Onyx Thru Bolt (20mm x 133mm)

Marsoni

M251S

$96.00

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

Onyx Thru Bolt (20mm x 133mm)Onyx manufactured aluminium thru bolt produced for Onyx front and rear hubs that utilise a thru bolt system. Available in different lengths to suit the most popular frames and forks on the BMX race market, they come in both 15mm and 20mm diameter. Every bolt includes 2x 2mm spacers. Use these thru bolts with any hub brand that requires a bolt system like this. Note: Physical axle spacing is 2mm less that listed size to allow for compression. eg, 117mm

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We offer a 30-day return/exchange service after receiving.
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No reason not to go OEM for this! Came with every possible gasket and seal I could need. Specifically for my Alpha One Gen 1 it took maybe 25-30 min to completely install. While you’re there check the base plate for wear and the other surrounding items like your water tube. Rather keep the lower unit off for an extra day to get another part than a catastrophic failure.

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Reviewed in the United States on September 9, 2025

Verified Purchase

Taylor 🤍

Birmingham, US

★★★★★ 5

Husbands things

My husband bought this. I don’t know much about it but he has zero complaints. He bought it for a boat. He has fixed up 2 boats, sold one & we kept the other. So he apparently knows what to buy & how to use it.

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Reviewed in the United States on November 6, 2025

Verified Purchase

Edward W.

Cuba, US

★★★★★ 4

Amazon is easy and fast . No problems the oarts was exactly as described.

liked that everything was in one bag . and could make sure everything was changed .

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Reviewed in the United States on August 3, 2020