Description

Shimano Dura-Ace Di2 R9270 Disc 2x12v Complete Groupset

The absolute gold standard in professional cycling. Featuring 58% faster rear shifting, WorldTour-level wireless ergonomics, and surgical braking control. The flagship Shimano Dura-Ace Di2 R9270 groupset is presented here in the ultimate racing configuration: 172.5mm crank arms, mid-compact 52/36T chainrings, and an 11-30T cassette.

Engineered with a single-minded goal: to deliver precious seconds where every single watt counts. The 12-speed Shimano Dura-Ace Di2 R9270 electronic groupset takes electronic drivetrain execution to uncharted territories, utilizing its proprietary wireless protocol and revolutionary Hyperglide+ sprocket ramp design. This premium hydraulic disc setup pairs benchmark-setting structural stiffness with unparalleled rotor heat management, making it the definitive choice for riders who refuse to compromise on their racing machine.

• Electronics: Semi-wireless Di2 ecosystem (wireless cockpits paired with a hardwired battery-to-derailleur loom)

• Technology: Hyperglide+ (instantaneous, crisp shifts even under max out-of-the-saddle climbing loads)

• Gearing Included: 172.5mm crank arms, mid-compact 52/36T chainrings, and an 11-30T cassette

• Regular Price: € 3,904.90 | Special Price: € 2,299.00 (Free Shipping across Italy)

In-Depth Description

The science of speed: Experience the fastest Shimano drivetrain ever created.

The Shimano Dura-Ace Di2 R9270 groupset isn't just a minor iteration; it is a ground-up engineering marvel designed entirely around shifting speed and mechanical efficiency. Every individual component has been sculpted to operate in absolute symbiosis, ensuring intuitive driver ergonomics and market-leading performance in any climatic profile.

Lightning-Fast Shifting & Revamped Di2 Infrastructure

The brain of the drivetrain is the new 12-speed Di2 platform. It processes wireless signals sent from the cockpit shifters while relying on a high-efficiency internal wired connection to link the derailleurs to a central seatpost battery. This smart architecture allows the RD-R9250 rear derailleur to perform shifts 58% faster than the previous generation (R9150), while the front derailleur reduces shifting delay by 45%—wiping out even the slightest drivetrain hesitation or cadence lag.

Hyperglide+ Technology & Precision Gear Stepping

With the integration of Hyperglide+ technology (perfected in elite off-road circuits), the chain is constantly supported and guided by the sprocket cassette profile rather than jumping between cogs. This lets you shift up or down with seamless fluidity, even during full-gas sprint finishes or heavy standing efforts on steep gradients. The mid-compact 52/36T chainrings paired with the 11-30T cassette deliver the ideal gear development for fast road racing, criteriums, and alpine passes, retaining ultra-tight cadence steps.

Servowave Braking & Absolute Modulation

The hydraulic disc brakes on the R9270 system bring Shimano's Servowave technology to the road. The lever throw is split optimized: initial travel quickly brings the brake pads to the rotor, followed by a highly progressive and predictable modulation phase. Pad-to-rotor clearance has been expanded by 10%, drastically reducing frustrating pad rub and metallic screeching caused by heat expansion, trail grit, or minor rotor warping under sustained, heavy braking.

Box Contents

The groupset is delivered brand new, sealed inside its original retail packaging. The complete bundle includes:

• Shifter/Brake Lever Combo: Shimano Dura-Ace Di2 ST-R9270 / BR-R9270 (Wireless shifters + pre-bled hydraulic hoses: 1000mm front / 1700mm rear + Flat Mount calipers with brake pads). J-Kit configuration for simplified internal frame routing.

• Brake Rotors (Included): Premium Shimano Dura-Ace RT-CL900 Center Lock disc rotors with internal serration lockrings. Pure pro-peloton configuration: 160mm for the front wheel (maximum stopping power) and 140mm for the rear wheel (optimum weight and modular control).

• Electronic Rear Derailleur: Shimano Dura-Ace Di2 RD-R9250 12-speed (Features integrated charging port and Bluetooth/ANT+ connectivity).

• Electronic Front Derailleur: Shimano Dura-Ace Di2 FD-R9250 2x12-speed (Braze-on style, clamp adapter not included).

• HOLLOWTECH II Crankset: Shimano Dura-Ace FC-R9200 2x12-speed. Crank arm length: 172.5mm, chainring combo: Mid-Compact 52/36T.

• Cassette Sprocket: Shimano Dura-Ace CS-R9200-12 12-speed. Range: 11-30T (Gear steps: 11-12-13-14-15-16-17-19-21-24-27-30). Backward compatible with standard 11-speed Shimano freehub bodies as well as the new dedicated 12-speed road splines.

• Chain: Shimano XTR/Dura-Ace CN-M9100 12-speed (Includes Quick-Link connector).

• Internal Battery: Shimano Di2 BT-DN300 (3-port model designed to sit hidden inside the seatpost).

• E-Tube Electric Wires: Shimano EW-SD300 (1x 700mm + 1x 1200mm to connect derailleurs directly to the internal battery).

• Charging Cable: Shimano EW-EC300 (1700mm length, also compatible with Shimano power meters).

INCLUDED BRAKE HARDWARE:

• Front Flat Mount adapter (for 160mm rotor setup)

• High-performance resin formula brake pads with Ice-Technologies cooling fins L05A

Assembly Note: The bottom bracket and caliper-to-frame mounting bolts are NOT included in this kit and must be sourced separately to match your frame's specific shell and chainstay depth.

Technical Specifications Table

CicloBottega Workshop Tech Tip

Mechanic's Advice on the Gearing & Rotors:

Upgrading to Shimano 12-speed Dura-Ace has completely resolved a classic rider dilemma: finding the perfect gear step. With the 11-30T 12-speed block, you finally get the 16-tooth sprocket back—the missing link to preserving an exact cadence on flat, high-speed pacelines. The ST-R9270 levers offer spectacular ergonomics, with slightly inward-angled hoods mimicking your wrists' natural posture.

Furthermore, including the top-tier RT-CL900 rotors adds incredible value to this kit. Shimano re-engineered the carrier arms to drastically minimize heat deformation. Running a 160mm front and 140mm rear combo is the exact configuration preferred by 90% of the pro peloton: it gives you endless power under hard braking upfront, while keeping the rear end light, predictable, and chatter-free on tricky, loose road surfaces. Don't forget to download the E-Tube Project mobile app to configure multi-shift speeds, toggle Synchro-Shift modes, and check battery levels.

Shipping, Secure Packaging & Warranty

• Industrial-Grade Component Protection: Given the premium technological value of this groupset, CicloBottega ships the original Shimano parts safely layered inside an outer heavy-duty double-wall transit carton to eliminate road shock or package compression risks. Di2 electronics are secured against static charge.

• Free Fully Insured Freight: Shipped via express tracked courier service within 24/48 hours across Italy, with comprehensive transit insurance included at checkout.

• Official Distributor Warranty: 100% authentic original component kit backed by a 2-year official Shimano Italy warranty.