Big performance in a tiny package, the Di2 SW-RS801-S for on road bar brings lightning fast shifting to the tops of any SHIMANO 12-speed road bike.

Shimano has been working for years to provide you with an advantage of seconds. The new 12-speed DURA-ACE R9200 is the fastest groupset ever and the pinnacle of SHIMANO technology and innovation. Speed was the key driver for the development of this new generation road groupset. That's why every component has been revised, refined and optimised to make you even faster - whether to leave the peloton behind you or to win the final sprint on the Champs-Élysées.Winning or losing by millimeters can be the difference between a seamless shift and the split second it takes to reach for a gear. With satellite shifters, in the drops or on the tops, additional custom shift locations help you perfectly manage your effort.

FEATURES

• Compact satellite shifter creates multiple, custom shift points on the handlebar
• Attaches directly to the handlebar
• Short cable, for Remote sprinter switch
• 100mm cable length EW-SD300

SPECIFICATIONS

• Use: Road
• Group: Dura-Ace Di2 R9250 / Ultegra Di2 R8100
• Model: SW-R801-S
• Type: Shifting Switch
• Position: On road bar
• Handlebar mounting: left / right
• Compatible electric wire: EW-SD300
• E-tube Project: Yes
• E-tube port (pcs): 0
• E-tube connector (pcs): each 1

TECHNOLOGIES

• SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEM
  The SEIS innovative shift technology is still based on the SHIMANO INDEX SYSTEM (SIS) that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics. This electronic shifting system has been extensively tested over past two years by several professional riders in all conditions possible, such as rain, mud, low temperatures, cobble stone roads and combinations of all of these at the same time. Shifting is executed by simply pressing the button. No power is needed to shift, which gives important advantages since it is easier now to always keep a tight grip on the handlebar and to keep your concentration on riding instead on shifting. The shift system allows accurate and effortless shifting in difficult circumstances like when you have cold hands or when you are completely exhausted. Furthermore, the shifting performance will never be affected by contaminated or stretched cables since the shifting signal is transferred electronically. The operating buttons work similarly to mechanical Dual Control Levers so you don’t need to re-program your mind for a new system.
• E-Tube
  E-Tube platform offers optimum flexibility on your bike. E-TUBE transmits interactive signals and power supply to each parts by “Plug & play” connection. E-TUBE is no rust, no stretch, no freeze and it ensures advanced low maintenance. And SM-PCE1 connects between PC and components to update firmware. Digital device stay the latest version with updating firmware for improve function.