PROGRESSIVE SKU: T14-669280

Progressive Fork Cartridge Kit - 1997-2013 Harley-Davidson

$593.95
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About Progressive

Progressive Suspension has focused exclusively on American V-twin suspension since 1982, and its Monotube fork cartridges and 400/970/970G shock series are among the most common upgrades on baggers and Softails. For most riders the stock rear shock is the single worst part on the bike — this is the fix.

This Progressive Fork Cartridge Kit offers a comprehensive upgrade for 1997-2013 Harley-Davidson models, replacing all OEM fork internals. It features advanced gas-charged monotube damper cartridges paired with custom-tuned fork springs. Riders will experience a dramatic improvement in front-end control, stability, and comfort.

Why riders pick this

  • Replaces all OEM fork internals
  • Gas-charged monotube damper cartridges
  • Custom-tuned fork springs (stock or lowered)
  • Reduces front brake dive and improves stability
  • Enhances cornering grip and control
  • Improves bottoming resistance

For Harley-Davidson riders looking to extract more performance from their 1997-2013 models, this Progressive Fork Cartridge Kit is a game-changer. The stock front end on many of these bikes can feel soft, especially during aggressive riding or under heavy braking. This kit addresses those issues head-on, delivering a firm yet compliant ride that inspires confidence on any road.

Transform Your Front End

  • Complete replacement for all OEM fork internals
  • Gas-charged monotube damper cartridges for consistent performance
  • Custom-tuned fork springs in stock and lowered options
  • Significantly reduces front brake dive
  • Improves front-end stability and cornering grip
  • Enhanced resistance to bottoming out

Tailor Your Ride Height

One of the key advantages of this Progressive kit is the flexibility it offers. Included are options for both stock-height and lowered fork springs, allowing you to fine-tune your Harley's stance. Whether you're aiming for improved ground clearance or a more aggressive, low-slung look, this kit provides the components to achieve your desired setup while delivering superior handling characteristics across the board.

Specifications

  • Brand: Progressive
  • Manufacturer Part #: 31-2546
  • Category: Suspension / Fork Cartridge Kits
  • Weight: 10 lb
  • WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov

Common questions

Does this kit replace the entire fork internals?

Yes, this Progressive kit is a complete replacement for all OEM fork internals, including the damper cartridges and fork springs.

Do I get a choice of spring rates or ride heights?

Yes, this kit includes custom-tuned fork springs with options for both stock-height and lowered ride configurations.

Will this fit my specific 1997-2013 Harley-Davidson model?

This kit is designed for 1997-2013 Harley-Davidson models. For precise fitment, always verify compatibility with the Shop by Bike tool for your exact year and model.

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.
BRANDProgressive
TYPEFork Cartridge Kits
SKUT14-669280
WEIGHT10.0 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.85
75 RATINGS
5★ 66
4★ 7
3★ 2
2★ 0
1★ 0
✓ VERIFIED
Mar 19, 2017

Quality Product

I recently installed a set of monotubes on my 2013 FLTRX. The suspension installs easily but I strongly recommend using your manufacturer's service manual in order to avoid any issues with the disassembly or reassembly.<br /><br />I bought the 2inch lowering kit but chose to only lower it a little over an inch. This is accomplished by fine tuning the setup with the supplied preload clips. I ride 2-up often so I chose not to "slam" the front end but still closed the gap between the fairing and front fender a noticeable amount.<br /><br />Satisfied with my purchase and quick delivery.

— Ryan R
✓ VERIFIED
Mar 27, 2020

Performance Bagger

Don’t bother pumping up your motor if you’re not going to build a suspension that can keep up with the added power. I did motor work first just to find out that my stock suspension was not meant for the added power. A little shaky at high speeds and wandering through sweepers not to mention nose diving when braking for tight corners. <br /><br />I added a rear stabilizer, 944’s, and Heavier fork oil and things got a lot better but not where I wanted it. Still had too much brake dive and liked to wander around in high speed sweepers. <br /><br />I added a front stabilizer and found it tightened things up a bit but that outdated hydro front end was still the weak link. <br /><br />Installed the Monotubes which was not very difficult at all on a Road King (No Fairing to deal with). I’m happy to say that my motor is finally not out running my suspension. No Brake Dive, No wandering through sweepers, and straight as an arrow at higher speeds. In 09 they made good improvements to the frame but they should have contracted the suspension out to progressive. <br /><br />Thanks PS and RZ for getting these Monotubes out to me so I could finally get my bike dialed in!

— Dwayne N
✓ VERIFIED
Jul 29, 2019

solid and firm

installed on 2013 FLHR.. 200lb solo rider.. debated and read alot of reviews before this purchase.. installed new 21 front and 17 rear.. (front end rise was 1") -kit dropped front end 1" and used 1 spacer for weight. front end now feels very heavy. ride is firm but not harsh.(did not like this ride) -lowered back air to 10lb and now front feels better balanced..bars now feel to far forward as well as windscreen is lowered.. bike feels planted, wheel does not wander and tracks well.. no issues with speed wobble, slow speed turn is slower, but still ok.. if i was to do over i would order standard monotube..

— brett w
✓ VERIFIED
Mar 22, 2019

Great ride

I’m really happy. My 2006 roadking rides sooo much better. Wish I would’ve done this upgrade sooner. Easy to follow install instructions. I did have to call support for a question. Good customer service with progressive. ??

— Mitchell L
✓ VERIFIED
Nov 4, 2017

ride

the progressive monotube cartridge kit for harley is well worth the cost it has really made a difference in the ride and handling of the bike 2004 ultra 112,000 also i replaced the rear shocks with progressive 412 better than new. also revilla great service and friendly

— gene s
✓ VERIFIED
Jan 18, 2020

Great product

I recommend to all who love their baggers and want better handling. Best upgrade so far.

— Ryan H