aarn 144# PRO chainring
USA orders totaling $100 or more receive free shipping.
This applies to standard shipping in the contiguous 48 states and military APO/FPO addresses only. Oversized items are excluded from the free shipping offer.
All other shipping charges are shown in the cart before checkout. Free shipping does not apply to orders shipping outside the USA.
For complete information, please see our Shipping page.
If you are a local customer choosing the Store Pickup option at checkout,
please wait to receive an email saying your order is ready before coming to pick it up.
Local orders may not be ready the same day they are placed.
Returns for eligible products are accepted within 30 days of the purchase date. Some exclusions apply.
For complete information, please see our Returns page.
The aarn PRO chainring commemorates the 10th anniversary (or 12th, depending on how you're counting) of aarn bicycle components. First developed in 2008, tested and run in 2009, and sold starting in 2011 in a run of 50pcs under the original marking "44rn".
Like all arrn chainrings, this version is manufactured to the highest standards and features a specially developed coating, infusing Teflon® particles into a bronze/titanium color type III hardcoat anodized finish, with the goal of reducing friction and improving wear.
This series features an prismatic holographic logo, and come in a reusable custom poly-weave zippered bag.
⚠️ aarn chainings are not returnable.
• 144mm bcd
• 1/2 x 1/8"
• sizes: 47, 49, 51 or 55t