The narrow-wide chainring is for use as only single
ECHNICAL SPECIFICATIONS
Offset: 38T-54T  3,0mm; 56T-58T  2,0mm; 60T-62T  1,0mm
Weight: 38T- 63g; 40T- 74g; 42T- 85g; 44T- 93g; 46T- 99g; 48T- 108g; 50T- 120g; 52T- 129g; 54T- 146g; 56T- 155g; 58T- 159g; 60T- 174g; 62T- 182g
Diameter: 38T- 161,3mm; 40T- 171,0mm; 42T- 179,0mm; 44T- 187,0mm; 46T- 195,5mm; 48T- 202,4mm; 50T- 210,4mm; 52T- 219,0mm; 54T- 227mm; 56T- 235mm; 58T- 243mm; 60T- 251mm; 62T- 259mm
Technology: Narrow Wide 1-speed
Material: Aluminum 7075-T6
Made: CNC milling
Surface coating: Anodizing
 
COMPATIBILITY
For Shimano 2×11 cranks with 110 mm Asymmetrical bolt circle diameter (4-arms): Dura-Ace R9100; Ultegra R8000; 105 R7000 and Dura-Ace 9000; Ultegra 6800; 105 5800; Tiagra 4700
Not compatible with Shimano 2×11 cranks with PowerMeters 
Chainrings you may use the following chains: all 11sp, 12sp Shimano; 11sp, 12sp SRAM Flattop; KMC chains
Note: the chainring 1x is not compatible with the 2x setups
 
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
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, such as 10, 11, and 12-speed drives
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 Ultegra R8000 cranks)