Round Outer 2X for 110 BCD 4b Shimano Asymmetric 2x12sp.

Intended use	2X 12sp. for Road, Time Trial bike
Mounting position	outside of the crank
Bolt circle diameter	110 mm Shimano Asymmetric
Diameter	32T- 138,6 mm; 34T- 148 mm; 36T- 154,2mm; 38T- 161,3mm; 40T- 171mm; 42T- 179mm; 44T- 187mm; 46T- 195,5mm; 48T- 202,4mm; 50T- 210,4mm; 52T- 219mm; 54T- 227mm; 56T- 235mm; 58T- 243mm; 60T- 251mm; 62T- 259mm
Weight	50 teeth - 112g; 52 teeth - 127g; 54 teeth - 143g; 56 teeth -171g
Material	Aluminum 7075-T6
Made	CNC milling
Surface coating	Anodizing

Intended use

2X 12sp. for Road, Time Trial bike

Mounting position

outside of the crank

Bolt circle diameter

110 mm Shimano Asymmetric

Diameter

32T- 138,6 mm; 34T- 148 mm; 36T- 154,2mm; 38T- 161,3mm; 40T- 171mm; 42T- 179mm; 44T- 187mm; 46T- 195,5mm; 48T- 202,4mm; 50T- 210,4mm; 52T- 219mm; 54T- 227mm; 56T- 235mm; 58T- 243mm; 60T- 251mm; 62T- 259mm

Weight

50 teeth - 112g; 52 teeth - 127g; 54 teeth - 143g; 56 teeth -171g

Material

Aluminum 7075-T6

Made

CNC milling

Surface coating

Anodizing

Shifting	Shifting: 2x12 speed (only for use with double system and front derailleur)
Chainrings	Compatible with ALUGEAR Inner Сhainring only
Chains	Chainrings you may use the following chains: 11sp, 12sp Shimano; 12sp KMC chains
Cranks	For Shimano 2×12 speed cranks with 110 mm Asymmetrical bolt circle diameter (4-arms): 105 FC-R7100; Ultegra FC-R8100 (P); Dura-Ace FC-R9200 (P); Сhainrings are compatible with 12-speed cranks FC-R8100-P; FC-R9200-P with Original PowerMeter
Covers	with ALUGEAR Covers for 12sp. chainring

Shifting

Shifting: 2x12 speed (only for use with double system and front derailleur)

Chainrings

Compatible with ALUGEAR Inner Сhainring only

Chains

Chainrings you may use the following chains: 11sp, 12sp Shimano; 12sp KMC chains

Cranks

For Shimano 2×12 speed cranks with 110 mm Asymmetrical bolt circle diameter (4-arms): 105 FC-R7100; Ultegra FC-R8100 (P); Dura-Ace FC-R9200 (P);

Сhainrings are compatible with 12-speed cranks FC-R8100-P; FC-R9200-P with Original PowerMeter

Covers

with ALUGEAR Covers for 12sp. chainring

Information

Engineering excellence

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, ramp and climbing aids allow the chainrings particularly soft and fast shifting. So with them, shifting 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 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 drivetrains. 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.

Cart

Round Outer 2X for 110 BCD 4b Shimano Asymmetric 2x12sp.

Round Outer 2X for 110 BCD 4b Shimano Asymmetric 2x12sp.

Technical specifications

Compatibility