Shimano GRX RX825 Di2 2x12 Speed Groupset Kit

Shimano GRX – United in Gravel

Gravel cycling is not meant to be overly complicated. The heart and soul of cycling’s drop bar, dirt road discipline is rooted in simplicity, inclusivity, and adventure. No ride is out of bounds. All are welcome to join. Gear should be functional and reliable but need not break the bank.

That’s why whether you’re a grizzled gravel cycling veteran or brand new to the road (or trail) less traveled, you’ll appreciate the latest iteration of SHIMANO’s groundbreaking—and industry-first-gravel-specific GRX component group. Designed to help you get the most from your next unpaved adventure, RX820 delivers top-tier performance without an over-the-top price.

Three new 12-speed GRX drivetrains feature SHIMANO’s legendary precise and reliable mechanical shifting with different gearing ranges to cover the full spectrum of riders and rides.

GO FOR GRAVEL (AND STOP FOR IT, TOO)

Shimano GRX Di2 ST-RX825 Shifters (w/ BR-RX820 Calipers) feature a wireless gravel-specific cockpit where raised hoods with ribbed surface texture and anti-slip brake levers provide ultimate hand security no matter how spicy the ride gets. That secure hand position is enhanced with the location of the third Di2 button on the inside of the hood. Whether used as another shift location or for scrolling through screens on a cycle computer, this third button is another way to fully experience Shimano's electronic Di2 system.

The new dual control levers also employ a gravel-optimized body shape cross-section for seamless integration with flared handlebars. Rounder in shape, the transfer from handlebar to hood is smoother and creates a larger surface area to help eliminate pressure points.

Like its 12-speed Di2 siblings, the new GRX Di2 system is wired where it makes sense, featuring a central, multi-port battery (not included) that supplies stable, long-lasting power to both front and rear derailleurs. Smaller diameter wires (not included) connect directly from the battery to each derailleur, eliminating the need for junctions and streamlining the build process. The central internal battery also simplifies charging and remains secure over the roughest roads, trails, or whatever less traveled path a rider may choose.

The GRX BR-R820 disc brake caliper brings a new level of control to gravel cycling with enhanced modulation and a quicker initial braking point. And despite its smaller construction, the system is quieter and easier to maintain.

ENHANCED CUSTOMIZATION

Using Shimano's E-TUBE PROJECT Cyclist application, riders can choose between different gear shift intervals for multi-shift, customize shift button assignment (what buttons perform which functions), program different automatic shift modes like Synchronized and Semi-Synchronized shifts, and fine-tune shifting.

Shimano's new FRONT SHIFT NEXT functionality lets you utilize E-TUBE PROJECT to program any 12-speed Di2 button to shift the front derailleur to whichever chainring you are not currently using and then toggle back and forth using the same button. The result is simpler, more intuitive shifting for less-experienced riders and quicker decision-making for veteran riders in the heat of competition.

Along with dramatically simplifying the gear-changing process, Shimano FRONT SHIFT NEXT can also free up other switches to handle tasks such as moving through multiple screens on a paired cycle computer, turning on and off compatible lights, or hitting the "lap" button on your cycle computer so you can keep your hands securely in place, even during your hardest efforts.

FEATURES:

• Wireless Di2 Connectivity
• 2x12-Speed Dual-Control Lever
• Gravel-specific brake lever and bracket ergonomics
• New flared drop bar optimization
• Anti-slip coating on brake lever surface
• Three Di2 buttons per lever for E-TUBE PROJECT Cyclist customization
• Replaceable coin cell batteries (2 CR1632) with expected lifespan of 3.5 to 4 years
• 10% wider pad clearance decreases brake noise
• Maintenance-friendly bleeding process
• Flat Mount
• Levers: 415g /pair
• Calipers: 146g (Front) 136 g (Rear)

WHERE THE MAGIC HAPPENS

The Shimano RX825 Rear Derailleur features Shimano's pioneering Shadow RD+ technology. With its convenient on/off switch, Shadow RD+ makes removing the rear wheel easy when turned off. When on, the drivetrain is under additional tension that makes for a quieter ride and more precise shifting.

Like on Shimano's road 12-speed Di2 systems, the rear derailleur is also the communication hub of the drivetrain, communicating wirelessly with the shift levers, compatible cycle computers, and E-TUBE PROJECT Cyclist via a smartphone. It also houses the system's charge port and the multi-function button which allows riders to easily check battery level, pair via Bluetooth, and enter adjustment mode for both derailleurs.

Using Shimano's E-TUBE PROJECT Cyclist application, riders can choose between different gear shift intervals for multi-shift, customize shift button assignment (what buttons perform which functions), program different automatic shift modes like Synchronized and Semi-Synchronized shifts, and fine-tune shifting.

FEATURES:

• SHIMANO SHADOW RD+ Chain Stabilization
• Integrated D-FLY Connectivity and Charging
• 12-speed
• Compatible with 11-34T and 11-36T cassettes
• 310 grams

DOUBLE THE RINGS, DOUBLE THE FUN

Like the very first GRX groups, the Shimano RX825 Di2 Front Derailleur employs a wider, +2.5mm chainline for improved tire clearance. This is especially helpful with the trend towards wider tires and events where mud is expected.

Shimano's new FRONT SHIFT NEXT functionality let's you utilize Shimano's user-friendly E-TUBE PROJECT Cyclist app to program any 12-speed Di2 button to shift the front derailleur to whichever chainring you are not currently using and then toggle back and forth using the same button. The result is simpler, more intuitive shifting for less-experienced riders and quicker decision-making for veteran riders in the heat of competition.

Along with dramatically simplifying the gear-changing process, Shimano FRONT SHIFT NEXT can also free up other switches to handle tasks such as moving through multiple screens on a paired cycle computer, turning on and off compatible lights, or hitting the "lap" button on your cycle computer so you can keep your hands securely in place, even during your hardest efforts.

FEATURES:

• Chainline +2.5mm vs. conventional road FD
• Wider tire clearance
• 2x12-speed
• 142 grams

The Groupset Kit contains:

 

1x        Shimano GRX Di2 FD-RX825 Front Derailleur

1x        Shimano GRX Di2 RD-RX825 12-Speed Rear Derailleur

1x        Shimano ST-RX825 Shift-Brake Lever L.H / BR-RX820 Rear Disc Brake

1x        Shimano ST-RX825 Shift-Brake Lever R.H / BR-RX820 Front Disc Brake

1x        SHIMANO EW-EC300 CHARGING CABLE RD-R9250/ RD-R8150/ FC-R9200P 1700MM

1x        SHIMANO BT-DN300 BATTERY Di2 INTERNAL TYPE

1x        SHIMANO EW-SD300-I ELECTRIC WIRE Di2 INTERNAL - 900mm

1x        SHIMANO EW-SD300-I ELECTRIC WIRE Di2 INTERNAL - 1200mm