THE SCIENCE OF SPEED
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.
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
- 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+BR-R9270 (Left Only)
- Type: Dual-Control (STI)
- Handlebar mounting: Left
- Gear front: 2-speed
- 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 front 1000mm / rear 1700mm (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): each 2
- E-tube connector (pcs): 0
- Di2 Wireless-Chip: Yes
Material
- Body: CFRP
- Lever: Carbon, painted
- Caliper: Aluminium
Color
Scope of delivery
- 1 x Shimano Dura Ace Di2 ST-R9270 2x12-speed STI Dual Control (Left Side)
- 2 x Shimano Dura Ace BR-R9270 Flat-Mount Disc Brake Caliper
- 1 x Flat-Mount Adapter 140mm/160mm
- 2 x Brake Pads L03A-Resin with Fin
- 2 x Brake Hose SM-BH90-JK-SSR 1000mm / 1700mm (shortable)
- 4 x Screw for brake caliper (for rear 2 x 38mm)
- 2 x Tube Joint Kit
- The brake hoses SM-BH90-JK-SSR are with mineraloil filled and pre-mountedon the calipers BR-R9270!
*Disc Rotors 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.
