Shimano GRX 12 speed 1x Crankset (820) (FC-RX820-1) (820 = $250)
FC-RX820-1 - SHIMANO GRX - Gravel Crankset - 1x12-speed
[40 or 42T]
[170, 172.5, and 175 mm crank arm lengths]
[weight: 644 (40T); 656 (42T)] [$250]
[Chain line (mm): 49.7]
[P.C.D. (mm): 110] https://swinny.net/Cycling/-3005-PCD-Pitch-Circle-Diameter-Defined
Spider/gear arms: 4
[Q-factor (mm) 151]
[Recommended bottom bracket|Threaded (normal): SM-BBR60 | SM-BBR60] [Threaded bottom bracket shell width (mm)| 68 or 70] [Compatible chain: HG 12-speed chain]
Pedal Spindle: 9/16"
Spindle Interface Type: Shimano Hollowtech II: 24mm
Chainring BCD: 110 Shimano Asymmetric
Chainline/Hub Compatibility: 135/142 Road Disc Hubs > 415 mm Chainstay
Chain: Shimano HG 12-speed chain: CN-M6100: https://bike.shimano.com/en-EU/product/component/deore-m6100/CN-M6100.html. The M6100 chain provides smooth shifting and enhanced chain retention thanks to an extended portion of the inner plate. The new chain features QUICK-LINK assembly and is optimized for HYPERGLIDE+ cassettes and DYNAMIC CHAIN ENGAGEMENT+ chainrings.
Shimano GRX 12 speed 1x Crankset (610)(FCRX610-1)
FC-RX610-1 - SHIMANO GRX - Gravel Crankset - 1x12-speed
VIEW PRODUCT [38 or 40T] [165, 170, 172.5, and 175 mm crank arm lengths] [weight: 812 (40T)] [$150]
Chain: HG 12-speed chain: CN-M6100: https://bike.shimano.com/en-EU/product/component/deore-m6100/CN-M6100.html