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If you have been using the "china" idler pulleys, you likely have 20mm shoulder bolts, and should be able to continue using them. If you are upgrading to gates pulleys and/or magnum pulleys, you will need 25mm shoulder bolts. These are sold by the piece, so if you need some for your Railcore, you will need 4 of them.
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2026
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