Shimano Dura-Ace R9150 Di2 11 Speed Groupset Review

•   Shimano Dura-Ace R9150 Di2 Groupset (11 Speed)The Shimano Dura-Ace R9150 Di2 Groupset (11 Speed) is the highest level of groupset you can get from Shimano. Using Electronic shifting that can be customised to suit your riding style with a combination of components that ensure maximum stiffness, performance and reliable gear changes.Key FeaturesColour: BlackCassette Size: 11-25t, 12-25t, 11-28t, 14-28t, 11-30t, 11-32t, 11-34tBCD: 110mmCrank Teeth: 52-36t (Semi-Compact), 50-34t (Compact), 53-39t (Pro)Speed: 11 SpeedCrank Length: 172.5mm, 170mm, 175mmMaterial: AlloyShifting: ElectronicFront Derailleur Type: Braze OnRear Derailleur Type: Medium Cage (GS)BB: Threaded BSASynchro ShiftFor 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 guesswork as your rear derailleur shifts automatically to minimise the gear step so you can keep riding with a smooth cadence and rhythm.Di2 E-TubeThe 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 ChainsetThe Shimano Dura-Ace R9100 Compact chainset is completely re-designed to offer the very best combination of lightweight and stiffness. It features Shimano’s iconic 4-arm hollow spider that is made from hollow-forged aluminium.Dura-Ace R9100 Chainset Features:Material: Hollow-forged AluminiumEnhanced design saves 7g while maintaining rigidityIconic 4-arm construction maintains high rigidity and reduces weightOptimised crank arm design strengthens key stress zonesNew chainring tooth profile is adapted for race bike specific disc brake systemsAccommodates shorter chainstays (410mm) with 135mm OLDHollowglide chainring construction maintains smooth shifting whilst reducing weight and increasing stiffnessDura-Ace Di2 R9150 2×11 STI Shifter SetThe 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 chain-line and drivetrain efficiency.Dura-Ace Di2 R9150 2×11 STI Shifter Set Features:Material: Carbon Composite Plastic (Hood)More control and confidence in race conditionsDedicated brake lever shape, stroke, contact point, stiffness and dedicated shift paddlesLightweightMore intuitive, quicker shifting operationMore defined click feeling and ergonomic shift lever positionEach switch has the option for multi-shift On or OffE-Tube projectIdeal ergonomic cover shape with better thickness and tendernessSimple set up and maintenanceEasy replace hood coverCustomise the shifts to suit your riding styleWeight: 460g (Pair)Dura-Ace Di2 R9150 Rear DerailleurThe 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 chain-line. 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: 30TMinimum Sprocket: 11TMaximum Front Difference: 16TTotal Capacity: 35TErgonomic shifting operation without stressShimano Synchronised shiftLow profile rear derailleur designShimano Shadow RDRace endurance for less damage in crashMaintains compact and smooth appearanceWeight: 204gDura-Ace Di2 R9150 Braze On Front MechThe 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: 46-55TChainstay Angle: 61-66Chain Line: 43.5Ergonomic shifting operation without stressShimano Synchro ShiftRace endurance for less damage in crashQuick and smooth front shifting under high pedalling torqueMaintains compact and smooth appearanceWeight: 104gSD50 Di2 Electric WiresThe 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 fitmentEW-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 boxEW-SD50 individual wires are available in varying lengths, there is no need (or facility) to cut these cablesReliable and secure water-resistant connectors  JC41 E-Tube Di2 Internal Junction BoxThe 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 routingJunction is required for connection of rear mech, front mech, battery, and cable to battery indicator junction boxTo be positioned neatly inside frame tubing when connectedCables sold separatelyReliable and secure water-resistant connectorsThis junction box is only made to be mounted internally on frames specially designed for an internally routed systemDi2 EW90 Junction-A Box – 3 PortThe 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 wire3-port design, one for downtube wire to bottom bracket junction, two for shifter connectionBattery level indicator featureE-tube EW-SD50 wires not includedAdditional charging point when using internal batteryGear index setup switch to allow fine tuning via shifter buttonsReliable and secure water-resistant connectorsStem mounting strap includedBT-DN110 Di2 BatteryShimano’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.LightweightExcellent sealing and reliabilityWeight: 50gDi2 BCR2 Charger for BTR2Di2 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 charger1.5 hour charge timePlugs in directly to the SM-EW90 handlebar junction ACan also be used for completing firmware updates when linked to E-tube software on your PCSM-GM01 E-Tube Di2 GrommetE-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 installPack of 4Dura-Ace R9100 Road Brake Caliper SetThe 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 caliper’s and offer a linear braking curve for improved feel and function.Dura-Ace R9100 Road Brake Caliper Set Features:Mount Type: SLR EV Dual PivotThe best balance between rigidity, weight and stopping powerMore predictable, linear braking curveClear contact feeling with better linearityMore aerodynamic QR leverSleek designLess gap between each armBetter clearance with wider tyre (up to 28c)Weight: 326g (Pair)Dura-Ace R9100 CassetteShimano 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 loadClose ratio gearing allows a more efficient use of energy through finer cadence controlLargest sprockets are mounted on lightweight alloy and carbon carriers to reduce weight and increase rigidity5 largest sprockets are made from titanium to reduce weight without sacrificing strengthSprockets are extensively cut away and drilled to further reduce weight without reducing rigidityNickel-plated finish offers hard wearing resistance to corrosionAlloy cassette lock-ringWeight: 175g (11-25T), 193g (11-28T), 211g (11-30T), 189g (12-25T), 205g (12-28T)Dura Ace 11-speed Chain CN-9000 114 LinksThe 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 coatingSupplied with joining pinIncreased durability (vs. CN-7900)Weight: 243gPlease note that this groupset does not come supplied with outer cables.A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store. 
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As with many cyclists, be it mountain bikers, BMX riders or road cyclists we want to take the time to make sure we get the best products. Where cycling is a passion for many we often invest a lot of our time and money into the hobby. And as we know, getting the right products can give us that small competitive advantage either over our actual competitors, our mates or even just beating our own goals. But because we do invest so much in our bikes and our equipment it’s really important to buy from recognised retailers, in our most recent search, we found many products available online for ridiculously (almost laughable) prices. They were just so low that alarm bells should instantly be ringing. That’s why we only recommend buying from the retailers that you really know and trust, names like Wiggle, Chain Reaction and Evans Cycles are just some of those that we use regularly. With these retailers you know you’re in safe hands and can expect great service, great returns policies and if anything was to go wrong great customer service under a warranty claim.

But onto the reason you’re here today, let’s delve into some of the details of Shimano Dura-Ace R9150 Di2 11 Speed Groupset to help you understand a bit more about where it sits in the market against some of the many alternatives that are available out there. We’re very aware that by buying our cycling stuff online that we’ve missed out on the opportunity to actually see and test the product first. This is where reviews come in to their own, as it gives us that chance to hear from other like-minded cyclists about how good or bad a product is.

As you would expect, our first and top piece of advice before buying, is to read lots and lots of Shimano Dura-Ace R9150 Di2 11 Speed Groupset reviews. With a review score of 9.7 out of 10 it’s likely that there will be lots of great detailed reviews to help you. And if you find that actually the reviews are suggesting Shimano Dura-Ace R9150 Di2 11 Speed Groupset isn’t right for you then there will be tons and tons of other reviews for other products in the Groupsets category. In fact we’ve got 132 products reviewed in this category alone.

Something that makes it particularly challenging is the vast range of choice, as mentioned above there are 132 products in the Groupsets category. There are also 2311 products from the brand Shimano. And then getting into the specifics even more there are 40 products from Shimano in the category “Groupsets”.