Ultra-Aero SL 105 Di2
Ways to pay
Why Ribble?
BUILT TO ORDER
Every Ribble is built to order by our skilled mechanics in Lancashire, UK.
LIFETIME FRAME WARRANTY
Ride hard, worry free – all our bikes have a lifetime frame and fork warranty.
30-DAY RIDE-OUT GUARANTEE
Make sure you get the perfect fit - if you're not 100% happy, return it for a full refund or swap. Terms and conditions.
30 DAYS FREE BIKE INSURANCE
Every new Ribble comes with 30 days cover included, so you’re protected from day one.
BUY DIRECT
Get more bike for your money, and have our expert team on hand if you need support.
"Exceptionally fast"
Cycling News "Ribble's Ultra SL rewrites the aero rule book"
Bike Radar "Puts the Rider front & centre"
Cycling Plus
Description
When being fast just isn’t fast enough, the ULTRA-AERO SL steps up. Faster in the wind tunnel and quicker on the road, it’s built to cut through the air and turn every ride into a chance to push the pace. It pairs the crisp electronic shifts of Shimano's 105 Di2 groupset with lightweight and dynamic Mavic Ksyrium 30 alloy wheels, grippy Pirelli P Zero Road tyres, and unisex Selle Italia Model X Superflow saddle for balanced speed and comfort. The integrated aerodynamic carbon cockpit completes this race-ready package.
Groupset
Shimano 105 Di2 is the culmination of years of research and development. By combining technologies and functions inherited from Dura-Ace and Ultegra, 105 Di2 will transform your cycling experience. With a shared Di2 platform, sophisticated ergonomics, 105-optimised gear combinations and the exceptional stopping power of hydraulic disc brakes, Shimano 105 Di2 marks a new era of affordable performance. Di2 gives you the instant, lightning-fast gear shifts of the world’s fastest wireless groupset. At the push of a button – every time. Di2 is full of infinite possibilities. It allows you to embrace the freedom of the open road - and go deeper into the new day.
Wheelset
Ksyrium 30 Disc is the perfect entry point into high-level race performance. This tubeless-compatible wheelset's dynamic ride quality helps you roll faster and smoother while retaining a lightweight feel for climbing and accelerating. Paired with Pirelli P Zero road tyres, which balance performance with durability, for both reliability and grip. The carcass features excellent puncture resistance while keeping weight impressively low.
Handlebars
The Ribble RI-2 carbon integrated handlebar is a proprietary system that conceals every cable while providing optimal fit, adjustability, and seamless integration. This one-piece cockpit exemplifies the perfect marriage of form and function, combining a clean, cable-free aesthetic with advanced aerodynamics to reduce drag by up to 40% compared to a conventional handlebar setup. With a super-stiff carbon monocoque construction and refined ergonomics, the RI-2 system is designed for speed-conscious road riders who prioritise performance and all-day comfort.
* Image for illustrative purposes only. The RI-2 replaces the LEVEL 5 handlebar and features updated graphics and a revised aesthetic.
Saddle
The ULTRA-AERO seat post features a truncated aerofoil profile that's aerodynamically optimised to reduce drag in the high-speed airflow disturbed by the rider's leg. A composite shaft absorbs road shocks for a vibration-smoothing ride quality further enhanced by a Selle Italia Model X saddle. Designed with sustainability in mind but without compromising performance, Model X features a glue-less assembly; with gel padding and a superflow cut-out for all-day ride comfort.
To assist you in selecting the correct size, simply find your height on the graphic. It illustrates our recommendations so you can be confident that the size you order will be correct. If you find that your height is between sizes, we recommend you opt for the smaller size.
For more information on why choosing the right bike size is important, please visit our Bike Sizing page, or learn more about Bike Fitting.
5'3 - 5'5
160 - 165cm
5'5 - 5'7
165 - 170cm
5'7 - 5'10
170 - 178cm
5'10 - 6'1
178 - 185cm
6'1 - 6'3
185 - 191cm
Full Spec
Please note that the exact specification below will differ based on the size and specification you select.
Bike
- BBR60 68mm Bottom Bracket
- BTDN3001 Di2 Battery 3-Port
- CN-M7100 SLX 12spd Chain 126 Links
- CS-HG710 12spd Cassette HG 11-36T
- Chainstay Protector
- Di2 12 Speed Battery Bung 2PCS
- Disc Brake Adapter Rear 160mm Flat to Flat
- EW-EC300 Di2 Charging Cable 1700mm USB
- EW-SD300 1400mm Di2 Wire
- EW-SD300 850mm Di2 Wire
- EW-SD300 Ultegra Di2 2mm Frame Bung
- Embossed Black Bar Tape
- FC-R7100 105 12spd Chainset 165mm 50-34T
- FD-R7150 105 Di2 12spd Front Derailleur Braze-On
- RD-R7150 105 Di2 12spd Rear Derailleur
- RT-CL700 SI Rotor with Lockring 160mm
- ST-R7170 105 STI Lever & BR-R7170 Caliper 12spd RH
- ST-R7170 105 STI Lever & BR-R7170 Caliper 2X LH
- Ultra-Aero SL Disc Fork
- Ultra-Aero SL Disc Frame Blue XSM 47cm
- Ultra-Aero SL R/SL Front Thru Axle
- Ultra-Aero SL R/SL Rear Thru Axle
- Ultra-Aero SL R/SL Setback Carbon Seatpost - 380mm
- Warning sticker sheet Torques to be applied at PDI
Wheelset
- Inner Tube 700X25/32 LV60mm
- Ksyrium 30 Disc Front Wheel 700c CL
- Ksyrium 30 Disc Rear Wheel 700c CL HG
- P Zero Road TLR Tyre Black 700x28mm
Handlebar
- Expander For Carb Steerer 1-1/8 x 65mm (Regular)
- M5 20mm Hex 4 Tapered Head P0.8 W/Washer Black
- RI-2 Carbon Integrated Bar & Stem 38cm x 80mm
- RI-2 Split Stem Spacer 10mm
- RI-2 Split Stem Spacer 5mm
- Ultra-Aero Bearing Cover for RI-2 Bar
Saddle
- Model X Superflow Saddle
Frequently Asked Questions
If you're between sizes, we usually recommend going smaller. It's easier to tweak the fit with a longer stem or more seat post, while a bigger frame gives you less room to adjust.
Build weights are provided for a medium‑sized frame and are intended solely as general guidance. Actual weight will vary based on the selected components and accessories, as well as standard manufacturing tolerances. These figures do not constitute a guarantee or warranty of final product weight, and we may occasionally make minor modifications to specifications without prior notice.
- 105 build: 9.3 kg
- 105 Di2 build: 9.5 kg
- Ultegra Di2 build: 8.9 kg
- Frame only (medium): 1200 g
We offer a lifetime warranty on all Ribble frames and forks for the original purchaser. This covers any manufacturing defects in materials or workmanship so you can ride with complete confidence. The standard manufacturer's warranty covers all other components.
The ULTRA-AERO SL frameset is approved for use in UCI-sanctioned events. To comply with regulations, the supplied front fork disc brake adaptor must be swapped for the UCI-approved version included with the bike. Failure to make this change may result in disqualification when competing under UCI rules.
Both use a bespoke blend of T1000 and T800 carbon fibres, but the SL R features more T1000 in its layup. This reduces weight slightly while maintaining the same stiffness, strength, and durability.
No. The ULTRA-AERO handlebars are exclusive to the ULTRA-AERO SL R and are only available as part of this bike.
Yes. While the aero profile can limit compatibility, the bars are designed to work with standard out-front computer mounts, which fit neatly underneath.
Yes. The extensions will bolt into the underside of any Ribble RI-2 or LEVEL 5 carbon-integrated handlebars via the mounting points used for an out-front computer mount. A computer or GPS unit can then be mounted to the extensions.
Yes. The Ribble RI-2 integrated carbon handlebars, in combination with the frameset, enable all the cables to be fully hidden, preserving the Ultra's super sleek lines for maximum drag savings.
No. As a speed-focused aero bike, the frame doesn’t feature integrated mudguard mounts.
The ULTRA-AERO SL uses a 68 mm BSA threaded bottom bracket shell, allowing for ease of maintenance and enhanced reliability.
The upper and lower bearings are P16 x 40 x 52 x 7 mm 45 x 45° and ACB 40 x 51.8 x 8 mm 45 x 45°, respectively.
The frame is optimised around 28 mm tyres and can fit up to 32 mm, depending on the tread profile and manufacturer.
The ULTRA-AERO SL features two bottle cage mounts, with one on the seat tube and one on the downtube. Both are positioned to work seamlessly with Ribble Aero Bottle Cages for optimal aerodynamic performance.
The ULTRA-AERO SL uses a proprietary seatpost, available in inline or setback options and two lengths, making it easy to dial in the right fit across different frame sizes.
Thru Axles:
- Front: M12 x 1.5 x 125 mm
- Rear: M12 x 1.5 mm x 173 mm
The ULTRA-AERO SL uses this derailleur hanger.
We recommend a maximum system weight of 120 kg (bike, rider & luggage).
No. Pedals aren’t included as riders use different systems. You can, however, choose from a range of best-selling pedals when configuring your bike.
Ultra-Aero SL 105 Di2
Ways to pay
Why Ribble?
BUILT TO ORDER
Every Ribble is built to order by our skilled mechanics in Lancashire, UK.
LIFETIME FRAME WARRANTY
Ride hard, worry free – all our bikes have a lifetime frame and fork warranty.
30-DAY RIDE-OUT GUARANTEE
Make sure you get the perfect fit - if you're not 100% happy, return it for a full refund or swap. Terms and conditions.
30 DAYS FREE BIKE INSURANCE
Every new Ribble comes with 30 days cover included, so you’re protected from day one.
BUY DIRECT
Get more bike for your money, and have our expert team on hand if you need support.