved front end stability. Improved cornering. Improved bottoming control. Lifetime limited warranty. The very best in touring suspension performance.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
The ride is much better than stock, I still get brake dive under hard braking. I did not install any of the spacers and got a 1" drop to boot. This came as a recomendation from Progressive do to my weight (175lbs)_
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Verified Purchase
I put the progressive shocks on the back to eliminate the junk stock Harley air shocks, and realized the front was now lacking. This kit is the answer. It is easy to install, I did it in an afternoon. It eliminates the need for fork oil (just a small amount is required for lubrication) and the bike handles much better. 5 stars.....
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Verified Purchase
This is a great option for the Touring Bikes. I am a sport bike guy and normally I add stiffer springs and run 2.5 - 5 w heavier oil than stock. I normally have good results, but I opted to go with the Mono-Tubes based on reviews from people that upgraded from the mono-tube to other brand's more expensive options. They suggested that this option is 80% as good as the $1000 set-ups at a third of the price. I will say that the front end of my ElectraGlide feels every bit as good as my VFR with heavier springs and Gold Valve Emulators. Instillation was a breeze.

While you are doing this mod, go get some 10w fork oil and replace the stock 5w in the shocks with 10 oz. of the 10w. If you do both of these you will love your Harley again. I just got back from a 2200 mile road trip fully loaded 2-up and I may go with some 12.5w before the next epic road trip, but for tooling around town I really like the 10w.
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Verified Purchase
It's a lot of work to replace stock front fork springs, so go ahead and order replacement fork seal kit (1 needed for each fork), also order replacement fork bearing kit since you have to tear down to install this kit. Make sure your order a fork cap socket ( 1 3/8 inch on my 2001 Harley Roadglide) it's a tight fight under the handlebars for a regular socket wrench. You also need 10 oz of 10 weight fork oil to lube the progressive suspension.
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Verified Purchase
I was thinking of selling my bike cause of harsh ride .But after installing your product my bike rides better then new and even opted to get 940 shocks for rear. It`s amazing how well these products work. Why this set up doesn`t come from the factory at Harley is beyond me.Progressive R&D dept really does a nice job. The directions and fit was perfect you can`t go wrong. I highly recommend this product if you own a Harley.
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Verified Purchase
Definitely a better ride. I'm larger than most at 6'2 260 and I used both inserts on the springs to set the pre-load and its a little more than I needed. Going back in re-installing I would only use one insert clip. These in conjunction with the 944 I bought for the rear have changed this bikes handling immensely! Ride is more responsive to the road, and while a little stiffer it has given me much more confidence in its handling characteristics. no more hard breaking and getting that spongy feeling int the front.
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Verified Purchase
I don't think it gets much better then this for bagger front forks. These stop the front end from bottoming out or taking a nose dive when the front brakes are applied. Really improves the ride. To bad Harley can't afford to do this to begin with. I have installed these on four bikes now perfect with a set of 944 progressive rear shocks.
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Verified Purchase
Currently halfway on a coast to coast trip across the country and these suckers are the bees knees! SO much better/smoother than the stock HD shocks. I don't understand why HD can't do this as stock on $20K motorcycles!
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