


Sealey Motorcycle Swingarm Locknut 4 Pin 37mm SMC20
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Sealey Motorcycle Swingarm Locknut 4 Pin 37mm SMC204 Tooth socket, specially designed to remove castellated locknuts found on motorcycle swingarms. Also suitable for some engine mounting nuts. Specifications Detail 4 Tooth socket, specially designed to remove castellated locknuts found on motorcycle swingarms. Detail Also suitable for some engine mounting nuts. Model No. SMC20 Manufacturer Warranty: 1 year You Might Also Need These SE VS1824 SE MC4500
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4.7 ★★★★★
Based on 810 reviews
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Product Reviews
★★★★★ 4
Good quality
Size: Large, Color: (035) Steel / White / Black
These are a bit thicker then a compression sock and they come up higher on the ankle than a no-show sock normally does. They are very comfortable and soft.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
★★★★★ 5
Good quality socks
Size: X-Large, Color: (001) Black / Black / White
Great value and great product and comfort. Not thin and wears well not like thin socks in a size that fits
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Reviewed in the United States on December 4, 2025
★★★★★ 5
Socks
Size: Medium, Color: (001) Black / Black / White
Great price, perfect fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
★★★★★ 5
Finally found a good set again.
Size: X-Large, Color: (001) Black / Black / Castlerock
I’m picky on socks, any they always have to be Under Amour. These are top notch, super padded but also temperature regulating, feet don’t sweat when wearing, and I can tell in the winter they’ll stay the right temperature. They also fit great. Purchasing more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Best Quality Socks & Great Thickness Plus Comfort
Size: Medium, Color: (001) Black / Black / Castlerock
I love these. They do not slip away from foot. The value for a good pack of socks was worth it. Has a good thick quality. They look clean and nice. Their stretch is good to get on and then molds to foot.
Have noticed these socks have changed two times since buying. First they were slightly lighter color gray- then a darker gray but both had good quality and thickness. I am sure these are very durable but unfortunately I can not speak fully to this as the horrible steel toe shoes I have to wear rip everything apart. But if I had good shoes and everyday use of these I know they would stay good for so much longer than 6months.
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Reviewed in the United States on July 7, 2025
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