Ultra SL R - Enthusiast
Shimano Ultegra Di2

  1. £5,999
Sometimes being fast simply isn’t fast enough. In the pursuit of speed, the Ultra SL R equipped with the wireless precision of Shimano’s latest Di2 transmission has no equal and delivers a competitive advantage in every situation.
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Product code: BULTSLR8100D

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  • "A trailblazer as a pure aero bike that is focused solely on speed"
    Rouleur
  • "An exceptionally fast and focused aero road bike"
    BikeRadar
DescriptionGroupsetWheelsetHandlebarsSaddleSizeGeometryFrequently Asked Questions

Description

The Ultra SL R is the result of doing something that has never been done before. It guarantees gains never seen on a road bike; it's aerodynamically optimised to make your fastest rides even faster. This carefully considered build is designed to provide you with a significant competitive advantage. It introduces you to the wireless shifting precision of Shimano's latest Ultegra Di2 R8100 series drivetrain, lightweight and aerodynamic Mavic Cosmic SL 65 carbon wheels paired with fast and puncture-resistant Pirelli P-Zero road tyres and a ground-breaking Ultra Aero carbon integrated handlebar-that shakes the very foundations of design, performance, and aerodynamic integration.

Groupset

Shimano Ultegra R8100 has been completely redesigned with all-new ergonomics, even greater brake modulation and the sheer precision of wireless electronic shifting. 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

Wind tunnel perfected to reduce inertia and maximise your watt output; Cosmic SL 65 offers solo breakaway artists, sturdy sprinters, and triathletes a wind-carving, progressive aerodynamic wheelset for fast, flat road races or windy triathlons. The 65mm deep and 19mm wide NACA rim profile helps to reduce drag, resulting in faster acceleration and enhanced crosswind stability. Paired with Pirelli P Zero road tyres, which balance performance with durability, for both reliability and comfort. The carcass features excellent puncture resistance, whilst coming in at an impressively low weight.

Wheelset

Handlebars

Developed specifically for the Ultra SL R, the Ultra Aero bars feature a patent-pending design that represents the next level in aerodynamic integration. The innovative wake generating concept disrupts the airflow, creating a wake for the rider's legs to sit within and manipulating vortexes around the rider to further enhance airflow. An aggressive looking and drag-defying anatomic wing top section further accentuates the bars aero credentials. It’s not all about the aero, however, with all-day ride comfort also at the forefront of design. The flat-top section also providing a comfortable hand position for climbing, whilst ergonomically optimised drops conform to the natural curvature of the rider’s palm and feature a textured finish that doesn't require bar tape.

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 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)
Wheel Size700c700c700c700c700c
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 - Seattube C-Top (mm)470500520540560

Frequently Asked Questions

Builds start from just 7.8kg, with the Sport weighing approximately 8.25 kg and the Enthusiast 7.8kg.

Similarly to the SL, the Ultra SL R's construction features a bespoke blend of T1000 and T800 carbon fibres. However, the SL R features more T1000 fibre within its layup, allowing for a slight weight reduction without compromising its strength, stiffness, or structural integrity.

The frame is guaranteed against manufacturing defects for a period of 3 years. The standard manufacturer's warranty covers all other components.

We've developed a set of carbon extensions that bolt into the underside of the handlebars, using the two holes that would normally be reserved for an out-front computer mount. If you wish to fit a bike/GPS computer, you can attach the computer directly to the central section of the extensions.

The Ultra SL R has a 68mm BSA threaded bottom bracket shell, allowing for ease of maintenance and enhanced reliability.

Cycling's governing body has approved the Ultra SL R to compete in UCI-sanctioned events and achieved a medal at the Commonwealth Games. However, the disc brake adaptor for the front forks must be swapped out for the alternative version supplied with the bike. Failure to follow these guidelines when competing in events carried out under UCI regulations is liable to result in disqualification.

Yes. The Ultra SL R carbon integrated handlebars, in combination with the frameset, enable all the cables to be entirely hidden, preserving the super sleek lines of the Ultra for maximum drag savings.

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

All standard bottle cages and bottles are compatible; the Ultra SL is actually 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 M12x125mmx1.5 and M12x173mmx1.5 front and rear thru-axles.

Due to the Ultra SL R being a speed-centric aero bike, there aren't any integrated mudguard mounts.

We recommend a maximum rider plus bike weight of 120kgs.

Yes you can. The carbon extensions bolt into the underside of the handlebars, making use of the 2 mounting points that would normally be reserved for an out-front computer mount. Anyone wanting to mount a cycle or GPS computer can simply mount it to the extensions themselves.

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

Due to the many different systems people use, we don't supply pedals with bikes. However, you can choose from a selection of the best-selling pedals when you configure your bike.