Cycling Plus

MAVIC KSYRIUM PRO SL T › The Ksyrium goes carbon

£1575

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NEW FOR 2016, the 14 variants of Mavic’s Ksyrium wheels now include carbon fibre rims too. Billed as the lightest Ksyrium ever, the Pro Carbon SL is available in clincher and tubular versions, and for rim or disc brakes.

Our tubular set came with skewers and Swissstop yellow brake pads, and just exceeded their claimed 1190g weight at 1228g. Add 110g for the skewers and they’re still astonishin­gly light. They’re supplied with Mavic’s 25mm Griplink and Powerlink 260g tubeless tubulars, made by Tufo in the Czech Republic.

Mavic’s new 320g carbon tubular rim is just 25mm tall for agility, though its 23mm width is 3mm up on the previous generation and can accommodat­e 25mm to 32mm tyres, Mavic says.

The Ksyrium’s signature broad-bladed aluminium spokes have been swapped for slim double-butted steel, with square aluminium nipples. Both hub bodies and axles are aluminium, and the new Instant Drive 360 (ID360) rear hub is Mavic’s lightest ever, with 9-degree engagement. This means almost instant drive when pedalling out of corners, and with great lateral stiffness and superlight rims, that’s a good thing.

Reactivity and accelerati­on are excellent, and maintainin­g speed feels very efficient. In terms of aero, Mavic says only that it ‘was a design considerat­ion’, and the bullet-nosed shape always feels planted, stable and very nimble. Something so feathery makes everything seem easier, and we zipped up our favourite local climb in a higher gear than usual, throwing in a few unusually sharp accelerati­ons... just because.

We set the brake pads further from the rim than usual to avoid minor rub under heavy loads, but there was still good braking force. Mavic has used a resin it says exceeds the most extreme cycling heat parameters, and claims its wheels stop faster than anyone’s. On fast, dry descents, the brakes gave instant confidence and fine feel, with no squealing or grabbing. They’re still good in the wet, but you need to be bold and pull hard to get the best from them.

Mavic’s new tyres are a huge improvemen­t, and play their part when it comes to cornering and decelerati­on. They roll fast and grip progressiv­ely, though the rubber wears quicker than some and they aren’t the most supple tubulars, likely due to the rubberised sidewalls of their tubeless design.

HIGHS

Weight, speed, agility, new hub design

LOWS

Cost, braking in the wet needs bravado

 ??  ?? The carbon Ksyrium puts Mavic back in the race, but there’s a lot of competitio­n
The carbon Ksyrium puts Mavic back in the race, but there’s a lot of competitio­n
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