Onyx Aluminium HG Cog

Marsoni

M251S

$51.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Onyx Aluminium HG CogQuality Aluminium replacement Cog from Onyx. Made in the USA Broached splines are made exactly the same for every cog, every time. 7075 T651 Aluminum Drivetrain Speeds: Single Speed 3 32" Weight: 10g (16t) *Shimano Fitment

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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.
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Better than expected! Wanted shelving in the kitchen after our remodel but custom cut would’ve cost us over $500. Glad we went with these. Quality is great, easy to mount. I won’t be coming close to the weight limit but even with pressure they don’t budge. Anchored into drywall and 1 stud. Great price and perfect for our space.

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Reviewed in the United States on April 14, 2026

Verified Purchase

Claudia

Port Orchard, US

★★★★★ 4

Cute and easy to assemble

Color: Nursery Book Shelves, Natural, Size: 24"W - 2P, Color: Nursery Book Shelves, Natural, Size: 24"W - 2P

Love these!

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Reviewed in the United States on December 1, 2025