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Ultra-Aero SL 105 Mechanical
Ultra-Aero SL 105 Mechanical image 2
Ultra-Aero SL 105 Mechanical image 3

Ultra-Aero SL105 Mechanical

Built to order in the UK
The ULTRA-AERO SL is built for pure aerodynamic performance. This build pairs Shimano 105 mechanical shifting with Mavic Ksyrium 30 alloy wheels, Vittoria Rubino tyres and a fully integrated carbon cockpit, delivering the efficiency, control and aerodynamic advantage for riders chasing their next level of performance.
£2,299
Was £2,849Save £550
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Product code: BULTSLV27100D

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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-Aero SL rewrites the aero rule book"
    Bike Radar
  • "Puts the Rider front & centre"
    Cycling Plus
DescriptionFramesetGroupsetWheelsetHandlebarsSaddleFrequently Asked Questions

Description

The ULTRA-AERO SL is built for riders who want pure aerodynamic performance without compromise. Every tube profile, surface and detail is shaped to reduce drag and help you carry speed more efficiently. This performance-focused build pairs the advanced ULTRA-AERO carbon frameset with Shimano 105 mechanical shifting, Mavic Ksyrium 30 alloy wheels, Vittoria Rubino tyres and the integrated carbon cockpit for responsive handling and confident control. A Selle Italia Model X Lite saddle completes a build designed to keep you riding faster for longer.

Frameset

The ULTRA-AERO SL carries the same wind‑tunnel‑proven profile as the SL R, tuned through a performance carbon layup that delivers high stiffness with real‑world durability. Every surface and edge is sculpted to reduce drag and channel airflow cleanly around rider and frame. The result is a bike that feels fast from the first pedal stroke and holds its line with composure when the pace accelerates. The frameset is approved for UCI-sanctioned events, so you can race it as hard as you ride it.

Frameset

Groupset

Shimano 105 delivers the proven reliability riders trust with the precision and smoothness that define modern electronic shifting. Its 12‑speed drivetrain offers the range to power up climbs and maintain momentum on fast, open roads. Hydraulic disc brakes provide consistent control and reassuring braking in every condition. Together they create a groupset that rewards every kind of rider, from first-season enthusiasts to experienced club regulars pushing for their next personal best.

Groupset

Wheelset

Mavic Ksyrium 30 wheels deliver responsive performance and dependable handling for riders looking to unlock the benefits of an aerodynamic road bike. Lightweight and tubeless-ready, they are quick to accelerate and help you hold your speed across a wide range of road conditions. Paired with Vittoria Rubino 30 mm tyres, they give you a smooth, reliable ride that balances grip and comfort, from training rides to race day.

Wheelset

Handlebars

The RI-2 integrated cockpit blends airflow and rider position into one seamless design. Hidden cables and a compact interface keep the front end sleek, while the flat top section gives your hands a comfortable place to rest on long rides. The bar’s shaping promotes an efficient riding stance and confident control when driving hard on fast, open roads.

Handlebars

Saddle

Fast is only fun if you can stay comfortable. The ULTRA-AERO carbon seatpost adds a touch of compliance to filter road buzz and reduce fatigue, keeping the ride smooth when the miles build up. Its aero profile flows seamlessly into the frame to preserve the bike’s speed advantage. The Selle Italia Model X Lite saddle provides firm, reliable support for hard efforts and longer rides so you can stay focused on maintaining performance without sacrificing comfort.

Saddle

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.

  • Frameset

    • Ribble Ultra-Aero SL Disc Fork
    • Ribble Ultra-Aero SL Disc Frame Blue XSM 47cm
    • Ribble Ultra-Aero SL R/SL Setback Carbon Seatpost - 380mm

  • Groupset

    • Shimano BBR60 68mm Bottom Bracket
    • Shimano CN-M7100 SLX 12spd Chain 126 Links
    • Shimano CS-HG710 12spd Cassette HG 11-36T
    • Shimano Disc Brake Adapter Rear 160mm Flat to Flat
    • Shimano FD-R7100 105 12spd Front Derailleur Braze On
    • Shimano RD-R7100 105 12spd Rear Derailleur
    • Shimano RT-CL700 SI Rotor with Lockring 160mm
    • Shimano ST-R7120 105 STI Lever & BR-R7170 Caliper 12spd RH
    • Shimano ST-R7120 105 STI Lever & BR-R7170 Caliper 2X LH

  • Wheelset

    • Mavic Ksyrium 30 Disc Front Wheel 700c CL
    • Mavic Ksyrium 30 Disc Rear Wheel 700c CL HG
    • Schwalbe Inner Tube SV17 700x28/47 Presta 60mm
    • Vittoria Rubino V TLR G2.0 Black 700x30mm

  • Handlebar

    • Level Embossed Black Bar Tape
    • Ribble RI-2 Carbon Integrated Bar & Stem 38cm x 80mm

  • Saddle

    • Selle Italia Model X Light 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.

  • Shimano 105 build: 9.4 kg
  • Shimano 105 Di2 build: 9.5 kg
  • Shimano Ultegra Di2 build: 8.4 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 a higher proportion of T1000 in its layup. This makes the SL R marginally lighter and stiffer while retaining the same stiffness, strength, and durability.

Yes, enhanced cable integration offers a neat, cable-free appearance by keeping cables hidden, shielded from wind, and protected against the elements.

No, the handlebars can't be raised after the bike has been built, as the steerer tube is trimmed to the correct length during assembly. However, we include 30 mm of spacers, so you can lower the bars if needed; raising them further won't be possible.

The frame is optimised around 28 mm tyres and can fit up to 32 mm, depending on the tread profile and manufacturer.

No. Ribble bikes are supplied with inner tubes installed as standard, even when fitted with tubeless-ready wheels and tyres.

If you'd like to run a tubeless setup, the conversion must be carried out after delivery. This typically requires tubeless valves, sealant and, in some cases, tubeless rim tape depending on the wheel specification. We recommend following the wheel and tyre manufacturer's instructions when converting to tubeless.

This approach gives riders the flexibility to choose the setup that best suits their riding preferences and maintenance requirements.

No. As a speed-focused aero bike, the frame doesn’t feature integrated mudguard mounts.

The ULTRA-AERO SL accommodates a 68 mm BSA bottom bracket, enabling easy 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 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:

The ULTRA-AERO SL uses this derailleur hanger.

Yes, the ULTRA one-piece carbon cockpit is now available to order for this bike. Simply add it to your build in the bike configurator.

Yes. While the aero profile can limit compatibility, the bars are designed to work with various out-front computer mounts, including the LEVEL Out-Front mount or LEVEL Out-Front Mount with GoPro attachment, which fit neatly underneath.

Yes. The extensions will bolt to the underside of any Ribble RI-2, ULTRA, 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.

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.