Crank Arm Length | Chainring Details | Frame Fitment | Spindle Size | Chainring Fitment | Colour | ID | ||
40T - 49.7mm Chainline Black Four Bolt - 110 BCD Asymmetric Shimano 170mm 68-70mm Shell 24mm
![]() |
170mm | 40T - 49.7mm Chainline | 68-70mm Shell | 24mm | Four Bolt - 110 BCD Asymmetric Shimano | Black | 42937358909485 |
Regular price
$280.00
Regular price
Unit price
per
|
42T - 49.7mm Chainline Black Four Bolt - 110 BCD Asymmetric Shimano 170mm 68-70mm Shell 24mm
![]() |
170mm | 42T - 49.7mm Chainline | 68-70mm Shell | 24mm | Four Bolt - 110 BCD Asymmetric Shimano | Black | 42937359204397 |
Regular price
$280.00
Regular price
Unit price
per
|
40T - 49.7mm Chainline Black Four Bolt - 110 BCD Asymmetric Shimano 172.5mm 68-70mm Shell 24mm
![]() |
172.5mm | 40T - 49.7mm Chainline | 68-70mm Shell | 24mm | Four Bolt - 110 BCD Asymmetric Shimano | Black | 42937359237165 |
Regular price
$399.95
Regular price
Unit price
per
Ships in 10-14 days
|
42T - 49.7mm Chainline Black Four Bolt - 110 BCD Asymmetric Shimano 172.5mm 68-70mm Shell 24mm
![]() |
172.5mm | 42T - 49.7mm Chainline | 68-70mm Shell | 24mm | Four Bolt - 110 BCD Asymmetric Shimano | Black | 42937359335469 |
Regular price
$280.00
Regular price
Unit price
per
|
40T - 49.7mm Chainline Black Four Bolt - 110 BCD Asymmetric Shimano 175mm 68-70mm Shell 24mm
![]() |
175mm | 40T - 49.7mm Chainline | 68-70mm Shell | 24mm | Four Bolt - 110 BCD Asymmetric Shimano | Black | 42937359368237 |
Regular price
$399.95
Regular price
Unit price
per
Ships in 10-14 days
|
42T - 49.7mm Chainline Black Four Bolt - 110 BCD Asymmetric Shimano 175mm 68-70mm Shell 24mm
![]() |
175mm | 42T - 49.7mm Chainline | 68-70mm Shell | 24mm | Four Bolt - 110 BCD Asymmetric Shimano | Black | 42937359401005 |
Regular price
$399.95
Regular price
Unit price
per
Ships in 10-14 days
|
Description
The SHIMANO FC-RX820-1 crank balances weight savings, optimized efficiency and an array of gearing options that cater to the segmented demands of mixed-terrain riding. By pairing a 10-45T or 10-51T cassette with 40T and 42T chainrings, riders can choose closer gear steps or ultimate range. The FC-RX820-1 comes in 170, 172.5, and 175 mm crank arm lengths, providing an additional level of customization.