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:Excellent heat dissipation,Flat mount,Convenient tool access,Simple wheel replacement,Easy and clean bleeding system,Never hesitate to tackle rough surfaces,Simple set up and maintenance.
Ultegra hydraulic road disc brake offer an ideal balance of light weight and efficient braking, making it the perfect choice for both enthusiast and competitive ridersFront wheel use for flat mount forks with adapter to flip between 140 and 160 mm,Oversized 22mm ceramic pistons optimized for heat insulation, lightweight and stiffness,Opposed 2-piston design reduces leading effect and optimal pad wear increases braking control,Increased pad to rotor clearance reduces the chance of rotor drag,Direct flat mount and open design allows easy and quick wheel replacement,Forged calliper design is lightweight and rigid,One way internal fluid circuit makes bleeding easy,Mineral oil brake fluid is non-corrosive and less hazardous than conventional hydraulic brake fluid,Shim-less mounting bracket allows for quick installation and setting up,Recommended for use with Ice Tech FREEZA Center Lock SM-MT800 rotors for optimum braking performance,Comes complete with resin compound aluminium radiation fin pad further improves heat dissipation reducing brake surface temperature by 50 deg C,Inline hose routing for low profile design,Separate bleed port and valve screw for improved bleeding process.
Centre Lock Disc Brake RotorKey Features:Stable and versatile brake performance in the most demanding conditions,Available in Sizes 140 mm, 160 mm, 180 mm, 203 mm,High-performance and consistent brake performance,New ICE TECHNOLOGIES FREEZA construction for boosting heat dissipation.
RT-EM600 E-bike rotors with built in speed sensor magnet providing consistent braking performance through energy controlKey Features:Rotor houses the magnet necessary for speed sensor function on Shimano STEPS equipped E-bikes allowing frame clearance for wider tyres,Compatible with E8000 / E7000 / E6000 / E5000 systems and for rear wheel use only,Rotors are durable lightweight and rigid, using the proven Shimano Centre-Lock system giving increased strength and security with an easy set-up,Precision cut and drilled braking surface improves pad clearing in muddy conditions while aiding cooling under high load,Large alloy spider is a highly rigid and lightweight support for the rotor surface,Super polished braking surface gives excellent braking performance.
Key Features:Higher braking force with reduced input force at finger tips highly linear response, and braking power, stroke, and time lag reduced by 30% compared with M9000,New high rigidity brake hose and 1-piece aluminum caliper,26 g lighter (vs. BL/BR-M9000 with disc brake rotor),High-performance brake control,High rigidity,Lightweight,Straight hose connection.
SM-RT70 Ice Tech rotors give excellent performance using the proven Shimano Centre-Lock system providing excellent rigidity and security with an easy set-up.The clad steel / alloy / steel rotor construction allows heat generated from braking to radiate quickly through the aluminium core achieving surface temperature drops of around 50 deg C. When used with Ice Tech pads surface temperatures can drop from around 400 to 300 deg C, this provides great improvements in performance all round.Key Features:Ice Tech rotors achieve long pad life, less noise and less fade due to improved heat dispersion,Rotor contact surface has been developed for excellent pad clearing and cooling which increases pad performance and life,Comes complete with lockring.
Pair of genuine Shimano replacement pads,Titanium back plate with metal sintered braking compound,Will fit; BR-M9000, BR-M9020, BR-M8000, BR-M985, BR-M785, BR-M666, BR-S700, BR-R785, BR-RS785.
Key Features:Reliable and easy anti-loosen plate,6-bolt mounting system,Precision cut steel braking surface improves pad clearing in muddy conditions,Comes complete with mounting hardware,Resin pad compatible only.
Disc brake adapter mount for Shimano M985 and M988 Disc Brakes.
Key Features:SMRT76 rotors give excellent performance using the 6-bolt mounting system,Precision cut stainless steel braking surface improves pad clearing in muddy conditions while aiding cooling under high load,Rotor contact surface has been developed for excellent pad clearing and cooling which increases pad performance and life,Large forged alloy spider supports rotor surface, increasing rigidity and reducing weight,Comes complete with mounting hardware,Average weight for 160 mm rotor is 138 grams.
Interchangeable, precision engineered disc calliper mount adapter.Key Features:For post type disc callipers to be mounted to international standard frames
Replacement pads for use with Deore M515 and Nexave C601 mechanical disc brake systemsPair of pads with replacement springExactly the same specification as originally supplied, ensuring consistent performance.