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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
For Your Every Summer RSVP, with Code: SUMMER15
Description
Progressive Harley-Davidson 412 Series Shocks 13.0in - ChromeExperience enhanced rear suspension performance with the Progressive Suspension 412 Series Shocks, model 412 4008B. Specifically designed for powersports applications, these shocks offer reliable twin tube construction with a robust steel body finished in sleek black for durability and style. Sold as a pair, these non adjustable rear shocks feature a gas charged internal design that ensures consistent damping for a smoother ride over varied terrain.
Experience enhanced rear suspension performance with the Progressive Suspension 412 Series Shocks, model 412-4008B. Specifically designed for powersports applications, these shocks offer reliable twin-tube construction with a robust steel body finished in sleek black for durability and style.Sold as a pair, these non-adjustable rear shocks feature a gas-charged internal design that ensures consistent damping for a smoother ride over varied terrain. The coilover springs included have a dual spring rate of 75/120 lbs. per inch and feature adjustable preload, allowing you to fine-tune your suspension setup to match your riding style and load requirements.
Both the upper and lower mounts come with eyelets fitted with black polyurethane bushings to reduce noise and wear, contributing to a longer-lasting suspension system. The shock body measures 13.01 inches when extended and 9.12 inches when collapsed, providing a versatile fit for your powersports vehicle.
Built for enthusiasts who seek simplicity and durability, these shocks do not incorporate adjustable valving or high-flow features, focusing instead on solid, dependable performance. The black finish on both shock body and springs adds a clean, professional look to your ride.
With Progressive Suspension's commitment to quality and the enthusiast-driven service from Tuningsupply, you can trust these shocks to elevate your vehicle's handling and ride comfort without hidden fees or delays.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 1
Before use on March 15 two days later March 17 engine light still on
Size: 1 Count (Pack of 1), Size: 1 Count (Pack of 1)
I read the specs on this product and it was guaranteed to cleanse as well as turn engine light off in vehicle. I received it March 14.2026 and used it on March 15.2026 I took a picture on Sunday before I entered it into the gas tank engine light was on at that time. Today is March 17.2026 and engine light is still on. The truck was driven for one hour on the 15th 45 minutes on the 16th and 50 minutes on 17 March. Still the engine light is on. Got home parked the vehicle took a picture again to show engine light is still on product guaranteed it was shut it off, but unfortunately product does not work.
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Reviewed in the United States on March 17, 2026
★★★★★ 4
Good stuff
Size: 1 Count (Pack of 1)
I've used and it's worked for emissions for me and that's with having check engine light on..use stuff,drive around a bit,clear code drive to emissions and should b good unless got serious problems. It's good to use 1 or 2 times a yr if high mileage vehicle.
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Reviewed in the United States on January 1, 2025
★★★★★ 5
It works!
Size: 1 Count (Pack of 1)
My 2005 Jetta failed the inspection and my mechanic said (after clearing the engine light) that I should drive the car for 20 min highway and 20 local. We've tried that the whole day but out of three lights on his device only 1 went away. Next day the light engine came back. After not being happy with the explanation offered by him (a family friend) that I should keep driving it until we get lucky I went online and found CRC 05063. Followed the instruction (one bottle on full tank of gas). Before my tank was under 3/4, engine light went off!! At half tank I went and did the inspection - IT PASSED! I am really impressed!
Update August 2015!
I have been using this product for 2-3 years now and if it is not working for you please read. In July I have used the first bottle and took my 2005 Jetta for inspection. It failed. Ordered a second bottle and it failed again. My mechanic said keep driving. Did 200 miles in one day and nothing. Decided to take matters in my own hands and ordered Autel MaxiScan MS300 ($18, it allows you to read and delete codes). There were two faults - EVAP and 2nd something about Oxygen. Went online and this is the first time I heard about driving cycles. These are steps that you have to follow so that your car's computer can start measuring all the parameters needed for the test. Driving cycles are not exact science but I tried to follow the instructions as much as I could and after just 20 minutes (10min city and 10min highway) ALL the parameters were set and I passed the emission test with flying colors! So, just before you give a comment about CRC like "tried and didn't work" be aware that there are other things you have to take into account.
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Reviewed in the United States on July 1, 2013
★★★★★ 3
My car did not pass!
Size: 1 Count (Pack of 1)
My car didn't pass. However, the company CRC sent me a reimbursement check.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Pass Again
Size: 1 Count (Pack of 1)
This product never fails (no pun intended), I have been using this for the last 10 years my car has never failed a smog test. I highly recommend this and that you use it correctly. You will not be disappointed.
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Reviewed in the United States on March 27, 2026
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