With its steeply sloping top tube and integrated A-stem, the 675 is a distinctive bike. For the Light version it's been on a diet, with upgraded carbon and no metal components, reducing the frame weight to below 1kg. Andrew Dilkes tells all.

Product Overview

Overall rating:

Score 8

Look 675 Light


  • Brilliant ride
  • Pro credentials
  • Niche (you won’t see many)
  • Comfortable


  • Expensive
  • Heavy
  • Low specification


Look 675 Light


Price as reviewed:


Having been around for a couple of years, the 675’s divisive style still looks as fresh and innovative as the day it was launched. It now sits second in line to the Look throne, with the 795 and 695 slotting in above and, having been on a diet since we last saw it back in 2013, the 675 Light now boasts a sub-kilo chassis. We’ve given this bike another shake-down to see if still delivers.


The 2016 version gets Look’s iconic Mondrian paintwork


Originally aimed at the endurance (read sportive) market, bringing the top tube up to meet the stem and merging them together does a good job at disguising the surprisingly high front end. This integrated ‘A-Stem’ also does away with a stack of spacers, making the front end stiffer than other bikes in this category.

>>> Shimano Ultegra groupset review

This construction does mean that prospective owners need to be very sure of their sizing. Yes, the stem is flippable (available in either +/- 5° or 15° angles) and available in a variety of lengths (80mm to 130mm for the 5° angle, and 80mm to 120mm for the 15° angle). Personal preference is calculated using Look’s virtual measurement tool, but the bespoke shape means you can’t swap out for any old stem, should you want to make adjustments. Arguably, though, it’s worth it for the pro slammed front-end look that’s achieved.


Look’s reversible A-stem allows bar height adjustment without spacers

It’s worth noting that even with its 100 per cent carbon forks, bottom bracket, head tube and dropouts — the ‘Light’ element is only in reference to its own breed. Look is also celebrating the use of 1.5k carbon in its manufacturing. At 8.2 kilograms, it’s still pretty rotund but the total build is about a kilo lighter than the standard 675.

>>> Look 765 review


The frame’s adornments add to the weight. Put aside the top-drawer 3T Ergonova Carbon bars, everything else is pretty workmanlike. We suspect a large part of the heft is due to the Mavic Aksium wheels. Strong and robust they are, lightweight they are not.


The 86.5mm bottom bracket shell provides plenty of width for the tube connections

Dressing them in Continental’s Ultra Sport tyres also adds to the chub. Running Shimano’s faultless Ultegra groupset throughout, it’s still weightier than the brand-topping Dura-Ace found on bikes at a similar price point.

>>> Icons of cycling: Look’s clipless pedals


Despite the load, the 675 is by no means sluggish, with only the steepest gradients revealing its true weight, barely noticeable while ripping along the flats. The bike feels as urgent as you make it. Leaning on the gear out of corners or up small rises sees the bike roar forward eagerly. Even with its stiff front end, the 675 Light retains enough comfort to ensure you’re not feeling brutalised by the end of a ride.

>>> Look 795 Aerolight Proteam review

This stiffness makes for very precise and predictable handling. It was pushed hard but at no point did it feel ‘on the limit’.


However, not all in the garden is rosy. Despite the great ride, this is an expensive bike for the spec on offer. For 3.5 grand, I’d be expecting Shimano’s flagship mechanical Dura-Ace groupset, Ultegra Di2, or a better-spec set of hoops. For a frameset weighing south of 1kg, the completed build seems portly and out of place at this price point.


There’s a full Ultegra groupset and Keo 2 Max pedals

In summary

Despite my complaints, the 675 Light is still an awesome chassis. It inspires confidence, and although I have to attribute some of that to the Continental’s budget- end Ultra Sport tyres, I can’t help think how railed it would ride given a lighter groupset, some Gucci wheels and faster- rolling rubber. But all of that costs money, and given the fact that you’ve already parted with the best part of £4k, justifying another two grand’s worth of upgrades off the bat is going to be out of the question for most. However, like we always say, spend your money on the heart of the bike — that is, the frame.

Thus, if you’re done with ‘clone’ bikes, and looking for an exceptional ride on which to add upgrades over time, the 695 Light would be a fair bet.


Awesome frame which really needs some serious upgrades to bring out its best


Weight (with pedals):8.20kg
Size Tested:Medium
Frame:Look 675 Light
Fork:Look HSC 675
Shifters:Shimano Ultegra 11sp
Front Derailleur:Shimano Ultegra 11sp
Rear Derailleur:Shimano Ultegra 11sp
Cassette:Shimano 105 11-28
Chain:Shimano CN-HG 600 11sp
Brakes:Shimano Ultegra
Chainset:Shimano Ultegra 50-34t compact
Wheelset:Mavic Aksium
Tyres:Continental Ultra Sport 23mm
Handlebar:3T Ergonova Stealth
Stem:Look A-stem
Seatpost:Look carbon DIA: 27.2mm
Saddle:Selle Italia SLR
Pedals:Look Keo 2 Max
Sizes:XS, S, M, L, XL, XXL
Colours:black with red detailing
Bottom Bracket:86.5mm pressfit
  • what i like is the LOOK carbon frame profile design,man people will say,it is heavy weight(8.20kg) for carbon road bike,but you know it is just training bike with Mavic Entry ALLOY Wheels,the wheels are heavier…but 3799 price is too…..you know that

  • Tony Short

    It costs the thick end of 4 grand and it’s supoosed USP is it’s light weight. I don’t actually base my assumptions about a bike on it’s lightness but Look obviously put a lot of stall by it, in which case they are defeating the object in putting comparitively heavy wheels on it. Aksiums are probably great wheels, but for the money they’re asking for this bike I’d expect something more high end or the option to spec my own wheelset. As for the saddle, same applies I suppose! I wouldn’t expect something costing 20 quid from Selle Italias budget range but then again, I won’t be buying this bike :0)

  • Stuart Gardner

    Aksiums are great training wheels, durable with decent bearings, any rider would rather have some training wheels and choose which high end wheels they put on it for races/events to meet their needs rather than pay £5k for a bike and use the wheels you get given. Next you’ll be saying the bike should come with a £200 saddle because obviously that will fit everyones needs perfectly. It’s great you choose your stem size and angle when ordering!

  • gareth george

    8.20kg… Light? Canyon ultimate cf slx with red 22,same price 6.10kg without pedals.

  • Tony Short

    Agreed, it’s hideous and way too expensive for that spec.

  • nortonpdj

    675 Light? they’re having a laugh. It’s overpriced/underspecced (if that’s a word, but you know what I mean), and heavy. Decent wheels will save maybe 500g, but should be part of the spec at this price. And I know it’s subjective, but I find it very ugly.

  • Tony Short

    Yeah but it’s 3800 quid and it’s called “Light”. Aksiums may be fine but do they belong on a bike like this? Why not go the whole hog and put a Sora groupset on it?

  • naa

    There’s nothing wrong with Aksiums. They are admittedly very cheap, but they work perfectly well.

  • Christopher James Cartwright

    It’s a beautiful peice of kit but its just under £4000! Not the place for your average Joe. Hmm lottery for me then.

  • Tony Short

    3800 quid and the first thing you’ve got to do is bin the wheels! Why do manufacturers do this? Couldn’t they just put a decent set of hoops on to start with?