Shimano Rear Derailleur RD-RX812 GRX 11-SPEED, 1x11 insulated mittens Kastle skins are a 65/35

Kastle skins are a 65/35 mix of mohair and nylon to maximize glide and climbing grip

The Dynafit Radical 88 Ski's strength in climbing and energetic and stable downhill characteristics make it a great all-rounder for those classic touring trips in variable to firmer conditions

Weighs in at ~291g (size 42)

16 degrees

Both use the BOA Fit System on the 100 mm medium-volume shell

Shimano Rear Derailleur RD-RX812 GRX 11-SPEED, 1x11 insulated mittens Kastle skins are a 65/35The Shimano RD RX812 is a GRX 11 speed rear derailleur built for gravel riders running a 1x11 drivetrain. Shimano gives it a long GS cage to wrap an 11 40T or 11 42T cassette with 31 tooth total capacity, and a Shadow RD+ clutch with an on off switch to quell chain slap on washboard and chunk. At 267g it holds shifts secure over rough terrain. As the 1x specific GRX unit, this derailleur pairs a wide gravel range with a quiet, stable chain.