Instead of telling gravel riders what they needed, we asked them what they wanted. Shimano spent two years listening and countless hours speaking with gravel enthusiasts from all over the world. We took to dirt and gravel roads, narrow singletrack paths, creek crossings, and mountain passes to test ourselves and our notions of drop bar cycling. We pinned on race numbers and packed up bikepacking bags. We choked on dust and reveled in mud. And the result of all that riding and all those new friendships? First, Shimano’s Gravel Alliance and now, Shimano GRX, the world’s first dedicated gravel component series.Choice. Shimano’s new GRX line is all about choice. Shimano doesn’t want to pigeonhole the way you ride, or decide for you what the best solution is for your riding style. While we’ve long been fans of double chainring drivetrains, we also recognize the value of a single chainring system. With GRX, Shimano offers both, each with gearing options that allow you to tailor your drivetrain to suit your tastes.With two different derailleur cage lengths, Shimano GRX ensures stable shifting and chain retention across a wide range of gearing options. Looking for maximum range while maintaining road cassette progression? Go with GRX’s 800 series 2x11 RD-RX810 or Di2 RD- RX815 rear derailleurs, designed for close ratio clusters, with 48/31 chainrings and an 11-34 cassette. Paired with 700c x 40mm tires, it delivers a top gear similar to a road bike with 25mm tires and a 50 x 11 gear. And on the low end, with its 31 x 34 combination, you get a gear that early mountain bikers would envy. It is the lowest gear currently on offer for premium road drivetrains (aside from Shimano’s own GRX 2x10 30-36 offering), perfect for climbing loose, dirt and gravel surfaces.Want to drop some weight, simplify your shifting, and still maintain a versatile range? Consider the 1x11 GRX option with either Shimano’s 11-40 or 11-42 cassette and a 40 or 42-tooth equipped crankset, shifted by a RD-RX812 or Di2 RD-RX817 wide ratio rear derailleur. You’ll lose a little, absolute top speed, but still love the 1:1 low gear ratio. If you live in an area without sustained or steep climbs, you might love the smaller gear steps of that same 1x11 front chainring with an 11-34 cassette. Options abound.What about when the weather turns autumnal and you contract a case of cyclocross fever? GRX 1x11 can quickly transform from gravel fun to CX focused with the change of a cassette.No matter the option you select, GRX rear derailleur offerings feature Shimano’s SHADOW Plus chain stabilizer that can be turned on or off depending on conditions. SHADOW Plus revolutionized the mountain bike world and now it’s been tuned for gravel and rough road riding in GRX. With a quieter drivetrain, SHADOW Plus helps you engage with your surroundings and enjoy time outside.Today’s gravel riders demand more of their bikes and of themselves. Shimano GRX gives them the options they need to Explore Beyond, tailoring their drivetrains to suit their needs and exceed their expectations. We’ll see you out there!Designed for riding on rough roads, through gravel and mud, to be able to carry on in comfort, stress-free, to wherever you want, to allow you to achieve that unique sense of accomplishment. The first groupset designed for Gravel riding Explore beyond. Introducing SHIMANO GRX.Game-Changing Innovation.Even on the roads less travelled, our new GRX tech will keep things smooth, silent and safe – with you always in control.Designed from the ground up for gravel adventure.Mix and match components to customise your bike for a wide range of terrains – and ride the way you want!Key Features:Adjustable chain stabilizer prevents chain slapping and drops,Switch stabilizer ON/OFF to match the terrain,Gravel-tuned clutch tension,Maximum front T difference: 16T,Silent and uninterrupted rear shifting on rough terrain,Low sprocket: Max. 36T/Min. 30T,Total capacity: 41T,Smooth and reliable mixed surface shifting,Compatible with current 10s road DUAL CONTROL LEVER,Wide range front gearing,Top sprocket: Max. 11T/Min. 11T.
Lightweight front Conventional swing 10-speed trekking derailleur for smooth gear changesDual Pull design for use with top or bottom cable routingThe regular Multi-fit band clamp assures easy and secure fit on any frame type, with adapters to suit seat tube sizes 34.9, 31.8 and 28.6 mmReinforced light weight chain guide adds rigidity and improved responseWider pivot link increases torsional rigidityEasy access angled adjustment screws and clamp boltAngled inner chain guide tail for increased tyre clearance10-speed design - for use with 10-speed trekking drivetrainsSpecifically developed for 68 and 73 mm bottom bracket shells with a 50 mm chain line63-66 degree chainstay to seat tube angle range48 tooth outer ring compatible, total capacity 22 teeth.
R55C4 brake shoe inserts and fixing bolts,For Carbon Rim,Genuine Shimano replacement part .
R55C4 cartridge type brake shoe set,Genuine Shimano replacement part .
High quality, long lasting rear rack mounted lithium-ion battery pack for Shimano STEPS systems1000 charge cycles without significant power loss,Approximately four hours charge time,High 418Wh capacity (36V, 11.6Ah),Average weight 2600g.
Great value front derailleur that delivers accurate and low-friction shiftingCompatible with 6-speed drivetrains,Down swing (conventional) design isac light action and compatible,For use on MTB style bikes with 66 to 69 degree seat tube to chainstay angle,Developed to work with 48 tooth outer chainring.
Ultegra components offer an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders Low profile aerodynamic direct mount Super SLR-EV Dual-Pivot design provides superior brake performance and light action,Must be used in conjunction with super SLR levers for correct leverage ratio,Enhanced brake arch proportions give a quicker linear response and increased power,Can be used on forks with direct mounts,Low profile outer cable stop position improves cable routing for reduced friction,Cartridge brake shoes for easy replacement,Convex washers on the brake shoes offer toe-in brake adjustment and easy alignment,Lightweight aluminium construction, with an anodised finish to preserve the good looks,Added clearance for compatibility with 28C tire size.
HG Cassette Sprocket (11-speed)Key Features:High performance rider tuned gearing with wider gear choices,Available Ratios: 11-28T, 11-30T, 11-32T, 12-25T,Compatible chain: HG-EV 11-speed/ HG-X11.
Key Features:High performance 10-speed Dyna-Sys cassette,Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load,Close ratio gearing allows a more efficient use of energy through finer cadence control,Six largest sprockets are mounted on lightweight alloy carriers to reduce weight and increase rigidity,Sprockets are cut away and drilled to further reduce weight without reducing rigidity,Chrome-plated finish offers hard wearing resistance to corrosion,Alloy cassette lockring,For 10-speed HG-X MTB chains,Weight: 323 g for 11 - 34T.
Precision-engineered Ultegra STI levers with hydraulic disc brakes give you control, modulation and power with minimal effort in all riding conditionsShift cables are routed under the bar tape: re-development and positioning of the internal mechanism in combination with Polymer coated cables have made this possible, providing faster, lighter and smoother shifting,Vivid indexing provides a constant amount of shift lever force across all 11 sprockets,Ergonomic shift arc follows natural hand movement with inward shift stroke distance reduced for rapid and precise gear changes,Hydraulic brake lever provides excellent stopping power with less effort especially from the hood position,Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear,Free stroke adjustment for pad to rotor contact setting,Tuneable reach adjusters enable custom fitment for all hands,Kit contains left hand bled ST-R8020 STI's, BR-R8070 flat mount brake callipers with pads, hoses and mineral oil (without rotors or adapters).
Key Features:Wide link Shadow design Dyna-Sys 10-speed top normal Deore rear derailleurDouble servo-panta mechanism for smooth light action shifting,Single tension spring prevents contact with the chainstay resulting in a silent ride,Alloy and steel construction leads to lower weight without compromising strength and durability,Wide link design increases rigidity and service life,Top normal return spring lends to incredibly intuitive operation when combined with Rapid fire shifters,Large 11 tooth pulleys are used for longer life,Two fluorine-coated link bushings for low-friction operation,Dyna-Sys HG-X 10-speed compatible only,47T capacity SGS cage,Compatible with 32-36T low sprocket.
Key Features:SLX double top swing low clamp band mount front derailleur,Wide pivot link increases torsional rigidity,Easy access angled adjustment screws and clamp bolt,Angled inner chain guide tail for increased tyre clearance,Designed specifically with modern trail bikes in mind,Dual Pull design for use with top or bottom cable routing,Dyna-Sys11 11-speed MTB drivetrain compatibility,Specifically developed for 68, 73 mm and press fit 92 bottom bracket shells with a 48.8 mm chain line,34-38 tooth outer ring compatible,For 66-69 degree chainstay angle.