Dolan ADX Titanium 105 Di2

£3,099.98 Titanium endurance machine with Shimano’s new 105 Di2

Weight 9.3kg (58.5cm) Frame 3Al/2.5V titanium Fork Alpina ADX carbon Gears Shimano 105 Di2 (50/34, 11-34) Wheels Mavic Cosmic SL 32 Brakes Shimano 105 hydraulic disc Finishing kit Deda Zero bar and stem, Selle Italia Novus saddle, Alpina Ti seatpost, Continental GP5000 28c tyres

LIVERPOOL-BASED DOLAN HAS been designing its own-brand bikes under founder Terry Dolan since 1977. With close ties to British cycling and track racing, its range covers everything from road and time-trial machines to gravel, tandem and ebikes.

Dolan’s ADX Titanium is the brand’s take on the classic endurance bike, with a smart, brushed-finish 3Al/2.5V tubeset built into a semi-sloping frame. Proper mudguard mounts and provision for rear racks make it a truly year-round machine, adding commuting and light touring to the ADX’s endurance credentials.

The ADX is available from £2,399 with mechanical Shimano 105, to £6,449.99 for a model with Dura-Ace Di2. I opted for the new 105 Di2 to get a bit of the flagship feel for less than half the price.

The geometry is classic road bike, with a steep, 74° head and similarly upright 73.5° seat angle, though the riding position is relaxingly upright, with a tall 623mm stack and short 390.2mm reach. I thought this might make the bike feel too sedate, but the steepness of the head angle combined with the straight-legged fork make the steering quick and the ADX feels responsive thanks to the stiffness through the bottom bracket.

What usually marks out a titanium frame is a softer spring than you get with quality steel frames such as the Cotic’s. Dolan’s ADX, however, feels more like the spring of steel, which means the bike’s great fun to ride, with quick handling and a position that’s very easy to live with. In short, the ADX offers everything you’d want from an endurance bike.

I found Shimano’s new 105 Di2 impressive. It shares the same 12-speed gearing as its more expensive siblings, though with fewer gearing options available. Our test bike’s climbing-friendly 50/34 chainset and 11/34 cassette’s 1:1 bottom gear will keep you spinning up the steepest climbs though.

The rear-mech’s shifting is pretty much indistinguishable from the dearer Ultegra Di2. And while its front shifts aren’t quite as quick as Ultegra, the motor-assisted shifts under load between chainrings is dependable and accurate. The levers lack the additional buttons of Ultegra and DuraAce, so you can’t control your Garmin head unit hands-free. Thankfully the 105 Di2’s semi-wireless design lets you connect to your Garmin or Wahoo head unit to show your gearing and each battery’s individual level. The mechs are powered by a wired seatpost-mounted battery with the levers using coin cells.

Shimano has improved 105’s braking too, with a more progressive lever action that gives more feel than ever. The distance between the pad and rotor has been increased by 10% to reduce the likelihood of rubbing, which seemed to work, though on a couple of wet rides I did get a bit of brake squeal under hard braking.

Mavic’s understated Cosmic SL wheels are reasonably light and have a 32mm-deep rim with a 21mm internal width. Their special shaped and sealed rim bed makes them very easy to set up and maintain as tubeless. Their stiff, solid feel is classic Mavic. The 9˚-engagement freehub picks up quickly and the wheels’ tautness balances the smooth-riding titanium frame. The tyres are even more impressive. Continental’s 28mm GP5000s are superb: compliant, fast, grippy and durable. Be aware they’re not the tubeless version, though.

Dolan finishes off the ADX with a smattering of quality Italian components, including Deda’s dependable Zero stem and bar. The stem is stiff and light, the bar has a good shape with a big, hand-friendly semicompact drop and nicely ovalised tops. It’s well complemented by Deda’s tacky and grippy all-weather tape. Alpina’s titanium seatpost is polished to match the frame and is topped with Selle Italia’s well-padded Novus saddle, with a full-length channel and split nose that I found comfortable as the hours – and miles – mounted up.

My only niggle with the ADX is that one of the down-tube’s welded-in bottle bosses had a very coarse thread that wasn’t perfectly aligned. Ideally this thread would have been chased out properly when the bike was assembled, but that’s a tiny thing on well-priced bike with a quality ride.

“This is Dolan’s take on the classic endurance bike with a brushedfinish 3Al/2.5V titanium tubeset in a semi-sloping frame”