Shimano Dura-Ace R9150 Di2 11 Speed Groupset

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Description

Shimano Dura-Ace R9150 Di2 11 Speed Groupset

Shimano Dura-Ace R9150 Di2 11-Speed Groupset

Each component of Shimano’s Dura-Ace R9150 groupset has been re-engineered to ensure maximum stiffness, performance and efficiency at the lightest possible weight.

Synchro Shift

For the first time in a Dura-Ace groupset, Shimano’s innovative Synchro Shift is now available as a programmable Di2 option; Synchro Shift creates an intuitive experience with synchronised front and rear shifting, which can be custom programmed. With ‘full’ and ‘semi’ Synchro Shift available, this intuitive new mode automatically reacts when you shift from one chainring to another. Remove the guess work as your rear derailleur shifts automatically to minimise the gear step so you can keep riding with a smooth cadence and rhythm.

Di2 E-Tube

The Di2 E-Tube system provides unmatched shift performance, reliability and rider customisation. Along with enhanced Di2 functionality, the front and rear Di2 derailleurs are connected via Shimano’s small EW-WU111 wireless unit allowing for an ANT Private connection between Dura-Ace R9100 and third party devices. These components can be connected to Shimano´s E-Tube software, which supports the programmable aspects of the Di2 electronic gear shifting system. Use the Bluetooth technology for seamless access on smartphones and tablets.

Dura-Ace R9100 Crankset

The Shimano Dura-Ace R9100 Compact Crankset is completely re-designed to offer the very best combination of light weight and stiffness. It features Shimano’s iconic 4-arm hollow spider that is made from hollow-forged aluminium.

Although the crank arms and spider arms are noticeably bigger, which increases stiffness, the overall weight has dropped by 7g over the previous edition of Dura Ace.

The crankset has been adapted to work with disc brake road bikes that generally have 135mm rear hub spacing and shorter chainstays without the need to increase Q-factor thanks to its wider chainring spacing.

Dura-Ace R9100 Crankset Features:

  • Material: Hollow-forged Aluminium
  • Enhanced design saves 7g while maintaining rigidity
  • Iconic 4-arm construction maintains high rigidity and reduces weight
  • Optimised crank arm design strengthens key stress zones
  • New chainring tooth profile is adapted for race bike specific disc brake systems
  • Accommodates shorter chainstays (410mm) with 135mm OLD
  • Hollowglide chainring construction maintains smooth shifting whilst reducing weight and increasing stiffness

Dura-Ace Di2 R9150 2×11 STI Shifter Set

The Dura-Ace Di2 9150 shifters feature an ideal ergonomic shape that is comfortable in the hand and have been updated to be more precise and more adaptable than previous editions. The shift paddles now feature a more defined “click” and have been extended in length for more confident and comfortable shifting.

E-Tube compatibility means that the function of the shift paddles can be customised to suit the rider.

The Di2 R9150 shifters now include Synchro Shift technology that automatically moves the rear derailleur when the front ring is changed or moves the front chainring with the rear shifts to optimise chainline and drivetrain efficiency.

Dura-Ace Di2 R9150 2×11 STI Shifter Set Features:

  • Material: Carbon Composite Plastic (Hood)
  • More control and confidence in race conditions
  • Dedicated brake lever shape, stroke, contact point, stiffness and dedicated shift paddles
  • Lightweight
  • More intuitive, quicker shifting operation
  • More defined click feeling and ergonomic shift lever position
  • Each switch has the option for multi-shift On or Off
  • E-Tube project
  • Ideal ergonomic cover shape with better thickness and tenderness
  • Simple set up and maintenance
  • Easy replace hood cover
  • Customise the shifts to suit your riding style
  • Weight: 460g (Pair)

Dura-Ace Di2 R9150 Rear Derailleur

The Dura-Ace Di2 R9150 Rear Derailleur takes the Shadow technology from its mountain bike range and introduces it to the road. The shadow design places the rear derailleur under the chainstay and cassette to give a slimmer profile, which not only helps with aerodynamics but also offers extra protection in crashes.

The Shadow design offers faster wheel changes thanks to the fact that it moves the derailleur out of the way of the dropouts. It also offers faster and more precise shifting than ever before.

The new derailleur comes in only one cage size that will work with cassette sprockets up to 30T. With this new Di2 9150 groupset, Shimano brings Synchro Shift to the road too. This technology allows you to shift to higher or lower gears with your right hand shifter and both front and rear derailleurs will operate to optimise chainline. It will also automatically shift the rear mech when you change from the large ring to the inner ring to maintain smoothness.

Dura-Ace Di2 R9150 Rear Derailleur Features:

  • Maximum Sprocket: 30T
  • Minimum Sprocket: 11T
  • Maximum Front Difference: 16T
  • Total Capacity: 35T
  • Ergonomic shifting operation without stress
  • Shimano Synchronised shift
  • Low profile rear derailleur design
  • Shimano Shadow RD
  • Race endurance for less damage in crash
  • Maintains compact and smooth appearance
  • Weight: 204g

Dura-Ace Di2 R9150 Braze On Front Mech

The Dura-Ace 9150 front derailleur delivers unmatched shift quality, for quick and smooth performance even under high pedalling torque. Combined with Shimano’s Synchro Shift customisable programming, Dura-Ace Di2 delivers a level of intuitive shift performance never before seen.

Dura-Ace Di2 R9150 Braze On Front Mech Features:

  • Top Gear Teeth: 46-55T
  • Chainstay Angle: 61-66
  • Chain Line: 43.5
  • Ergonomic shifting operation without stress
  • Shimano Synchro Shift
  • Race endurance for less damage in crash
  • Quick and smooth front shifting under high pedalling torque
  • Maintains compact and smooth appearance
  • Weight: 104g

SD50 Di2 Electric Wires

The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts.

Groupset includes 1x1200mm, 1x1000mm, 1x700mm and 3x300mm wires.

SD50 Di2 Electric Wire Features:

  • Di2 uses a fully removable individual cable system from the battery indicator junction box enabling fine tuning with the correct cable length to each component for easy and tidy fitment
  • EW-SD50 wires are required to connect the junction (either SM-JC40 external or SM-JC41 internal to the rear mech, front mech, battery and to the handlebar battery indicator junction box
  • EW-SD50 individual wires are available in varying lengths, there is no need (or facility) to cut these cables
  • Reliable and secure water resistant connectors

JC41 E-Tube Di2 Internal Junction Box

The Shimano Di2 SM-JC41 internal junction box is the Grand Central Station of the e-tube Di2 system. All of the component and battery wires meet here before running out to their respective components. All of the wires that connect to the junction box use the same connector to make assembly that much easier.

JC41 E-Tube Di2 Internal Junction Box Features:

  • SM-JC41 cable junction for internal wire routing
  • Junction is required for connection of rear mech, front mech, battery, and cable to battery indicator junction box
  • To be positioned neatly inside frame tubing when connected
  • Cables sold separately
  • Reliable and secure water resistant connectors
  • This junction box is only made to be mounted internally on frames specially designed for an internally routed system

Di2 EW90 Junction-A Box – 3 Port

The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts.

Di2 EW90 Junction-A Box – 3 Port Features:

  • This junction A is required to connect the shifters via E-tube wires to the downtube junction wire
  • 3-port design, one for downtube wire to bottom bracket junction, two for shifter connection
  • Battery level indicator feature
  • E-tube EW-SD50 wires not included
  • Additional charging point when using internal battery
  • Gear index setup switch to allow fine tuning via shifter buttons
  • Reliable and secure water resistant connectors
  • Stem mounting strap included

BT-DN110 Di2 Battery

Shimano’s BT-DN110 Di2 7.4V lithium-ion battery is suitable for concealed internal mounting. This high-end lithium-ion battery will ensure the consistent, smooth, and precise functioning of your Di2 setup.

BT-DN110 Di2 Battery Features:

  • Long battery life (up to 2000km when fully charged).
  • Internal mounting.
  • Lightweight
  • Excellent sealing and reliability
  • Weight: 50g

Di2 BCR2 Charger for BTR2

Di2 charger for the internal battery that will keep your Di2 system shifting.

BT-DN110 Di2 Battery Features:

  • Di2 uses a powerful long-life 7.4V Li-Ion battery: keep it in top condition and ready for shifting with this specific Shimano Di2 charger
  • 1.5 hour charge time
  • Plugs in directly to the SM-EW90 handlebar junction A
  • Can also be used for completing firmware updates when linked to E-tube software on your PC

SM-GM01 E-Tube Di2 Grommet

E-tube Di2 internal cable routing grommets to protect the wires as they enter the frame from snagging and provide a neat, clean look to your Di2 cable routing.

Features:

  • Protective solution that is quick and easy to install
  • Pack of 4

Dura-Ace R9100 Road Brake Caliper Set

The Dura-Ace 9100 brakes have been developed to offer greater tyre clearance for up to 28c tyres while still maintaining the aerodynamic advantage of previous editions. They are now also up to 43% stiffer than previous Dura-Ace brake calipers and offer a linear braking curve for improved feel and function.

Dura-Ace R9100 Road Brake Caliper Set Features:

  • Mount Type: SLR EV Dual Pivot
  • The best balance between rigidity, weight and stopping power
  • More predictable, linear braking curve
  • Clear contact feeling with better linearity
  • More aerodynamic QR lever
  • Sleek design
  • Less gap between each arm
  • Better clearance with wider tyre (up to 28c)
  • Weight: 326g (Pair)

Dura-Ace R9100 Cassette

Shimano have retained the traditional close ratio cassettes from previous editions of Dura-Ace; all cassettes in the range will be compatible with the one rear derailleur so you can easily swap your cassettes out based on terrain.

The cassette is manufactured from a lightweight alloy and carbon fibre spider that houses alloy sprockets. The 5 largest sprockets are manufactured from titanium to keep the weight low. The sprockets are also extensively cut away and drilled to further reduce weight without reducing rigidity.

The very best and quickest shifts are optimised thanks to the Hyperglide EV sprockets that have a computer designed tooth configuration with contoured shift gates.

Dura-Ace R9100 Cassette Features:

  • Hyperglide EV 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
  • Largest sprockets are mounted on lightweight alloy and carbon carriers to reduce weight and increase rigidity
  • 5 largest sprockets are made from titanium to reduce weight without sacrificing strength
  • Sprockets are extensively cut away and drilled to further reduce weight without reducing rigidity
  • Nickel-plated finish offers hard wearing resistance to corrosion
  • Alloy cassette lockring
  • Weight: 175g (11-25T), 193g (11-28T), 211g (11-30T), 189g (12-25T), 205g (12-28T)

Dura Ace 11-speed Chain CN-9000 114 Links

The new symmetrical 11-speed Dura-Ace chain uses hollow pins for low weight, PTFE coating for smooth shifts and offers increased durability.

Dura Ace 11-speed Chain CN-9000 114 Links Features:

  • PTFE coating
  • Increased durability (vs. CN-7900)
  • Weight: 243g

Bike Sizing Guide

Choosing the bike size depends on the type of bike, your height, your riding style, and your preference. A correct fitting bike will be more comfortable, more efficient and more fun to ride. This bike size guide gives our customers general advice on choosing the right size. It is a guide only and we always recommend visiting one of our stores or contacting one of our experts from our contact us page.

To get started, think about your style of riding, measure your height and use the links above for sizing on relevant bike types.

 

Measure your height

To find the correct sized bike you will need to measure your height and your inside leg. For your height, stand against a wall and mark the wall with a pencil so it's level with the top of your head. Then measure from the ground up to the mark (having someone to help might make this easier). For your inside leg measurement, stand against a wall and using a book hold it in between your legs into your groin and make sure it's flat against the wall. Measure the height from the book to the floor. (Again it might be easier to get a friend to help). If your height is on the cusp of the size range, your reach is often the deciding factor in which size to go for. To find out if you have short or long reach you will need to measure your ape index. This is your arm span minus your height. If you have a positive ape index then go for the larger size, or if you have a negative ape index go for a smaller size.

 

The type of bike

What type of bike you choose will affect the bike size you buy. The type or style of riding that you do will also affect which size you need. For example a mountain biker that wants to ride more aggressively and would like a more manoeuvrable bike may prefer a size smaller than they would normally take. Likewise a cross country racer that is looking for a flatter and speedier mountain bike may prefer a size larger than they would normally take. There is no definitive right or wrong size, it all comes down to personal preference and what feels comfortable. The different types of bikes are all explained within our buying guides.

 

How are bikes measured?

Bikes are measured by their seat tube length. This measurement is normally from the centre of the bottom bracket (BB) or the centre of the bolt that attached the crank arms. This differs by brand, some measure to the top of where the top tube meets the seat tube, or even the centre of the top tube. Mountain bikes are either measured in inches or descriptive sizes (small, medium etc). Road bikes are in centimetres or descriptive sizes where as Hybrid bikes can be any one of the three. Bikes also get longer as they go up in size (relative to the frame size) but different brands can be inherently longer or shorter than others.

 

Stand over height

Stand over height is how tall the frame is from the ground. Stand over height measurements are to the top of the top-tube. Ideally you want at least 2cm of clearance between you and the frame. In theory your stand over height is your leg measurement minus 2cm. It it worth measuring your inside leg with your shoes on so you can establish your stand over height. Should you need to jump off the saddle quickly, the clearance between you and the frame will prevent any injuries.


This handy chart should show you the right size of MTB you need based on your height. Measure your height accurately and check the manufacturer’s measurements too. You can also visit us in store to speak to an experienced member of staff.

Rider Height Suggested Mountain Frame Size
Feet & Inches Centimetres Frame Size (inches) Frame Size (cm) Frame Size
4'10" - 5'2" 148cm - 158cm 13" - 14" 33 - 37 View all X-Small Bikes
5'2" - 5'6" 158cm - 168cm 15" - 16" 38 - 42 View all Small Bikes
5'6" - 5' 10" 168cm - 178cm 17" - 18" 43 - 47 View all Medium Bikes
5'10" - 6'1" 178cm - 185cm 19" - 20" 48 - 52 View all Large Bikes
6'1" - 6'4" 185cm - 193cm 21" - 22" 53 - 57 View all X-Large Bikes
6'4" - 6'6" 193cm - 198cm 23" - 24" 58 - 61 View all XX-Large Bikes

Shop All Mountain Bikes

This handy chart should show you the right size of road bike you need based on your height. Measure your height accurately and always check the manufacturer’s measurements too. You can also visit us in store to speak to an experienced member of staff.

Rider Height Suggested Road Bike Size
Feet & Inches Centimetres Frame Size (cm)
4'10" - 5'0" 148cm - 152cm XX-Small (47cm - 48cm) View all XX-Small Road Bikes
5'0" - 5'3" 152cm - 160cm X-Small (49cm - 50cm) View all X-Small Road Bikes
5'3" - 5'6" 160cm - 168cm Small (51cm - 53cm) View all Small Road Bikes
5'6" - 5'9" 168cm - 175cm Medium (54cm - 55cm) View all Medium Road Bikes
5'9" - 6'0" 175cm - 183cm Large (56cm - 58cm) View all Large Road Bikes
6'0" - 6'3" 183cm - 191cm X-Large (58cm - 60cm) View all X-Large Road Bikes
6'3" - 6'6" 191cm - 198cm XX-Large (61cm - 63cm) View all XX-Large Road Bikes

Shop All Road Bikes

Additional information

Size

XS, S, M, L, XL, XXL

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