ALUGEAR Chainrings Set 2x12speed Round for 110 BCD 4b Shimano Asymmetric (54T-40T,Black)

Description

The original AERO design ALUGEAR chainring 2-speed

TECHNICAL SPECIFICATIONS

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)

COMPATIBILITY

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

INFORMATION

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 to switch particularly softly and quickly. So, with them, a shift under load is easy. 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 protect 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.

RECOMMENDATIONS

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

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

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

We recommend using the optimal Alugear 2-speed chainrings combination

The correct operation of the double set is guaranteed only when using Alugear outer and inner chainrings together 

Tool holder: 5 mm hexagon socket maximum permissible torque: 10 Nm