Back to site

7075 - aarn 144#47/49/51 Track Chainring (144BCD//47/49/51-Tooth)


A high-quality designer track bicycle chainring with a unique tooth profile designed for maximum engagement and minimal wear. Manufactured in Medford, Massachusetts, USA, from certified 7075-T6 aluminum plate stock. These chainrings are fully CNC machined. All edges (front and rear) are machine broken with a 45-degree 0.010-in deep chamfer. Product is packaged in a custom letterpress printed envelope with a QC certification label and number, and shipped USPS Priority Mail (or First Class for International orders). More details and product photos are available at

Techical Details:
+Bolt Circle Diameter: 144-mm
+Number of Teeth: 47, 49, or 51 (choose below)
+Supported Chain Type: 1/8-in Track/BMX
+Material: Anodized 7075-T6 Aluminum
+Finish: Black or Clear Anodized

Now shipping internationally!!

Shareable media is located here, if you want to spread the word about this release!

Sold Out