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The original AERO design ALUGEAR chainring 2-speed



  • Intended to use: 2×12 speed for Road and Time Trial bike

  • Weights: 50 teeth – 112g; 52 teeth – 127g; 54 teeth - 143g; 34 teeth – 26g; 36 teeth – 29g; 40 teeth – 40g

  • Optimum chainring combinations: 50-34; 52-36; 54-40

  • Mounting position: outside 50T; 52T; 54T;  inside 34T; 36T; 40T

  • Bolt circle diameter: 110 mm Shimano Asymmetric

  • Attachment: 4-arm spider

  • Material: Aluminum 7075-T6

  • Made: CNC milling

  • Surface coating: Anodizing


Delivery includes: 1x outer chainring, 1x inner chainring.

(Without Aero cover, without nuts and bolts)



  • For Shimano 2×12 speed cranks with 110 mm Asymmetrical bolt circle diameter (4-arms): FC-R7100; FC-R8100 (P); FC-R9200 (P)

  • The chainrings are compatible with 12-speed cranks FC-R8100-P; FC-R9200-P with Original PowerMeter

  • Chainrings you may use the following chains: 12sp Shimano, 12sp KMC 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 unique 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



  • For the best appearance, you may use ALUGEAR AERO COVER (for 105 R7100, Ultegra R8100, R8100-P or Dura-Ace R9200, R9200-P cranks)

  • Also, you may use ALUGEAR chainring bolts and nuts for mounting: 7mm nuts and 6,5mm bolts are required

Sort 54-40T Drevsett 2x12speed rund for 110 BCD 4b Shimano

kr 1 845,00Pris
Ved bestilling forventes produktet på lager innen 2-3 uker
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