4130 born from BMX

We have BMX in our Blood, we were there from the start and we are still riding today! We know it and we love it. We want the masses to have access to best parts in BMX. We want to introduce Proper Bike Co. to North America. Featuring the highest quality frames with Columbia 4130 Chromoly tubing, CMC Milled 6061 Alloy Stems, sprockets, Headsets, bottom brackets, and seat posts. Vocal Bars, stems, and cranks and Shield protectives

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