Shimano GRX 810 Upgrade Kit

The top-of-the-range GXR Kit, based on Shimano Ultegra technology, for 11 x 2-speed drivetrains with 11-speed and 2-speed shift-brake levers andthe GXR 810 rear derailleur for 11-30 to 11-34 tooth cassettes

Shimano GRX, the new gravel components designed for 11-speed drivetrains and cassettes up to 42 teeth. With the new 48/31-tooth crankset or single-chainring cranksets with 40- or 42-tooth chainrings, the GRX components offer a wide gear range for a variety of applications, from gravel and cyclocross to touring. Shimano GRX, the first gravel-specific component family designed equally for speed and safe bike handling on loose surfaces, is the result of an intensive and extensive research, testing and development process that incorporated information and feedback from countless riders who are out and about on trails, forest tracks, gravel roads or tarmac. Whether it’s gravel riding in the strictest sense, road bike adventures off-road, bikepacking, commuting or the demands of competitive cyclocross riders: Shimano’s GRX components offer countless options that leave nothing to be desired in terms of gear ratios and spacing, customisable ergonomics, integrated control of dropper seatposts, right through to specific gravel wheelsets with wider rim profiles. Either 11-speed road or 11-speed MTB cassettes can be used. Gear ratios ranging from 11-30 teeth to 11-42 teeth are available

Shimano STI ST RX810 Disc Lever:

With the STI Disc ST-RX810 brake-shifter, Shimano introduces a very compact brake-shifter for hydraulic disc brakes and mechanical shifting systems. Ergonomics specially adapted for gravel use are characterised by a brake lever pivot point raised by 18 mm, a curved lever shape and non-slip textures on the contact surfaces, ensuring optimum grip even on the roughest terrain. These disc brake levers are based on Ultegra STI technology and are compatible with Shimano’s mechanical Dura-Ace 9000, Ultegra 7000 and 105 7000 11-speed groupsets. Shimano’s engineers have succeeded in integrating a mineral oil cylinder, including a complete braking system, into these nevertheless very compact mechanical shift-brake levers. The brake levers are made from aluminium; this technology guarantees maximum stiffness, durability and a robust design. Thanks to the improved positioning of the brake cable, a smooth braking action is achieved, leading to optimised control in extreme conditions. The Dual Control shift/brake levers can be optimally adjusted to the rider via a grip width adjustment and are also very well suited for riders with small hands. Shifting can be done much faster with the new shift levers. This is achieved through a 20 per cent shorter cable. The grip sections feature an ergonomic design for improved comfort – even over long distances. The GRX STI levers can be combined with the BLRX812 auxiliary brake levers. These are mounted between the shift levers and the brake on the top tube, just like classic cross-country brake levers. This ensures full control over the bike in every riding situation.

Shimano BR-RX810 disc brake caliper:

The BR-RX810 road bike disc brake caliper is torsionally rigid and approved for brake discs up to 160 mm. Equipped with brake pads featuring external cooling fins, brake heat is reliably dissipated. These calipers are compatible with all Shimano disc brake levers. Recommended brake discs: SM-RT800, SM-RT86

Flat Mount Standard:

The new Flat Mount caliper standard for road bike brakes reduces weight and offers a significantly sleeker look. With the Flat Mount Standard, the rear brake caliper sits directly on the chainstay; no adapter is required for caliper mounting. The bolts pass through the chainstay from below directly into the brake caliper. A flat adapter is still required on the fork. The adapter is screwed onto the rear of the fork leg, with the brake sitting directly on the adapter.

Contents of the Shimano GRX 810 Gravel Kit:

• Shimano GRX rear derailleur, RD RX810
• Shimano GRX front derailleur, FD RX810
• Shimano GRX STI, Dual Control shift/brake levers, 11x2-speed, ST RX800
• Shimano GRX disc brake calipers BR RX810, flat mount
• Front wheel adapter, mounting bolts
• Shimano shift cables
• Shimano disc brake hoses 100 and 170 cm, SM-BH-90-JK-SSR
• without oil

Herstellerinformation: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com | EU contact: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, The Netherlands, www.shimano.com