PROGRESSIVE SKU: T14-613987

Progressive 412 Series Shocks - Harley-Davidson

$379.95
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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.

The Progressive 412 Series Shocks offer a robust suspension upgrade for Harley-Davidson models, providing improved handling and comfort at an accessible price point. Their durable double-wall steel construction ensures long-lasting performance.

Why riders pick this

  • Improves ride quality and handling
  • Durable double-wall steel construction
  • Nitrogen-charged for consistent damping
  • 5-position preload adjustment
  • Available in standard or heavy-duty spring rates

Featuring nitrogen gas charging, these shocks maintain consistent damping across a variety of riding conditions, from daily commutes to spirited canyon carving. The adjustable preload allows riders to fine-tune their setup for optimal comfort and control.

Performance and Adjustability

  • Double-wall steel damper body for enhanced durability
  • High-pressure nitrogen gas charged for consistent damping
  • Multi-stage velocity-sensitive damping for responsive control
  • 5-position cam-style preload adjuster for rider-specific tuning
  • Available with standard and heavy-duty progressive rate springs

Tailor Your Ride

These shocks are an ideal choice for riders looking to replace worn-out factory units or seeking a noticeable improvement in their bike's ride characteristics. The ability to adjust preload means you can easily compensate for varying loads, whether you're riding solo, two-up, or with luggage. Always verify your specific Harley-Davidson model and year for correct spring rates and mount configurations before ordering.

Specifications

  • Brand: Progressive
  • Manufacturer Part #: 412-4004B
  • Category: Suspension / Shocks and Struts
  • Weight: 10.4 lb
  • WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov

Common questions

Can I adjust the preload on these shocks myself?

Yes, the 5-position cam-style adjuster allows you to easily dial in the preload to match your weight and riding style, no special tools required.

What's the benefit of choosing a heavy-duty spring rate?

Heavy-duty spring rates are recommended for riders who frequently ride two-up, carry heavy luggage, or prefer a firmer ride for aggressive riding, providing better support and preventing bottoming out.

Do these shocks fit all Harley-Davidson models?

Progressive 412 Series shocks are available for many Harley-Davidson models, but spring rates and geometry vary. Please confirm fitment for your specific year and model before ordering.

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
TYPEShocks and Struts
SKUT14-613987
WEIGHT10.4 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.65
264 RATINGS
5★ 208
4★ 39
3★ 5
2★ 4
1★ 8
✓ VERIFIED
Apr 16, 2017

Big Man's Shock Absorbers

I installed these on my 2013 Harley Road Glide Ultra about two weeks ago. Being 6'4" tall and weighing 350 lbs I did quite a bit of studying and asking others before making my purchase. With about 300 miles on them I can honestly say WOW! what an upgrade. I opted for the heavy duty 13.5" version due to my heftiness. These have 4 settings for stiffness/sag I've settled on the second softest after trying them in settings 2 and 3 I found three to be a bit too rigid even with my weight. The only reason I didn't give them 5 stars is because Its impossible to rate the durability at this point. They ride great so far and if they hold up I'll rerate them to 5 stars. The only con is that having a fine pair of shocks on the back end makes the front end seem wimpy. Now I'm seriously considering the progressive heavy duty fork springs for the front. I hope this helps you make your decision.

— Christopher W
✓ VERIFIED
Mar 22, 2016

Buit for riding

These shocks are the real deal for the money. If you are running the stock seat on a touring bike, follow the weight instructions provided by Progressive Suspension. But if you are close to 250lbs or you have changed out your seat for one that puts you further back a little, go with the Heavy Duty ones because generally speaking more weight is placed towards the rear of the bike when you switch out seats. This is what I did and couldn't be happier. Riding over rail road tracks or other obstacles is not a consideration anymore. I don't bottom out, even at high speed and the increase in overall handling is well worth the cost. Much better than stock suspension. Also, I went taller by half an inch and I'm happy that I did. I put them on an 09 Road King Classic.

— FatMata F
✓ VERIFIED
Aug 20, 2014

great heavy duty shock

Replaced original air shocks on street glide. Now it's a much better ride for all 440 lbs of us and bike

— suds s
✓ VERIFIED
May 14, 2017

Best purchase

I'm a big guy 6'2 320lbs my wife is tiny 130lbs so I needed an upgrade the stock airshocks didn't cut it so I purchased the progressive 412s and wow it's a whole new bike I got the shock in a one inch longer length for added travel and by the way I ride a 2013 roadglide custom I recommend it to anybody that is large like me to get the shocks with the hd springs there is no more bottoming out and the ride is awsome

— Bill V
✓ VERIFIED
Mar 5, 2019

So smooth!

I weigh over 300 lbs (I know I'm fat) so I purchased the heavy duty, also bought the 13" for a little more cushion. Solo I ride it with one click on the preload, haven't had the chance to ride 2 up but the preload is real simple with the tool provided (kept in the saddlebag). The shocks are very responsive and make my ride so smooth! <br /><br />Install is super easy and can be done by yourself though I had a brother help to make sure the bike didn't tilt off the jack.<br /><br />$299 for these is a good price for it. Durability I'm assuming a 5 though I've only put about 750 miles on them so far. Washers provided allowed for it to fit perfectly and finish looks nice though my saddlebags cover them.<br /><br />My bike is a 2010 FLHX Street Glide.

— Keith J
✓ VERIFIED
Jul 25, 2018

Excellent option for the stock air shocks

They bolted right up. The settings range from single to 2 up long distance touring comfort. My wife Nd I always ride tigether 2 up. We found the 3rd notxh to be the most pleasant to cushion bumps but prevent bottoming out. Would def recommend !

— Nicholas R