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Ultra-Race 105 Di2

  1. £3,699
No matter when you strike—on a brutal climb, in a breakaway, or down a technical descent—the UCI-approved Ultra-Race is ready. This uncompromising race bike features Shimano 105 Di2, Ksyrium 30 wheels, Pirelli P-Zero tyres, and a unisex Selle Italia Model X saddle, all tied together by a sleek one-piece carbon cockpit for peak performance.
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Product code: BRCSLR7150D

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Description

It doesn’t matter when you launch your attack. On a brutal climb, amidst the chaos of a breakaway, or carving through tight corners on a blistering descent, the UCI-approved ULTRA-RACE is built to deliver in every race situation. The featherlight 775g frame is constructed from next-generation MT65 carbon with zonal deployment for maximised stiffness and power transfer where it counts. This uncompromising race machine pairs the precision of Shimano’s 105 Di2 electronic groupset with lightweight Ksyrium 30 wheels, Pirelli P-Zero tyres for race-ready grip, and a unisex Selle Italia Model X saddle. A sleek, one-piece carbon cockpit adds aero efficiency where it counts most.

Groupset

Combining technologies and functions inherited from Dura-Ace, 105 Di2 will transform your cycling experience. With a shared Di2 platform, sophisticated ergonomics, 105-optimised gear ratios and the exceptional stopping power of hydraulic disc brakes, 105 Di2 marks a new era of affordable performance. Di2 gives you the instant and lightning-fast gear shifts of the world’s fastest semi-wireless groupset. With Di2 you are in complete control.

Groupset

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 comfort. The carcass features excellent puncture resistance, whilst coming in at an impressively low weight.

Wheelset

Handlebars

Precision-engineered from high-grade carbon, the Ribble Aero integrated handlebars deliver race-ready stiffness with a streamlined aero profile that reduces drag and boosts efficiency. Contemporary styling meets performance with ergonomic shaping for all-day comfort and fully integrated cable routing for a clean, modern, cable-free finish.

Handlebars

Saddle

A narrow D-shaped carbon seatpost adds targeted flex to absorb 'road buzz', smoothing out rough surfaces and keeping you fresher for longer. It’s paired with the unisex Selle Italia Model X saddle—designed for both sustainability and performance. Featuring a glue-less assembly, gel padding, and a Superflow cutout, the Model X delivers all-day comfort without compromise.

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

SizeXXSXSSMMDLGXL
Rider Height4'11 - 5'3 (149 - 161cm)5'3 - 5'7 (159 - 169cm)5'6 - 5'8 (168 - 173cm)5'8 - 5'10 (172 - 178cm)5'10 - 6'0 (177 - 183cm)6'0 - 6'6 (182 - 197)
Crank Length165165170170172.5172.5
A - Seat Angle75°74.5°74°73.5°73.3°73°
B - Top Tube (Horizontal)505520535550570585
C - Head Angle71°71°72°72.5°73°73.3°
D - Fork Offset (Rake)555545454545
E - Head Tube110115130150170190
F - BB Drop686868686868
G - Seat Tube (C/Top)420470500520540560
FC - Front Centre582593584591603612
RC - Chainstay Length410410410410410410
Reach370379383388399404
Stack504509530551571591
WB - Wheelbase98399398599110041012

FAQs

If you're between sizes, we generally recommend choosing the smaller option. It's easier to fine-tune the fit of a smaller frame by raising the seat post or using a longer stem, whereas a larger frame leaves much less room for adjustment.

Complete build weights, based on a white frame in a medium size, are: Dura-Ace Di2 (7.0kg), SRAM Red AXS (7.0kg), Ultegra Di2 (7.7kg), 105 Di2 (8.3kg).

A SRAM Red AXS build with Scope Artech wheels and medium frame weighs 6.58kg.

Frame only weight is 775g based on a medium size.

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.

Yes, the ULTRA-RACE has received accreditation to be race-legal for UCI-sanctioned events.

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

The ULTRA-RACE is equipped with fast, durable, and grippy 30mm road tyres and can accommodate up to 32mm tyres.

No, the ULTRA-RACE is designed as a pure racing bike. If you want pannier rack compatibility, please check out the Allroad collection.

No, The ULTRA-RACE is not designed to accept full coverage mudguards.

The ULTRA-RACE features two bottle mounts on the seat and down tubes. It is designed to be faster with bottles fitted than without. Pair it with Ribble Aero downtube and seat tube bottle cages to maximise aero gains.

Yes, we recommend a maximum system weight of 120kg (bike, rider & luggage)

It's designed to accept a 68mm BSA threaded bottom bracket.

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 20mm of spacers, so you can lower the bars if needed—but raising them further won't be possible.

No, the ULTRA-RACE is supplied with a proprietary D-shaped carbon seat post, making it incompatible with third-party brands.

The frame is designed to accept the latest flat mount disc brakes.

The frame uses M12 x 123 mm x 1.5 mm front and M12 x 169 mm x 1.5 mm rear thru-axles.

No, our bikes don't have pedals as standard to accommodate the wide range of pedal and shoe preferences. However, you can easily add your preferred option from our best-selling pedal selection during the bike configuration process.