Shimano Saint RD-M820-SS1 Rear Derailleur - 10 Speed Short Cage Black MFPN=723POLISH and placed aerospace-quality carbon layers

and placed aerospace-quality carbon layers

For coating grip waxes

10 traction pins per side

Attaches to air compressor to inflate tires in seconds

SRAM Spiders for Bosch Ebike motors

Shimano Saint RD-M820-SS1 Rear Derailleur - 10 Speed Short Cage Black MFPN=723POLISH and placed aerospace-quality carbon layersThanks to its Shadow RD+ low profile design and close ratio compatibility the Shimano Saint RD M820 rear derailleur is ready for the rough and tumble world of gravity racing. Shimano Saint specific Shadow+ design offers a rear derailleur with less distraction for a quiet drive train and features an adjustable stabilizer to reduce chain slap Mode Converter allows the derailleur to track different type of cogsets DH mode is a close ratio mode to track