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Description
MOTON Linear Racing Springs - 180 Series (180mm x 61mm ID)Moton Linear Racing Springs Premium 180 Series Replacement Springs (61mm ID) Engineered for professional motorsport, these 180mm length linear rate springs provide the consistency required for high level chassis tuning. Manufactured from high tensile chrome silicone steel, they offer maximum travel with minimal weight, ensuring your Moton or AST coilovers perform at their peak. Lo Open Length (mm) R Spring Rate (N mm) Di Inside Diameter (mm) Sn Block
Moton Linear Racing Springs
Premium 180-Series Replacement Springs (61mm ID)
Engineered for professional motorsport, these 180mm length linear-rate springs provide the consistency required for high-level chassis tuning. Manufactured from high-tensile chrome silicone steel, they offer maximum travel with minimal weight, ensuring your Moton or AST coilovers perform at their peak.
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-180-20-61 | 180 | 20 | 61 | - | - | - |
| AST-180-30-61 | 180 | 30 | 61 | 56 | 3720 | 124 |
| AST-180-35-61 | 180 | 35 | 61 | 62 | 4096 | 118 |
| AST-180-40-61 | 180 | 40 | 61 | 62 | 4720 | 118 |
| AST-180-45-61 | 180 | 45 | 61 | 63 | 5240 | 117 |
| AST-180-50-61 | 180 | 50 | 61 | 70 | 5500 | 110 |
| AST-180-55-61 | 180 | 55 | 61 | 71 | 5995 | 109 |
| AST-180-60-61 | 180 | 60 | 61 | 73 | 6420 | 107 |
| AST-180-65-61 | 180 | 65 | 61 | 75 | 6825 | 105 |
| AST-180-70-61 | 180 | 70 | 61 | 77 | 7210 | 103 |
| AST-180-75-61 | 180 | 75 | 61 | 80 | 7500 | 100 |
| AST-180-80-61 | 180 | 80 | 61 | 75 | 8400 | 105 |
| AST-180-85-61 | 180 | 85 | 61 | 78 | 8670 | 102 |
| AST-180-90-61 | 180 | 90 | 61 | 81 | 8910 | 99 |
| AST-180-95-61 | 180 | 95 | 61 | 84 | 9120 | 96 |
| AST-180-100-61 | 180 | 100 | 61 | 77 | 10300 | 103 |
| AST-180-110-61 | 180 | 110 | 61 | 88 | 10120 | 92 |
| AST-180-120-61 | 180 | 120 | 61 | 84 | 11520 | 96 |
| AST-180-130-61 | 180 | 130 | 61 | 89 | 11830 | 91 |
| AST-180-140-61 | 180 | 140 | 61 | 86 | 13160 | 94 |
| AST-180-150-61 | 180 | 150 | 61 | 92 | 13200 | 88 |
| AST-180-160-61 | 180 | 160 | 61 | 84 | 15360 | 96 |
| AST-180-170-61 | 180 | 170 | 61 | - | - | - |
| AST-180-175-61 | 180 | 175 | 61 | - | - | - |
| AST-180-180-61 | 180 | 180 | 61 | 95 | 15300 | 85 |
| AST-180-200-61 | 180 | 200 | 61 | - | - | - |
| AST-180-220-61 | 180 | 220 | 61 | 92 | 19360 | 88 |
| AST-180-240-61 | 180 | 240 | 61 | - | - | - |
| AST-180-250-61 | 180 | 250 | 61 | - | - | - |
| AST-180-260-61 | 180 | 260 | 61 | - | - | - |
| AST-180-290-61 | 180 | 290 | 61 | - | - | - |
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- Free Standard Shipping on $100+ Orders to the USA.
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4.6 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Excellent sound and function
Set name: 5.1 Receiver
We're very pleased with this unit. We use a 3.1 system in our TV area, stereo plus center channel and subwoofer. It's nice that this unit supports that. We get very nice imaging from this, and don't really miss the surround speakers.
**We had to replace the old HDMI cables with new ones that could handle the larger bandwidth of 4K. If you're cables are 5-10 years old like ours, newer cables are required to carry a modern video signal.
We like the Yamaha sound, and are able to EQ it easily to sound right for the room. I've used several receivers over the years of various brands. Yamaha consistently delivers good sound and reliable product. I've never had a Yamaha product fail and fewer than 15 years.
There are other units out there with more gadgets and gizmos, bills and whistles, not to mention smoke and mirrors. We want a good sounding reliable unit that plays nice with all of our AV sources and TVs. If that's what you're looking for, look no further than this unit right here.
If you get a good price on this, it's unbeatable.
Sony, Onkyo, Denon, Marantz, etc. - they all make good units with signature sounds. If you aren't familiar with them, and If you can't listen to a bunch of stuff, buy this with confidence.
Here's an unsolicited recommendation: high quality speakers will do more to improve your listening experience than any receiver. If you're looking for an upgrade, start with your front speakers.
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Reviewed in the United States on November 15, 2024
★★★★★ 5
Love my Yamahas
Set name: 5.1 Receiver
RX 385 replaces my much-loved 10 year old RX 375, which I inadvertently fried while experimenting.
The 385 has some newer features, including bluetooth. The old model and this both use the handy YPAO function to tune the audio speakers' depth of field to the listening environment. It's a broadcast mic that you just plug into the front of the receiver for a few seconds to determine each speakers' distance from viewer. Kind of a sonic echo measurement of seating to speaker. It's a foolproof, remarkably clever, timesaving gizmo. The YPAO mic is absolutely included with this unit, looks like a little plastic cone.
Also important to me, Yamaha has replaced the old spring clips for rear/side speakers, which are now the better screw and cap posts, as they have always been for the two front speakers.
I recommend rocketfish HDMI 4k/8k cables to connect this receiver to your tv and to whatever other components you want, such as a bluray. Sound quality is excellent if your speakers are good. (I like KEFs.)
Of course you may prefer wireless speakers, but I'm already committed to wired ones. I used rocktfish banana plugs to connect my speaker wires to the RX 385 receiver's speaker posts. Neat and clean.
With a choice of 2 front, 2 rear, 1 center speaker, plus one coaxial plug in for a subwoofer, your movies and programs are going to sound far more detailed and staged than you'd get from the tv or a sound bar. It's a more immersive and compelling experience. (I use only 2 fronts and 2 rears and don't feel I'm missing anything.)
Yamaha receivers and other components are my favorites: relatively inexpensive, well designed, solidly built, and not fussy to install. If you find yourself in a pickle there are a couple of helpful youtube videos.
I find with the RX385 again that Yamaha does not disappoint me.
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Reviewed in the United States on April 18, 2023
★★★★★ 5
Great unit
Set name: 5.1 Receiver
Works great, was worried about having my hdmi run through it thinking id have to use it all the time but leaving it off the signal still goiles through to the TV. Very rleasy to hook up and very easy to use.
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Reviewed in the United States on April 8, 2026
★★★★★ 5
Solid choice for fuse holder
Size: 300A Fuse Holder
It’s awesome, solid connections for running 0 gauge wire. No issues after using for months! Might upgrade to using 0 gauge wire ferrules to use with this but for now everything is working well.
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Reviewed in the United States on January 14, 2026
★★★★★ 5
Would buy again
Size: 300A Fuse Holder
Works as described
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Reviewed in the United States on April 13, 2026