SHIMANO ULTEGRA Di2 ST-R8050 2x11-SPEED STI DUAL CONTROL LEVERS - PAIR *

Product Code: 158163
£284.99 WAS £299.99 Save 5% GBP
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    Product Description

    With smaller, sleeker hoods, the 2 x 11-speed compatible Shimano Ultegra Di2 ST-R8050 STI units deliver improved ergonomics for better rider comfort and control, with reduced lever stroke and lighter action.

    The new Ultegra R8000 series is taking our rider-tuned philosophy to the next level, with an extensive range of components for mechanical shifting, electronic shifting (Di2) and time trial / triathlon.

    The new Di2 lever can operate with the recently released full or semi Synchronized Shifting function (with the BT-BN110 battery), giving riders the option to make automatic shifts from the front (full) or rear (semi) derailleurs. This means that you could set, for example, both left shifters to move up through the drivetrain and both right shifters to move down through the drivetrain. As well as this the shifters have more defined click feeling to offer quick and precise shifting with gloves. Following the design of the 'secret' Dura-Ace Di2 shifter buttons, the new Ultegra ST-R8070 hydraulic Di2 and ST-R8050 rim brake Di2 levers also include the top-of-the-hoods buttons for remote shifting, which can be programmed to shift gear or to control ancillary devices such as compatible computers or lights. All shift levers or buttons can also operate multi-shift which, like the top button and Synchronized Shift features, are customisable in the E-TUBE app for phones, tablets or PCs. The app not only allows you to customize functions and operations as you please, but also allows you to keep all units up-to-date with the latest firmware and run error checks to pinpoint and solve abnormalities.

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    * Prices are estimates and will be calculated at checkout based on your minimum deposit.
    Home Delivery by Experts

    All Terrain Cycles are now offering a Home Delivery service.

    Our Cytech qualified mechanics will first make sure that your bike is fully checked and ready to ride.

    Then we will deliver it completely assembled direct to your home or place of work where we will set up your bike for your personal needs and answer any questions you may have. All for just £50.00.

    Our delivery map indicates a general area, however, if you do not see your location on the map please call us on 01274 588488 to discuss a special delivery.

    Hometech Map
    HOW TO BUILD YOUR MAIL ORDER BIKE

    Aftercare

    After the first few weeks of use, the whole bike will settle down. As a result, the gears may need tweaking, some nuts and bolts may need tightening and you may well need to check the adjustment of the saddle and handlebars.

    CABLE STRETCH

    Gears

    Cable stretch tends to occur shortly after a new bike has been ridden a few times. A rear derailleur that we have tuned to hit every gear, nicely and quietly, may now not be making each shift causing a sensation and sound of “being in between gears”. Generally you may have to shift up, or shift down a couple times to quiet it down and settle the derailleur into a “happy gear”. A front derailleur may no longer want to shift all the way onto the big ring or will require a much firmer push to get it there.

    It is advisable to get the cable tension adjusted as soon as this happens either by your local bike shop. This tune up is considered a necessary part of any bicycles maintenance schedule and as such should not be ignored.
    Brakes

    Your brakes will also be affected by cable stretch (provided of course that they are NOT hydraulic in which case this does not apply). The symptom here is that they usually start to feel quite loose. i.e. you have to pull the lever much further back or harder in order to get the same stopping power you once had. This is partly why new bikes come with a first free service. If your brakes start feeling a little spongy after a few weeks, you can adjust them at the barrel or the clamp or ask a mechanic at your local bike shop to do it for you.
    DISC BRAKES

    New disc brakes won’t deliver their full power until the rotor and pads have bedded in.

    SRAM has a really good guide for bedding in disc brakes:

    “Accelerate the bike to a moderate speed and then firmly applying the brakes until you are at walking speed. Repeat this process 20 times. Then accelerate the bike to a faster speed and apply the brakes until you are at walking speed. Repeat this process ten times. It’s important that during this process you never come to a complete stop or lock up the wheels at any point.”

    Doing this process should drastically improve the performance of your brakes and prepare them for many happy rides.
    CRANKS

    Check the cranks and crank bolts or nut for tightness; grab a crank arm in each hand and try to wiggle them to check for looseness. If there is play in the cranks, the nuts or bolts may need to be tightened. Cranks should be checked after every ride for the first week.
    HEADSET

    A loose headset can be diagnosed by turning the front wheel to point left or right, holding the front brake on, and then rocking the bike backwards and forwards. Hold your fingers between the stem and the frame. Any movement indicates that you need to tighten the headset.
    SADDLE

    Check your seat post is not loose and that you have not exceeded the limit marked on the seat post. Once you have checked these, use an allen key to tighten the seat post clamp. Check the seat is secure by giving it another check once you have finished.
    STEM

    Check that your front wheel and stem do not move independently, and that your handlebar clamp bolts are tight. Perform this check by standing in front of the bike, holding the front wheel between your knees, and twisting the handlebars. You can prevent any movement by tightening the stem bolts and the handlebar clamp with an allen key.
    SUSPENSION FORKS

    Keeping your mountain bike’s suspension maintained is one of the best ways to ensure you’re getting all the performance you can out of your bike. Plus, giving your fork and shock a few seconds of attention here and there can prevent costly repairs or even replacements.

    Dirt is the number one enemy of suspension. After every ride make sure to wipe the seal area and stanchions of your fork and shock. Wipe in a horizontal motion, not vertical as you don’t want to force any debris towards the seals.

    Every few rides double check that your suspension sag is correct, as well as your rebound and compression adjustments. If something has changed, or the adjustments aren’t working as before, some maintenance is likely due.

    Working on your bike at home can seem daunting, and we'd always recommend you take your bike to a qualified mechanic if possible.

    FOR FURTHER ADVICE ON LOOKING AFTER YOUR NEW BIKE SEE OUR KNOWLEDGE CENTRE.

    knowledgecentre

    Mail Order

    One of our Cytech qualified mechanics will hand build your bike leaving only a few minor adjustments for you to do once your new bike arrives. Our mechanic will also complete a rigorous Pre-Delivery Inspection (PDI) before carefully re-packing for shipping to you; but in order to fit the bike back into its box for delivery, some disassembly has to be done. Re-assembly of these parts should be straightforward and should not take very long.

    Tools You'll Need (Not Provided)

    A multi-tool or a 4mm or 5mm Allen key, a pedal wrench or 15mm Allen key, depending on your pedals and a pair of scissors to open the box and cut the zip-ties with.
    1. Open the Box and Remove Your Bike

    Carefully remove your bike from the box and remove all of the packaging and zip ties with your scissors or snips. Never use a sharp knife as this can easily result in damage to paintwork and tyre sidewalls. Pedals and quick release (if supplied) will be in a small box at the bottom of your package as well as an instruction manual for your specific bike. Make sure you keep hold of this as it contains your bike's serial number.
    2. Secure Your Front Wheel

    Bikes will be delivered with the rear wheel already fitted so all you have to do is slide in the front wheel. First, remove the plastic fork spacer, along with any other packing material.

    Set the frame upright on the ground and attach the wheel. Make sure that the brake is properly aligned and that the wheel is sitting straight. Next, tighten the quick release skewer if supplied and make sure that the brake quick release is tightened.
    3. Attach the Handlebars

    Using a multi-tool or a 4 or 5mm Allen key, clamp the faceplate over the bars so that they are fastened securely but not so tight that you cannot change the angle of the bars. Note many models of handlebar have handy measurement markers, allowing you to find your perfect angle.
    4. Fit Your Pedals

    It is important to note that pedal threads are different from left side and right side. The right side pedal has a right-hand thread (removes anti-clockwise, installs clockwise). The left side pedal has a left-hand thread (removes clockwise, installs anti-clockwise). We will label the pedals with “left and right” stickers in order to make sure you refit them correctly. The pedals will have grease applied to the threads, do not wipe this off. Follow the direction arrows on the stickers to ensure the pedal threads engage correctly then tighten them with a 15mm pedal wrench or Allen key (where applicable).
    5. Fit Your Saddle

    The seatpost has already been greased so all you have to do is slide the post into the frame at your desired height and tighten the seat clamp using your multi-tool.
    6. Final Checks

    Finally give your bike a final check over to ensure your handlebars and seat post clamp are tightened securely, and also that your brakes' quick releases are in the closed position.

    Please also read our aftercare recommendations.

    FOR FURTHER ADVICE ON LOOKING AFTER YOUR NEW BIKE SEE OUR KNOWLEDGE CENTRE.

    knowledgecentre

    Questions and Answers

    There are currently no questions and answers for this product.

    Want to ask us a question about this product? Just fill in the form below and we will get back to you as soon as we can.

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    Availability

    Stock is held at our two stores and at an external warehouse, and as a consequence our website does not show live stock.

    Upon placing an online order we will notify you if we are unable to fulfil your order within 1-5 working days.

    We do not charge your credit or debit card until we dispatch your order, unless by prior agreement or as a holding deposit for special purchase items.

    Our mail Order Customer service is open Monday to Friday 8am to 5.30pm

    If you are visiting one of our stores and interested in a specific item, please ring us on 01274 588 488 to check that it is available at the store you are visiting before making a special trip.

    This telephone number is manned 7 days a week in line with our shop opening hours.

    Returns

    Goods must be returned within 30 days of receipt.

    Returned goods must be unused, in a saleable condition and in their original packaging with all labels still attached.

    Goods must not be fitted or used.

    All Goods must be accompanied with a Completed Returns Form.

    Goods can be returned to the Store for a refund or exchange. A Completed Returns form must accompany all goods returned to the store; the refund however will be processed by the Mail Order Customer Service Staff and not by the Store Staff so the refund may not be immediate.

    To read more about our delivery/returns please click here

    Specifications
    Features
    • With Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear
    • The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear shifts
    • Full and semi synchronized shifting programable, Synchro shift compatible meaning a single shifter can control both front and rear shifting which can be fully custom tuned to your riding preferences. Semi synchronized shifting means when a front shift is made the rear mech will automatically correct to the appropriate ratio
    • Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold
    • Drop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STI
    • Programmable function of top button remote switch for third party cycle computers
    • Brake lever pivot is positioned to be used with super SLR brake callipers, increase power providing excellent ergonomics when riding on the hoods
    • Finely tuneable reach adjusters for the levers enable custom fitment for all hands
    • Levers are supplied without electrical cables, as these need to be ordered separately to suit
    • For use with E-tube electric cables
    • Comes complete with SLR brake cable set
    Specification
    • Use: Road
    • Group: Ultegra Di2
    • Model: ST-R8050
    • Type: Dual-Control (STI)
    • Handlebar mounting: left/right
    • Gear front: 2-speed
    • Gear rear: 11-speed
    • Optical gear display: No
    • Lever reach adjust: Yes
    • Handlebar diameter: 23.8mm/24.2mm
    • Brake-type: SLR-EV
    • Compatible: EW-SD50
    • Master unit: No
    • Firmware update by E-tube Project: Yes
    • E-tube port (pcs): 4
    • E-tube connector (pcs): 0
    • Port for remote sprinter shifter (pcs): 2
    Material
    • Body: CFRP
    • Lever: Aluminum
    Colour
    • Grey
    Weight
    • 295g / pair
    Technologies

    SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEM

    The SEIS innovative shift technology is still based on the SHIMANO INDEX SYSTEM (SIS) that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics. This electronic shifting system has been extensively tested over past two years by several professional riders in all conditions possible, such as rain, mud, low temperatures, cobble stone roads and combinations of all of these at the same time. Shifting is executed by simply pressing the button. No power is needed to shift, which gives important advantages since it is easier now to always keep a tight grip on the handlebar and to keep your concentration on riding instead on shifting. The shift system allows accurate and effortless shifting in difficult circumstances like when you have cold hands or when you are completely exhausted. Furthermore, the shifting performance will never be affected by contaminated or stretched cables since the shifting signal is transferred electronically. The operating buttons work similarly to mechanical Dual Control Levers so you don’t need to re-program your mind for a new system.


    E-Tube

    E-Tube platform offers optimum flexibility on your bike. E-TUBE transmits interactive signals and power supply to each parts by “Plug & play” connection. E-TUBE is no rust, no stretch, no freeze and it ensures advanced low maintenance. And SM-PCE1 connects between PC and components to update firmware. Digital device stay the latest version with updating firmware for improve function.


    Synchro-Shift

    SHIMANO Synchronized Shift is a new feature introduced to Shimano´s electronic road groupsets, designed to simplify gear choice and reduce decision making in racing situations. When riding at maximum capacity, decision making can be impaired. The less stresses on a rider and the less decisions a rider has to make, the less mistakes they will make. Therefore SHIMANO Synchronized Shift is designed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur.

    Two SHIMANO Synchronized Shift modes will be available:

    • Full SHIMANO Synchronized Shift: the front derailleur reacts based on the rear derailleur’s shift action. This essentially means that, when activated, there is no need for two separate shifters to control front and rear derailleurs, the two buttons on one shifter will control both derailleurs.
    • Semi SHIMANO Synchronized Shift mode: the rear derailleur reacts based on the front derailleur’s shift action, shifting to the next most appropriate rear gear when the rider makes a front shift.

    SLR-EV 

    SLR-EV is brand new SLR with dual symmetric pivot brake caliper. The short-arm brake design employs two bearings and a roller to realize greater efficiency in the pivot area and deliver superior modulation and power for braking. Together with the BC-9000 brake cable, the new calipers deliver 36% more braking power than SHIMANO’s previous brake model. And we offer 2 axle symmetric brake caliper and fork mount and chain stay mount type.


     

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