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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
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Description
Progressive Harley-Davidson 412 Series Shocks 11.0in - BlackExperience superior rear suspension performance with the Progressive Suspension 412 Series Shocks, model 412 4045B. These shocks are specifically designed for powersports applications, offering a durable steel shock body with a sleek black finish to complement your ride. Built with a twin tube internal design, these gas charged shocks provide reliable damping without the complexity of adjustments, making them perfect for enthusiasts who desire quality
Experience superior rear suspension performance with the Progressive Suspension 412 Series Shocks, model 412-4045B. These shocks are specifically designed for powersports applications, offering a durable steel shock body with a sleek black finish to complement your ride.Built with a twin-tube internal design, these gas-charged shocks provide reliable damping without the complexity of adjustments, making them perfect for enthusiasts who desire quality and simplicity. The shock length extends to 11.01 inches and collapses to 9.62 inches, offering excellent travel for various common setups.
Equipped with polyurethane bushings in black for enhanced durability and reduced noise, both the upper and lower mounts feature eyelets for secure, straightforward installation. Included coilover springs come with a spring rate of 300/350 lbs per inch and a black finish, allowing you to adjust spring preload to fine-tune your ride’s handling characteristics.
These shocks are sold as a pair and do not include additional components like reservoir, shock linkage, or linkage bearings, keeping the setup straightforward and efficient. Enjoy a hassle-free upgrade with fast European-focused shipping and no hidden fees from Tuningsupply, your trusted source for performance parts since 2020.
Whether you're building a custom hot rod, tuning a kit car, or upgrading your V8-powered machine, these Progressive Suspension 412 Series Shocks will add dependable, consistent performance to your rear suspension. Order now to enhance your ride’s handling and stability!
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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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]
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4.7 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
So will not write down your foot
Size: Medium, Color: (001) Black / Black / Castlerock
I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Comfy and Stay Put
Size: Medium, Color: (002) Black / Black / Halo Gray
These socks are honestly great. They’re super thin and light, so once you have them on, you kind of forget they’re even there. No bulky feeling in your shoes at all.
The best part is they actually stay on. I hate no-show socks that slide down after five minutes, and these don’t do that. The little grip on the heel really works, so you’re not constantly adjusting them all day.
They’re breathable too, which is nice if your feet run warm. They dry fast and don’t get that gross sweaty feeling. And there’s no annoying seam on the toe, so nothing rubs or feels uncomfortable.
Basically, they’re just comfy, stay put, and don’t cause problems — which is all I want from socks.
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Reviewed in the United States on January 16, 2026
★★★★★ 5
Perfect sucks
Size: Medium, Color: (001) Black / Black / Castlerock
Wonderful socks . The weight is perfect !! These do not slip when in a shoe they stay out !!
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Reviewed in the United States on April 14, 2026
★★★★★ 4
Amazing but quality changed
Size: Large, Color: (002) Black / Black / Halo Gray
Love these socks so much, been buying them for about 4 years now!! Not giving them 5 stars anymore because the quality is different and not as good, durable and thick as before.
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Reviewed in the United States on July 10, 2025
★★★★★ 5
The best no show socks
The only no show socks I have ever found that do not slide down. These are very comfortable and the extra tab on the back provides comfort by keeping shoes from rubbing the back of your foot. The top of the sock also comes up high enough to cushion the top of your foot all while still remaining hidden while wearing tennis shoes or even with my hey dudes.
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Reviewed in the United States on November 30, 2025