The Ksyrium range from Mavic has always had a good reputation for offering decent performance whatever your type of riding: a true set of all-rounders. These aluminium alloy Pro UST Disc models further confirm this with a solid build quality and plenty of stiffness, all at a decent weight.
I love the feel of the Pro Disc wheels. They give a firm ride while managing to keep things just on the good side of harsh, almost carbon fibre like.
With 24 spokes front and rear, the build certainly feels stiff. Climbing out of the saddle or fast cornering doesn't see anything in the way of flex. The two-cross spoking pattern on the front wheel handles the high braking forces from the disc, while at the rear you get two-cross for the drive side but because of the lower braking forces here, Mavic has gone for radial spoking on the non-drive side.
For the rim, Mavic uses Maxtal, its own specification of aluminium alloy, which it says gives a higher strength to weight ratio than the more commonly used 6061 grade. This keeps the weight down too, to just 1,650g without tyres and valves, which is pretty good for a wheel of this type and strength, if not exceptional for the money. The £459 Miche Syntium DX wheels, for instance, are the same weight but almost half the price.
At 2,260g on our scales, with tyres included, the Mavics do still feel light in use, and you don't feel hampered at all when you get out of the saddle for a quick sprint or to tackle a short, sharp hill.
The 22mm rim depth suits a lot of different terrain and conditions, with only those seeking any form of aero advantage going to be left wanting.
The 19mm internal width stretches the tyres out a little from their nominal size, with the fitted 25s sitting closer to 26.5mm. Most disc brake-equipped bikes have plenty of tyre clearance but it's worth bearing in mind when speccing tyres on wider wheels.
I didn't just use these wheels on the road as I took a few diversions onto gravel bridleways, towpaths and other rough tracks and they can take a kicking. Rocks and potholes have done little to affect the trueness of the rims, and everything still feels as tight and smooth as when I first started riding them.
With just nine degrees of rotation between the engagement points on the freehub, the wheels respond straight away when asked and if you are a track stander at the lights you won't feel any of that 'float' when you are rocking the bike backwards and forwards.
The freehub body itself looks to be plenty strong enough to cope with hard accelerations or any efforts that see a high amount of power going through the cassette. I can easily gouge softer alloy options, with the cassette splines digging into the body, but the Ksyriums are barely showing a mark.
As standard, the freehub comes in a Shimano/SRAM setup but there are options to change to Campagnolo or SRAM's XD Road.
Included in the box are quick release adaptors if you aren't running thru-axles (the Ksyriums are set up for 12mm as standard, but you can adapt the front to 15mm) plus the tubeless sealant, syringe, valves and the various tools to keep the wheels running smooth.
You get the tyres too: Mavic's own Yksion Pro UST. You may have seen UST appearing on a lot of Mavic's wheels lately and it's the move across to tubeless setups for its higher end models.
Mavic has offered wheel/tyre combinations for quite a while now, which allows the company to keep tight tolerances on both. I wasn't a massive fan of the non-UST tyres, which I found lacked grip and punctured frequently, but the new models are a marked improvement.
These are the same tyres I've been running on my wet weather bike, fitted to Ksyrium UST Elite rim-braked wheels.
I've yet to pick up a simple puncture or nick on those, and I haven't on this set either. The only downside to that is that I can't tell you how good the Mavic branded sealant works...
Grip in the wet and dry is pretty consistent and they offer decent rolling resistance and braking performance.
As you'd expect, fitment to the wheels is seamless and very easy, and initial inflation after adding the sealant was faultless even with just a standard track pump.
When we look at value, £899 might seem pretty pricey for a set of aluminium alloy wheels when you can get excellent carbon fibre rims and lighter weight from the likes of Just Riding Along's excellent Gecko wheels for £850. They are very impressive and a solid build, too, just like the Ksyriums.
You are getting the tyres in the Mavic package, mind; if you had to buy them separately online they would set you back about £90, plus you've got to take sealant into account, so you could say the Ksyriums are around £800.
Still, I called those Miche Syntium DX wheels up top pricey against the opposition at £459, and while the Mavics are a much better wheel all round, there are plenty of cheaper alternatives - not least Mavic's, 1670g the pair, Ksyrium Elite UST Disc and 1690g the pair Ksyrium UST Disc at £585 and £450 respectively.
To sum up, the Ksyriums are really well built, they ride really well, and in my opinion look really smart, but I think I'd pull up short of buying them at full rrp. Find them with a decent discount and I'd definitely recommend them.
True all-rounders with a solid build quality but you do have to pay for it
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road.cc test report
Make and model: Mavic Ksyrium Pro UST Disc Wheel Set
Size tested: 700C
Tell us what the wheel is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?
Mavic says, "Combining the performance attributes of our new UST Road Tubeless system and purpose-built disc-brake technology, this new addition to the Ksyrium family is a versatile all-rounder for your most challenging road rides."
Tell us some more about the technical aspects of the wheel?
Freewheel: Shimano/Sram, convertible to Campagnolo and XD-R with optional driver bodies
Compatible Adapters and freewheel bodies
ID360 Shimano / Sram freewheel body (V3430101 - Delivered on the wheel)
ID360 XD freewheel body (V2580101)
12 to 9mm rear adapter for quick release (V2510801 - Delivered with the wheel)
12x142 rear axle adapters (V2510701 - Delivered with the wheel)
15mm axle (Center lock: V22 524 01, 6 Bolts: V22 523 01) + 15mm fork rest (B4104401)
12 to 9mm front adapter for quick release (V2680301 - Delivered with the wheel)
Pair without tyre: 1650 grams
Front without tyre: 770 grams
Rear without tyre: 880 grams
Front bearings : adjustable sealed cartridge bearings (QRM+), Rear bearings : auto adjust sealed cartridge bearings (QRM Auto)
Freewheel: Instant Drive 360
Front and rear bodies: aluminum
Axle material: aluminum
For a longer longevity of the wheel, Mavic recommends that the total weight supported by the wheels don't exceed 120kg, bike included
ASTM CATEGORY 2 : road and offroad with jumps less than 15cm
Max. Pressure tubeless: 25mm 6 bars - 87 PSI, 28mm 5 bars - 70 PSI. Max pressure tubetype: 25mm 7 bars - 102 PSI, 28mm 6 bars - 87 PSI
Recommended tyre sizes: 25 to 32 mm
Height: 22 mm
ETRTO size: 622x19TC Road
Weight reduction: ISM 4D
Internal width: 19 mm
Disc brake specific profile
Valve hole diameter: 6.5 mm
Tyre: UST Tubeless and tubetype
Shape: straight pull, bladed, double butted front and rear non drive side
Lacing: front crossed 2, rear Isopulse
Nipples: Fore integrated aluminum
Count: 24 front and rear
Front and Rear Tread: 11 Storm single compound
Yksion Pro UST
UST Tubeless Ready
Dimension: 25-622 (700x25c)
Breaker: Polyamide, from bead to bead
Casing: 127 TPI
Disc standard: Center Lock(R) only
Color: Black only
Tyre sealant syringe
Rear QR adapters for Instant Drive 360
Mavic tyre sealant (rear wheel)
Multifonction adjustment wrench
Specific disc bolts
Front QR adapters
UST valve and accessories
A lot of cheaper wheels out there.
Did the wheels stay true? Any issues with spoke tension?
Yes, they stayed true even after quite a bit of abuse.
How easy did you find it to fit tyres?
How did the wheel extras (eg skewers and rim tape) perform?
The tyres, sealant and valves all worked perfectly together with the wheels.
Tell us how the wheel performed overall when used for its designed purpose
Great on the road and strong enough to stand up to the rigours of light off-road use.
Tell us what you particularly liked about the wheel
That yellow spoke and excellent ride quality.
Tell us what you particularly disliked about the wheel
Top end of the budget.
How does the price compare to that of similar products in the market, including ones recently tested on road.cc?
They are a very similar wheel to the JRA Gecko mentioned in the review at around the same sort of price, but those are carbon fibre; if you went alloy you could get close to the same weight for a lot less.
Did you enjoy using the wheel? Yes
Would you consider buying the wheel? If I could find them a fair bit cheaper.
Would you recommend the wheel to a friend? Yes
Use this box to explain your overall score
They're very good wheels from pretty much all aspects, but they are priced right at the upper limits for what most would be happy to spend on an alloy set of wheels.
About the tester
I usually ride: This month's test bike My best bike is: B'Twin Ultra CF draped in the latest bling test components
I've been riding for: Over 20 years I ride: Every day I would class myself as: Expert
I regularly do the following types of riding: time trialling, commuting, club rides, sportives, fixed/singlespeed
With 20 years of road cycling and over 150,000 miles in his legs it's safe to say Stu is happiest when on the bike whatever the weather. Since writing his first review for road.cc back in 2009 he has also had a career in engineering including 3D-CAD design and product development, so has a real passion for all of the latest technology coming through in the industry but is also a sucker for a classic steel frame, skinny tyres, rim brakes and a damn good paintjob.
His fascination with gravel bikes is getting out of control too!