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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 22 reviews
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Product Reviews
★★★★★ 5
love love love!!
Color: Multicolor-4pack-a1, Size: Medium
like my daily driver now, like i never thought underwear could be this good untill now! have bought 2 4packd and will probably get more in the future :) they are snug but not suffocating, with my darker skin i was worried of them getting darker in that area but so far(3-4 months) they’ve been holding up well and clean easily in the washing with a bit of stain remover!
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Reviewed in the United States on May 19, 2026
★★★★★ 3
Satisfactory
Color: Multicolor-4pack-a1, Size: X-Large
If your wanting an easy on high waisted underwear these work.
They are honestly strange material, a mix of three different things- not bad but different.
Not seamless, might ride up, slightly on the thicker side. Will last a while. Comfortable enough but not amazing.
Got for after a surgery and needed something different- these worked but would I get on a normal day probably not.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Super soft and comfortable!
I haven't bought new underwear in forever. I used to wear thongs, but now find them incredibly uncomfortable. The last few times I've tried to buy new underwear, the sizing was either way off (I'm a medium, but gave up after having to return them for a large and then extra large) or the quality was horrible (two brands stretch waaaay out and they can fall down while wearing them (I have larger ass-ets, so they shouldn't start to slide down during use). I tried these after buying some bamboo pyjamas and I love them! They are incredibly soft, comfortable, and stretchy. I can use them all day, and they work well, whether I'm lounging on the couch or wearing them under my spandex shorts at the gym, they don't ride up or slide down. They are both comfortable and look sexy, while providing support in all the right places. I haven't had them too long, so I can't speak on the durability, but they appear to be of good quality and I plan to order more, this time without the band.
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Reviewed in the United States on November 13, 2025
★★★★★ 5
Well made, light fabric. Waist doesn't roll.
These bamboo underwear really do keep you cool.
They fit true to size, and wear easily. the wide elastic waist band doesn't roll on me.
They are comfortable to wear, washed and dried easily.
The material has some stretch to it, but not a lot.
Well made, no stray strings. Perfect fit for me.
Just what I was looking for.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Good quality, smooth feel
I got these briefs so recently that have washed just one pair so far. First off, these are very comfortable, the material is soft & bordering silky, good quality sewing. Wash well and minimal if any shrinkage. They do come a bit wrinkled from the dryer but hey, these are underwear and will go on smoothly. If it were a t-shirt, I would look sloppy. I feel the sizing is accurate. No rolling and these don't announce themselves under clothing. Planning on getting more of these boxers and replacing my old panties.
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Reviewed in the United States on January 31, 2026
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