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Ultra-Aero SL - Pro
Shimano Ultegra Di2

  1. £3,999
  2. Was £4,999
  3. Save £1,000
When being fast just isn’t fast enough! Faster in the wind tunnel and quicker on the road, the Ultra-Aero SL is designed to dominate, defeat the wind, and make your fastest rides even faster. In Pro specification, it's paired with Shimano's premium Ultegra Di2 electronic groupset, aerodynamic Mavic Cosmic S 42 carbon wheels, 28 mm Pirelli P-Zero Road tyres, and Selle Italia SLR Boost saddle. The integrated carbon cockpit completes this pro-level package.
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Product code: BULTSL8100D

...And Many Ways To Pay...

  • "Exceptionally fast"
    Cycling News
  • "Ribble's Ultra SL rewrites the aero rule book"
    Bike Radar
  • "Puts the Rider front & centre"
    Cycling Plus
DescriptionGroupsetWheelsetHandlebarsSaddleSizeGeometryFrequently Asked Questions

Description

When being fast just isn’t fast enough! Faster in the wind tunnel and quicker on the road, the Ultra-Aero SL is designed to dominate, defeat the wind, and make your fastest rides even faster. In Pro specification, it's paired with Shimano's premium Ultegra Di2 electronic groupset, aerodynamic Mavic Cosmic S 42 carbon wheels, 28 mm Pirelli P-Zero Road tyres, and Selle Italia SLR Boost saddle. The integrated carbon cockpit completes this pro-level package.

Groupset

Shimano Ultegra R8100 has been completely redesigned with all-new ergonomics, even greater brake modulation and wireless electronic shifting precision. It delivers the world’s fastest and most reliable wireless shifting and a wide gear range which means no matter how steep a climb is; it’s never outside your comfort zone. Di2 gives you instant, accurate, lightning-fast shifts every time at the push of a button. Even in the most extreme of conditions, shifting is precise and controlled. You can even change gear under heavy load while climbing or accelerating. With Di2, you are in complete control.

Groupset

Wheelset

Mavic Cosmic S 42 Carbon wheels are engineered for riders seeking the perfect balance between weight, aerodynamics, and speed. Their minimal drag and low inertia design allows you to accelerate and climb faster, while holding higher speeds for longer. 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 low.

Wheelset

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.

Handlebars

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 SLR Boost saddle. Bringing high performance, comfort, and support to any endurance ride or race event, the SLR's neutral shape allows complete freedom of movement without compromising pedalling efficiency or power output.

Saddle

Size

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.

Size

Geometry

SizeXSSMMDLGXL
Rider Height5'3" - 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)
Crank Length (mm)170170170172.5172.5
A - Seat Angle75.0°74°73.5°73.3°73.3°
B - Top Tube (mm)515535555576590
C - Head Angle72°73°73°73.5°73.5°
D - Offset (mm)5345454545
E - Head Tube (mm)105120140160180
F - BB Drop6969696969
RC - Chainstay (mm)410410410410410
FC - Front Centre (mm)518575585598613
Reach (mm)379385392401410
Stack (mm)506523545564583
WB - Wheelbase (mm)9819759859991014
G - Seat Tube C-Top (mm)470500520540560

Frequently Asked Questions

The T1000/T800 carbon frame weighs 1200 g, and the forks weigh 580 g, for a combined total weight of 1780 g (size medium). The complete build weights are Sport—8.65 kg, Enthusiast—8.60 kg, and Pro—8.50 kg.

Similarly to the SL R, the Ultra-Aero SL's construction features a bespoke blend of Toray T1000 and T800 carbon fibres. However, the SL R uses more T1000 fibre within its layup, making it slightly lighter (250g) and stiffer.

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.

No. The Ultra-Aero handlebars are exclusive to the Ultra-Aero SL R and are only currently available on that particular bike model.

The Ultra-Aero SL's bottom bracket shell is threaded 68 mm BSA, which makes maintenance easy and enhances reliability.

Cycling's governing body has approved the Ultra-Aero SL for competition in UCI-sanctioned events. However, the disc brake adaptor for the front forks must be replaced with the alternative version supplied with the bike. Failure to follow these guidelines will result in disqualification.

The upper and lower bearing dimensions are P16 40 x 52 x 7 mm 45 x 45° and ACB40 40 x 51.8 x 8 mm and 45 x 45°, respectively.

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.

The frame is aero-optimised around 28 mm tyres and can accommodate up to 32 mm (manufacturer dependant).

All standard bottle cages and bottles are compatible; the Ultra-Aero SL is optimised to be faster with a bottle and cage fitted than without.

Two. One is situated on the down tube and one on the seat tube.

The frame requires M12 x 125 mm x 1.5 and M12 x 173 mm x 1.5 front and rear thru axles.

Due to the Ultra-Aero SL being a speed-centric aero bike, the frame isn't designed to accept mudguards.

We recommend a maximum system weight of 120 kg (bike, rider & luggage).

Yes, you can. The carbon extensions bolt into the underside of the handlebars, using the two mounting points normally reserved for an out-front computer mount. Anyone wanting to mount a cycle or GPS computer can mount it to the extensions themselves.

Absolutely. However, the aerodynamic profile of the top portion of the handlebar makes it problematic to find compatible lights and computers. To overcome this, we've designed the handlebars to accept any compatible out-front computer mount, which bolts into the underside of the handlebars.

We do not supply pedals with our bikes due to the various systems people use. However, when configuring your bike, you can select from a range of our best-selling pedals.