Summer’s flying by, and Balfe’s Bikes are marking the halfway point with a head-turning midseason sale. Whether you’re eyeing up your next carbon race bike or just want a new pair of shoes that won’t crush your toes after 30 miles, there are big savings on offer — including £1,000 off bikes from Specialized, Giant and Trek, 45 per cent off Shimano Ultegra Di2, half price Bontrager shoes, and some standout deals on Castelli’s jerseys and bib shorts.
We’ve rounded up twelve of the best below, including high-end helmets, carbon wheels, a compact electric pump, and performance kit for both men and women. These deals are live now, and if past sales are anything to go by, they won’t hang around for too long…
Castelli Espresso Bib Shorts — £35 off your new go-to shorts
These are bib shorts you’ll reach for every single ride. The Espresso Doppio fabric is soft, supportive and just stretchy enough, while Castelli’s premium Progetto X² seat pad brings comfort levels that make even century rides bearable.
They’re thoughtfully designed too: rear gel pocket, mesh bib straps, reflective tabs and raw-cut leg endings that stay smooth all day.
Get the Castelli Espresso Bib Shorts for £140 (was £175)
Women’s version also available
Race-ready without the squeeze: 28% off on Castelli Espresso Jersey
Built from Castelli’s Air_O stretch fabric, this jersey offers an aero fit without feeling restrictive. Raw-cut sleeves and a smooth, studded elastic hem keep it streamlined, while three roomy rear pockets and a zipped valuables pocket make it practical for big rides.
It’s lightweight, breathable and temperature-rated for 18–35°C — ideal for peak summer riding.
Pick up the Espresso Jersey for £90 (was £125)
Trek Madone SL 6 Gen 8 Di2 now available for £3,299, down from £4,250
Trek’s latest Madone SL 6 Gen 8 brings together aerodynamic shaping, electronic shifting and lightweight carbon into a more accessible race platform. The 500 Series OCLV carbon frame uses IsoFlow seat tube tech to improve comfort without giving up stiffness, and it’s paired with internal cable routing and carbon Bontrager Aeolus Elite 35 wheels.
Shimano 105 Di2 keeps shifting clean and reliable. This is a proper race bike with tech lifted from the top-tier SLR, but at a much sharper price.
Buy it now and save nearly a grand
The Abus Gamechanger 2.0: aero, MIPS-equipped and now £61 off
The Gamechanger 2.0 steps things up with its Aero Blade structure, optimising airflow across all wind angles. Add in the AirBoost inlet and internal channelling, and you’ve got a fast helmet that stays surprisingly cool.
It also comes with Abus’ MIPS Air Node tech and ActiCage shell reinforcement for added crash protection, plus ponytail compatibility and an integrated glasses dock.
It’s now available at Balfe’s for £199, discounted from the original £260 price tag.
Check out the Gamechanger 2.0 in Flip Flop Purple
POC Octal MIPS Helmet available for £161, down from £190
Famous for its big vents and pared-back design, the POC Octal now comes with added MIPS protection and a lightweight shell with reinforced structure. It’s cool, comfy and designed with long-distance riding in mind.
You also get a tidy fit system, built-in sunglasses dock and moulded straps. It’s simple, effective and cool enough for the longest summer rides.
Grab the Octal helmet at a 15% discount
20% off this women’s all-rounder road bike: Liv Langma Advanced 1
This women’s road bike is made for alpine climbs, fast sprints and big all-day efforts. The latest version gets improved aero shaping, an internal cable design and a reworked frame layout that clears 33mm tyres without compromising geometry.
The flared handlebar and integrated cockpit offer added control, while the carbon frame keeps the ride light and fast.
Get the Liv Langma Advanced 1 for £2,549 (was £3,199)
Half price Bontrager Circuit Road Shoes — now just £60
With one Boa dial and a hook-and-loop toe strap, these shoes offer a snug, micro-adjustable fit — ideal if you’re spending hours in the saddle. The nylon sole scores 7/14 on Bontrager’s stiffness index, balancing efficient power transfer with long-ride comfort.
They’re compatible with 2- and 3-bolt cleats, and due to the shape, Bontrager recommends sizing up. This great deal is live on Balfe’s Bikes, where you can get it at half the original price of £119.99.
Get these Bontrager shoes at a 50% discount
Zipp 303 S Carbon Wheels – aero, wide, and now for just £849 (was £1,088)
The 303 S wheelset features 45mm-deep carbon rims with a 23mm internal width and hookless profile — optimised for 28mm tyres but able to handle gravel up to 50mm wide.
These are tubeless-ready, fast, and surprisingly forgiving. Ideal for mixed-surface riders who want to stay light without giving up stability, you can get them on Balfe’s for just £849 — that’s down from £1,088.
Check out the Zipp 303 S wheelset at 22% off
Mega savings on Giant TCR Advanced Pro 1 Di2: a whopping £1,250 off
Giant’s flagship race bike has been refined for 2025 with integrated cabling, aero tube shapes, and an aggressive geometry built for racing and high-speed club rides. You still get the classic TCR ride feel — stiff, precise and responsive — but now with Shimano 105 Di2 and improved aerodynamics.
All cables are routed through the OverDrive Aero steerer, and CFD-tested tubing helps cut through the wind without adding weight. It’s down to just £3,649, from its original £4,899 price.
Buy the TCR Advanced Pro 1 Di2 and save £1,250
Biggest saving of the lot: Shimano Ultegra Di2 12s Groupset now £1,249 (was £2,279.89)
This is a full Ultegra R8170 Di2 12-speed groupset for £1,031 off — that’s ridiculous value, if you ask us. It’s got lightning-fast shifting, slick braking and quiet drivetrain operation under load thanks to Hyperglide+ cassettes.
This semi-wireless groupset also features the wireless cockpit, seatpost-mounted battery and hidden charge port.
Grab Ultegra Di2 with over £1,000 off
Topeak E-Booster Pump – electric inflation for just £82
A tidy digital inflator for road or MTB use, the E-Booster delivers up to 120psi on a single USB-C charge. It supports Presta and Schrader valves, and includes a silicone sleeve, hose extender and storage bag. Useful for travel or quick top-ups before your Sunday ride.
Balfe’s Bikes is offering a discount of 18% on the Topeak E-Booster Pump, which otherwise retails for £99.99.
£1,001 off this featherweight Aethos from Specialized
Minimalist looks, modern tech. The Specialized Aethos is just a pure road machine designed for low weight, perfect balance and a sublime ride feel. You get a FACT 10r carbon frame, SRAM Rival eTap AXS wireless shifting, and Roval C38 carbon wheels.
Down to £4,499 from £5,500, it’s understated, but everything here is fine-tuned for that ‘just right’ ride quality.
Get the Aethos Expert and save over £1,000
For more great midseason summer sale offers, head to balfesbikes.co.uk.
1 thought on “DealClincher x Balfe’s Bikes summer takeover: 45% off Ultegra Di2, £1,000+ off Specialized + Giant bikes, big savings on Castelli, Zipp + more”
The Aethos is a dreadful
The Aethos is a dreadful colour, and it’s a light bike with a heavyweight groupset. The Ultegra deal, though…hmmmm