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Ships within 48 hours · Estimated delivery Jul 22 - Jul 27
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Description
MOTON Linear Racing Springs - 170 Series (170mm x 61mm ID)Moton Linear Racing Springs Premium 170 Series Replacement Springs (61mm ID) Engineered for high performance motorsport applications, these 170mm length linear springs offer the precision and predictable handling characteristics required for Moton and AST coilover systems. Manufactured from high tensile chrome silicone steel to ensure maximum travel with minimum weight. Lo Open Length (mm) R Spring Rate (N mm) Di Inside Diameter (mm) Sn Block Length
Moton Linear Racing Springs
Premium 170-Series Replacement Springs (61mm ID)
Engineered for high-performance motorsport applications, these 170mm length linear springs offer the precision and predictable handling characteristics required for Moton and AST coilover systems. Manufactured from high-tensile chrome silicone steel to ensure maximum travel with minimum weight.
Lo Open Length (mm)
R Spring Rate (N/mm)
Di Inside Diameter (mm)
Sn Block Length (mm)
Fn Force at Block (N)
St Usable Stroke (mm)
| Part Number | Lo | R | Di | Sn | Fn | St |
|---|---|---|---|---|---|---|
| AST-170-40-61 | 170 | 40 | 61 | 53 | 4680 | 117 |
| AST-170-50-61 | 170 | 50 | 61 | 55 | 5750 | 115 |
| AST-170-60-61 | 170 | 60 | 61 | 57 | 6780 | 113 |
| AST-170-65-61 | 170 | 65 | 61 | 55 | 7475 | 115 |
| AST-170-70-61 | 170 | 70 | 61 | 59 | 7770 | 111 |
| AST-170-80-61 | 170 | 80 | 61 | 63 | 8560 | 107 |
| AST-170-90-61 | 170 | 90 | 61 | 64 | 9540 | 106 |
| AST-170-100-61 | 170 | 100 | 61 | 64 | 10600 | 106 |
| AST-170-110-61 | 170 | 110 | 61 | 69 | 11110 | 101 |
| AST-170-120-61 | 170 | 120 | 61 | 70 | 12000 | 100 |
| AST-170-130-61 | 170 | 130 | 61 | 70 | 13000 | 100 |
| AST-170-140-61 | 170 | 140 | 61 | 72 | 13720 | 98 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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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]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Extremely comfortable
Color: 02-multicolour (4-pack), Size: X-Large
These are by far the softest and most comfortable underwear I have ever owned. The leg portion absolutely does roll up as so many others have mentioned, however, I did not find that to be uncomfortable at all just annoying that they don’t stay in place.
I bought these specific underwear to see if it would help alleviate HS symptoms at all. They have definitely helped with wicking moisture away from the skin. More time will tell if it’s truly helpful for HS. For now, I will recommend these. They are thin, breathable, butter soft, wick moisture comfortable and I would buy again…maybe in a different style next time. I have washed them several times and they seem to be holding up rather well so that is also of supreme importance given the cost of the item.
Again, I would recommend this item and plan on purchasing more in a different style very soon.
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Reviewed in the United States on September 13, 2025
★★★★★ 3
Eaten by my Thighs
Color: 04-multicolour (4-pack), Size: X-Large
I wanted to love them. Sadly they have let me down.
Pros: natural breathable fabric , super soft and comfortable, cotton panty gussets for feminine health and panty liners will stick!! Yay:). And the colors! They are great!
But here’s the Con. And it’s the con of all cons.
THEY RIDE UP!! Eaten by my thighs. I’m 5’6” and in the general area of 175. I fluctuate depending on how many times I visit the bakery! :) I don’t have a thigh gap but it is not a super tight thigh squeeze. I seldom have thigh climb but these do. I tried two different sizes to see if that made a difference. Nope.
I was miserable at a recent theme park in these. I was wearing long heavy dresses and it was quite awkward to yank these legs down non stop.
They feel amazing and they have all the requirements
1. Soft
2. Comfortable and stretches with you
3. Breathable with nice thin fabric. Not bulky
4. Natural fibers
5. Great colors
If you are a person that is not blessed with Thunder Thighs, please order these. They are great! I wear them at home and to locations that I will not be doing a lot of walking at. I have washed them so many times and they look like new still.
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Reviewed in the United States on October 4, 2025
★★★★★ 5
Best Boxer Briefs for Women!
Color: 09-multicolour (4-pack), Size: Large
I rarely give 5⭐️’s but these deserve it! Hands down, the most comfortable material, stitching, waistband, moisture wicking and overall comfort. They sit right beneath my bellybutton, they wash and dry well and they’re sturdy. I have tried 3 styles and these are the best.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Comfortable
Size: Small, Color: B004
Great Value , Sizing is as marked. Great color and fit.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Perfect for us BBWs
Size: 3X-Large, Color: B002
I love the feel of these underwear. They are true to fit as well. I am 340lbs and bought size 3xl. They are comfortable and not tight in the legs.
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Reviewed in the United States on April 5, 2026