Chainring Set 2x Round AERO DM for Sram 3 bolts

Chainring set 2-speed ROUND AERO Direct Mount for Sram 3 bolts cranks

Size: 48T-34T
Color: Black

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Processing time: up to 10 business days


Shipping time: 2 to 7 business days. Provided by FedEx

  Return Policy

You can return an unused product within 30 days

The original AERO "Golf Ball" design ALUGEAR chainring 2-speed



  • Intended to use: Road, Gravel and Time Trial bike

  • Weights: 48 teeth – 156g; 34 teeth – 28g; 4 bolts – 4g.  Set – 188g

  • Chainrings: 48T - AERO Direct Mount; 34T - Alugear original 99BCD

  • Mounting position: outside 48T,  inside 34T

  • Direct mount: Sram 3-bolts

  • Material: Aluminum 7075-T6

  • Made: CNC milling

  • Surface coating: Anodizing



  • For Sram 2X cranks with 3 bolts mount

  • Chainrings you may use the following chains: 12sp Sram Flattop chains


ALUGEAR chainrings are some of the lightest chainrings on the market. Using our experience and vigorous testing, we tweaked the arm design and strategically machined the chainrings so that only minimal sacrifices were made in impact strength in exchange for large gains in weight reduction

With special tooth profiles, mount and climbing aids allow chainrings a particularly soft and fast switching. So with them a shift under load easily. The chainrings have been specially tuned by climbing aids and can only achieve their superior shifting performance in the combinations provided by Alugear

The chainrings are CNC machined from 7075 T6 aluminum and hard coat industrially anodized to provide protection from mechanical impacts, a good look, and an excellent tactile feel to each of the chainrings that lasts a long time
A unique tooth profile eliminates chain noise, reduces wear, and provides smooth operation on the entire system of all the most common combinations of drive trains

The tooth profile is specially designed for use with Road chains

ALUGEAR chainrings are the best choice if you are looking for a technologically sound chainring with a unique design and low weight


  • Use the standard chainring bolts supplied with the cranksets

  • It is also a good idea to use a new chain with your new ALUGEAR chainring

  • It is recommended to use a well-lubricated chain on every ride


Delivery includes: 1 x outer chainring and 1x inner chainring + 4 bolts


Data sheet

Cranks SRAM 3-bolts Direct Mount axle type
Direct Mount
for SRAM 3-bolts

Specific References

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