Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.
Bianchi Oltre XR4 CV Dura-Ace Di2 Disc Road Bike 2022
With an ultra-modern design comprising state-of-the-art materials, the Bianchi Oltre XR4 CV Dura-Ace Di2 Disc Road Bike promotes a genuinely versatile performance that excels up mountain passes, within furious sprints and during solo breaks. The frameset is made from Countervail (CV) carbon that is unique to Bianchi. This carbon combines a special matrix that infuses a visoelastic material into its weave to markedly reduce road vibrations, increase lateral stiffness and reduce weight. The carbon is sculpted into aerodynamic tube sections to minimise aerodynamic drag, while generous clearance for wider tyres offers the opportunity for extra comfort and compliance.
A race-inspired geometry positions the rider perfectly for efficient power transfer, and internal routing keeps the brake hoses completely hidden from the wind. Vision 55 SC wheels feature full carbon, lightweight, 55mm deep aero sculpted rims to guarantee reactivity and consistent momentum. Gear changes are enlisted by the range-topping Shimano Dura-Ace R9200 12-speed setup that shifts flawlessly via its semi-wireless configuration.
Stopping duties are charged to the hydraulic disc brakes, also of the Dura-Ace marque, that perform with precision and power whatever the conditions. The build is completed with the one-piece Vision Metron 5D ACR handlebar and stem combination that affords excellent stiffness during out-of-the-saddle efforts.
Highlights
- A versatile road bike brimming with speed and efficiency to excel on climbs, in sprints and during breakaways
- The frame is made from Countervail (CV) carbon that combines viscoelastic material together with a special carbon fibre layup
- CV carbon helps to dissipate vibrations, increase lateral stiffness and decrease weight
- Aerodynamic frame tube sections markedly reduce drag
- Generous clearance for modern, wider tyres
- Internal cable and brake hose routing further lowers drag and give a clean aesthetic
- Vision 55 SC wheels feature deep carbon rims to guarantee speed and responsiveness
- The semi-wireless Shimano Dura-Ace R9200 12-speed gears grant smooth and reliable shifting
- Hydraulic disc brakes afford power and control in all weather conditions
- The Vision Metron 5D ACR integrated handlebar and stem is stiff and aerodynamic
- Please note: the images may differ from the specifications listed. The bike will be supplied as per the technical specifications list
Technical Specification
| Frame | Bianchi Oltre XR4 carbon with Bianchi CV, mechanical/electronic shifting compatible, headset 1.5", PressFit 86.5x41mm BB, disc brake internal cable routing, flat mount calipers, thru-axle 12x142mm |
| Fork | Bianchi full carbon with Bianchi CV disc, 1.5" integrated head, disc brake internal cable routing, flat mount caliper, thru-axle 12x100mm |
| Headset | FSA Orbit with UD carbon custom Metron 5D ACR compatible top cap |
| Bottom Bracket | Shimano SM-BB92-41B PressFit |
| Integrated Handlebar and Stem | Vision Metron Reparto Corse 5D ACR Disc, full UD Weave Carbon, drop 125mm, reach 80mm, Di2 compatible, Sizing - 100x400mm (47/50cm bikes), 110x420mm (53/55cm bikes), 120x420mm (57/59cm bikes), 130x440mm (61cm bikes) |
| Bar Tape | Bianchi black soft microfiber with shockproof Eva-139 |
| Front Brake | Shimano Dura-Ace R9270 hydraulic disc brake caliper with Shimano SM-MT900 Center Lock 160mm rotor |
| Rear Brake | Shimano Dura-Ace R9270 hydraulic disc brake caliper with Shimano SM-MT900 Center Lock 160mm rotor |
| Brake Levers | Shimano Dura-Ace ST-R9270 hydraulic disc |
| Front Derailleur | Shimano Dura-Ace Di2 FD-R9250 12-speed |
| Rear Derailleur | Shimano Dura-Ace Di2 RD-R9250 12-speed |
| Shift Levers | Shimano Dura-Ace Di2 ST-R9270 12-speed, hydraulic disc brake |
| Chain | Shimano CN-M9100 12-speed |
| Cassette | Shimano Dura-Ace CS-R9200 12-speed , 11-30T |
| Crankset | Shimano Dura-Ace FC-R9200, Hollowtech II, 50x34T, Crank Length - 170mm (47/53cm bikes), 172.5mm (55/59cm bikes), 175mm (61cm bikes) |
| Front Wheel | Vision 55 SC, full carbon 55mm deep rim, tubeless-ready, Center Lock, x 24 spokes |
| Rear Wheel | Vision 55 SC, full carbon 55mm deep rim, tubeless-ready, Center Lock, x 24 spokes |
| Front Tyre | Pirelli P ZERO Race , 26-622, 127TPI, aramid breaker, clincher |
| Rear Tyre | Pirelli P ZERO Race , 26-622, 127TPI, aramid breaker, clincher |
| Saddle | Fizik Argo Vento R1, nylon carbon reinforced shell with WingFlex, carbon braided 7x10mm rail, 260x140mm |
| Seatpost | Bianchi Reparto Corse Full Carbon Aero with an adjustable alloy head for +/- 35mm of positional changes. Length |
| Pedals | Available to be purchased separately |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
Unable to display Reviews due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Unable to display Q&A due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".