Name: Shimano - Dura Ace ST-R9270 BR9270 Disc Brake Lever Set 2-speed - Left
SKU: 182823

DURA ACE Di2 ST-R9270 BR-R9270 12-speed Disc Brake rear

Now equipped with SERVO WAVE braking technology, the Shimano Dura Ace Di2 ST-R9270 brake lever with BR-R9270 caliper offers unparalleled modulation and control. Wireless shifting provides a clean look on the bike and allows for uniquely fast and precise shifting. All these features are integrated into a DUAL CONTROL shift/brake lever that is both lightweight and ergonomic thanks to the use of state-of-the-art materials ensuring optimum comfort and control even under challenging conditions.

THE SCIENCE OF SPEED: Shimano Dura Ace Di2 12-speed STI Dual Control ST-R9270 BR-R9270 Disc Brake

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.

The hydraulic 2-piston brake caliper BR-R9270 for with Flat-Mount and L03A Resin disc pads with fin. The completely newly developed hydraulic disc brakes provide an unprecedented combination of braking power and controllability. With the brand new monobloc design, the peak of high braking performance has now been reached. The lighter BR-R9270 caliper offers wider pad spacing and reduces noise levels. Finally, a new bleeding system makes maintenance easier than ever before.

Features - Shimano DURA ACE Di2 ST-R9270-L BR-R9270 2-speed hydraulic Disc Brake

FASTEST AND MOST RELIABLE SWITCHING OPERATIONS EVER
Improved aerodynamics - Revised DUAL CONTROL shift/brake levers with raised and rounded brake grips
The drive can be adjusted to the rider's preferences via the E-TUBE app
Among other things, the shift speed can be set, a fully or semi-synchronous shift mode can be selected and the programme buttons on the shift lever can be assigned certain functions
Wireless where it matters
SHIMANO's in-house developed, extremely secure Di2 wireless chip scores with low interference probability, unrivalled processing speed and lower energy consumption
Fastest gear changes front and rear
The wireless STIs convince with high energy efficiency and a battery life of up to 1.7 years (CR1632)
Quieter and more maintenance-friendly brake components
Excellent brake control and heat dissipation
Simple wheel replacement
Easy and clean bleeding system

Product features

Use: Road
Group: Dura Ace Di2 R9250
Model: ST-R9270-L
Type: Dual-Control (STI)
Handlebar mounting: left
Gear rear: 12-speed
Optical gear display: No
Lever reach adjust: Yes
Handlebar diameter: 23.8mm/24.2mm
Brake-type: Hydraulic Disc Brake
Brake caliper: BR-R9270
Brake mounting: Flat-Mount
Brake pads: L03A Resin with Fin
Brake hose: SM-BH90-JK-SSR rear 1000mm (shortable)
One-Way bleeding: Yes
Brake fluid: Mineral oil
Recommended brake rotor: SM-RT900 (140mm/160mm)
Compatible electric wire: EW-SD300
E-tube Project: Yes
E-tube port (pcs): 2
E-tube connector (pcs): 0
Di2 Wireless-Chip: Yes

Material

Body: CFRP
Lever: Carbon, painted
Caliper: Aluminium

Scope of delivery

1 Shimano Dura Ace Di2 ST-R9270 12-speed STI Dual Control left
1 Shimano Dura Ace BR-R9270 Flat-Mount Disc Brake Caliper
1 Brake Pads L03A-Resin with Fin
1 Brake Hoses SM-BH90-JK-SSR 1000mm (shortable)
2 Screws for brake caliper (38mm)
1 Tube Joint Kit
The brake hose SM-BH90-JK-SSR is with mineraloil filled and pre-mountedon the caliper BR-R9270!

Disc Rotor SM-RT900 Center-Lock not included!

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.