Shimano GRX ST-RX825 Di2 Shifter 12 Speed D4 6 and 8 mm square

6 and 8 mm square chain made of hardened steelSeparate locking of the shackle is not necessaryVarious connection optionsSuitable for all ABUS frame locks and the Alarmbox 2

and brings multiple industry-first technologies to market

A well-maintained cassette can often last through 3–4 chains

tubeless ready Components

If you need more plugs just unthread the Twin Tube™ and flip it around for more plugging action

Shimano GRX ST-RX825 Di2 Shifter 12 Speed D4 6 and 8 mm squareGravel is the great equalizer. No matter who you are, where you come from or where you want to go, gravel welds together a shared passion and lays the foundation for memories on any surface. The Shimano GRX ST RX825 Di2 Shifter brings 12 speed wireless, hydraulic shifting to your gravel, cyclocross or touring rig, so it's ready whether you're on paved roads, forest roads, back roads, or no roads at all. Specifications Series: GRX Di2 RX825