Grippy gravel tyres, lightweight enduro wheels and a pinch-flat prevention product

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<img src="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/First-Look-Friday-06-09-691b608.jpg?quality=90&resize=620,413" srcset="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/First-Look-Friday-06-09-691b608.jpg?quality=45&amp;resize=1440,959 1440w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/First-Look-Friday-06-09-691b608.jpg?quality=45&amp;resize=1200,799 1200w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/First-Look-Friday-06-09-691b608.jpg?quality=90&amp;resize=960,639 960w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/First-Look-Friday-06-09-691b608.jpg?quality=90&amp;resize=720,479 720w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/First-Look-Friday-06-09-691b608.jpg?quality=90&amp;resize=576,383 576w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/First-Look-Friday-06-09-691b608.jpg?quality=90&amp;resize=360,239 360w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/First-Look-Friday-06-09-691b608.jpg?quality=90&amp;resize=180,119 180w, " sizes="(max-width: 620px) 100vw, 620px" width="620" height="413" class="wp-image-395106 alignnone size-landscape_thumbnail" alt="First Look Friday" title="First Look Friday" /> <p>Welcome to another addition of <em>First Look Friday</em>, where we take a closer look at the very best products to arrive in the <em>BikeRadar</em> office this week.</p>
<p>This time we’ve got supple and wide tan wall tyres, some of the lightest enduro-ready wheels on the market, and yet another tyre insert designed to prevent punctures.</p>
<p>This week we’re at the world’s largest cycling trade show, <a href="https://www.bikeradar.com/events/eurobike/">Eurobike</a>, and there’s been plenty to talk about so far: from <a href="https://www.bikeradar.com/news/brompton-explore/">Brompton’s new adventure folder the Explore</a> and news that <a href="https://www.bikeradar.com/news/schwalbe-tubulars-discontinued/">Schwalbe is ceasing production of tubular tyres</a> to <a href="https://www.bikeradar.com/news/mountain-bike-with-abs-brakes/">ABS brakes on mountain bikes</a> and <a href="https://www.bikeradar.com/news/ceramicspeed-driven-chainless-shifting/">CeramicSpeed’s mad chainless Driven drivetrain that now changes gear and is for mountain bikes too</a>.</p>
<p><iframe title="CeramicSpeed’s Chainless MTB &amp; Road Drivetrain Now Shifts" width="960" height="540" src="https://www.youtube.com/embed/bmEYfdZOGAc?feature=oembed" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></p>
<p>We’ve also seen loads of product reviews from <a href="https://www.bikeradar.com/reviews/components/forks/">suspension forks</a> to <a href="https://www.bikeradar.com/reviews/accessories/bags/panniers/tailfin-luggage-system-review/">pannier racks</a>, and a <a href="https://www.bikeradar.com/reviews/bikes/">fair few bikes besides</a>. Just yesterday we covered the launch of the new Trek Allant+ and Supercaliber, as well as Orbea’s new lightweight, aero OMX.</p>
<p>In between getting out on our bikes this weekend, we’re looking forward to watching the final round of the cross-country and downhill mountain bike World Cup in Snowshoe, USA. <a href="https://www.redbull.com/int-en/discover">You can watch it here on Red Bull TV.</a></p>
<p>But first, let’s get into the nitty-gritty of some shiny new products.</p>
<h2>DT Swiss EXC 1200 wheels</h2>
<div class="img-container img-container–landscape-thumbnail"><img src="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=620,413&amp;background=white" srcset="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=1880,1252&amp;background=white 1880w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=1456,969&amp;background=white 1456w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=1112,740&amp;background=white 1112w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=940,626&amp;background=white 940w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=728,484&amp;background=white 728w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=556,370&amp;background=white 556w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=355,236&amp;background=white 355w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=340,226&amp;background=white 340w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-cdeaf18.jpg?quality=90&amp;lb=320,213&amp;background=white 320w, " sizes="(min-width: 992px) 940px, (min-width: 768px) 728px, (min-width: 576px) 556px, calc(100vw – 20px)" width="620" height="413" class="wp-image-395102 alignnone size-landscape_thumbnail img-container__image" alt="DT Swiss EXC 1200 wheels" title="DT Swiss EXC 1200 wheels" data-source-name="Immediate Media"></div>
<div class="caption-hold">
<figcaption class="wp-caption-text"><span class="caption-copy"><i class="icon-arrow icon-camera-circle"></i> DT Swiss’ first carbon wheelset is tough enough for enduro racing and weighs just over 1,700g in 29in.</span></figcaption><span class="im-image-caption"> <i>Immediate Media</i></span>
</div>
<p>DT Swiss is no stranger to carbon mountain bike wheels. It’s already got the <a href="https://www.dtswiss.com/en/products/wheels-mtb/cross-country/xrc-1200-spline/">XRC 1200 </a>for cross-country racing and the <a href="https://www.dtswiss.com/en/products/wheels-mtb/all-mountain/xmc-1200-spline/xmc-1200-spline-30/">XMC 1200, </a>which was intended for lighter duty all-mountain applications (though YT still specced it on its enduro-capable <a href="https://www.bikeradar.com/news/yts-capra-gets-fresh-updates-for-2019/">Capra</a>).</p>
<p>But when it comes to enduro wheels  DT has stuck with the alloy rimmed <a href="https://www.dtswiss.com/en/products/wheels-mtb/enduro/ex-1501-spline-one/">EX 1501 Spline One</a> wheels as its top-end offering.</p>
<p>It’s a highly-regarded wheelset, and weighs a very respectable 1,893g a pair on our scales in 29in with valves and tape. According to DT’s UK rep, DT would only make a carbon enduro wheel if it had a significant weight advantage, and that’s exactly what we have here.</p>
<p>These tip our scales at 1,716g in 29in with valves. That will make them among the lightest enduro-ready wheels we’ve tested.</p>
<div class="img-container img-container–landscape-thumbnail"><img src="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=620,413&amp;background=white" srcset="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=1880,1252&amp;background=white 1880w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=1456,969&amp;background=white 1456w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=1112,740&amp;background=white 1112w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=940,626&amp;background=white 940w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=728,484&amp;background=white 728w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=556,370&amp;background=white 556w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=355,236&amp;background=white 355w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=340,226&amp;background=white 340w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-rim-02d73b3.jpg?quality=90&amp;lb=320,213&amp;background=white 320w, " sizes="(min-width: 992px) 940px, (min-width: 768px) 728px, (min-width: 576px) 556px, calc(100vw – 20px)" width="620" height="413" class="wp-image-395101 alignnone size-landscape_thumbnail img-container__image" alt="DT Swiss EXC 1200 rim" title="DT Swiss EXC 1200 rim" data-source-name="Immediate Media"></div>
<div class="caption-hold">
<figcaption class="wp-caption-text"><span class="caption-copy"><i class="icon-arrow icon-camera-circle"></i> The carbon rim is claimed to be at least as impact-resistant DT’s EX511 alloy rim.</span></figcaption><span class="im-image-caption"> <i>Immediate Media</i></span>
</div>
<p>According to DT, they’re at least as tough as the notoriously reliable EX 1501 wheels in lab tests.</p>
<p>The carbon rim is stiffer, but DT compensates for this with 28 bladed spokes, which apparently allow a little more flex in the wheel than round spokes, as well as lower spoke tension.</p>
<p>These are tied in to DT’s new 180 hubs, which we featured in an earlier edition of <em><a href="https://www.bikeradar.com/features/16-08-19/">First Look Friday</a></em>. They use a simplified star ratchet design, ceramic bearings for lower rolling resistance and a wider bearing stance to reduce side-load on the bearings.</p>
<div class="img-container img-container–landscape-thumbnail"><img src="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=620,413&amp;background=white" srcset="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=1880,1252&amp;background=white 1880w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=1456,969&amp;background=white 1456w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=1112,740&amp;background=white 1112w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=940,626&amp;background=white 940w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=728,484&amp;background=white 728w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=556,370&amp;background=white 556w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=355,236&amp;background=white 355w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=340,226&amp;background=white 340w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC-1200-hub-d8d5208.jpg?quality=90&amp;lb=320,213&amp;background=white 320w, " sizes="(min-width: 992px) 940px, (min-width: 768px) 728px, (min-width: 576px) 556px, calc(100vw – 20px)" width="620" height="413" class="wp-image-395100 alignnone size-landscape_thumbnail img-container__image" alt="DT Swiss EXC 1200 hub" title="DT Swiss EXC 1200 hub" data-source-name="Immediate Media"></div>
<div class="caption-hold">
<figcaption class="wp-caption-text"><span class="caption-copy"><i class="icon-arrow icon-camera-circle"></i> DT’s 180 hubs are light, free-spinning and compatible with Centre Lock rotors as well as 6-bolt discs with the included adaptors.</span></figcaption><span class="im-image-caption"> <i>Immediate Media</i></span>
</div>
<div class="img-container img-container–landscape-thumbnail"><img src="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=620,413&amp;background=white" srcset="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=1880,1252&amp;background=white 1880w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=1456,969&amp;background=white 1456w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=1112,740&amp;background=white 1112w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=940,626&amp;background=white 940w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=728,484&amp;background=white 728w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=556,370&amp;background=white 556w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=355,236&amp;background=white 355w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=340,226&amp;background=white 340w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DT-Swiss-EXC1200-valve-107033f.jpg?quality=90&amp;lb=320,213&amp;background=white 320w, " sizes="(min-width: 992px) 940px, (min-width: 768px) 728px, (min-width: 576px) 556px, calc(100vw – 20px)" width="620" height="413" class="wp-image-395103 alignnone size-landscape_thumbnail img-container__image" alt="DT Swiss EXC1200 valve" title="DT Swiss EXC1200 valve" data-source-name="Immediate Media"></div>
<div class="caption-hold">
<figcaption class="wp-caption-text"><span class="caption-copy"><i class="icon-arrow icon-camera-circle"></i> One feature we really like is the valve. It has an oblong lockring to make it easier to clamp the valve tight enough onto the rim to prevent any leaking and a valve core remover in the valve cap.</span></figcaption><span class="im-image-caption"> <i>Immediate Media</i></span>
</div>
<p>They’re available with SRAM XD freehubs as well as<a href="https://www.bikeradar.com/news/shimano-xt-and-slx-12-speed/"> Shimano’s new Microspline 12-speed</a> adaptor.</p>
<ul>
<li>£1,900 / $2,735</li>
<li>Buy now from <a href="https://www.bike24.com/p2337234.html">Bike24</a>
</li>
</ul>
<h2>Teravail Rutland gravel tyre</h2>
<div class="img-container img-container–landscape-thumbnail"><img src="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=620,413&amp;background=white" srcset="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=1880,1252&amp;background=white 1880w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=1456,969&amp;background=white 1456w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=1112,740&amp;background=white 1112w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=940,626&amp;background=white 940w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=728,484&amp;background=white 728w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=556,370&amp;background=white 556w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=355,236&amp;background=white 355w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=340,226&amp;background=white 340w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-86e57aa.jpg?quality=90&amp;lb=320,213&amp;background=white 320w, " sizes="(min-width: 992px) 940px, (min-width: 768px) 728px, (min-width: 576px) 556px, calc(100vw – 20px)" width="620" height="413" class="wp-image-395119 alignnone size-landscape_thumbnail img-container__image" alt="Teravail Rutland tyre" title="Teravail Rutland" data-source-name="Immediate Media"></div>
<div class="caption-hold">
<figcaption class="wp-caption-text"><span class="caption-copy"><i class="icon-arrow icon-camera-circle"></i> Gravel tyres are looking more and more like early nineties MTB tyres.</span></figcaption><span class="im-image-caption"> <i>Immediate Media</i></span>
</div>
<p>Teravail offers an impressive range of gravel tyres, as well as road and mountain bike options too. The Rutland is aimed at soft-conditions gravel riding.</p>
<p>It’s got a pretty toothy tread (for a gravel tyre), with closely packed centre blocks and ramped leading edges to minimise rolling-resistance.</p>
<p>The tread towards the edge of the tyre is slightly taller and spaced further apart to help it bite into mud and soft dirt when you’re leaning into a corner. The intermediate tread blocks are siped (they have small grooves cut into them) to help the rubber splay out like a goat’s hoof to improve grip too.</p>
<div class="img-container img-container–landscape-thumbnail"><img src="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=620,413&amp;background=white" srcset="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=1880,1252&amp;background=white 1880w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=1456,969&amp;background=white 1456w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=1112,740&amp;background=white 1112w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=940,626&amp;background=white 940w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=728,484&amp;background=white 728w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=556,370&amp;background=white 556w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=355,236&amp;background=white 355w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=340,226&amp;background=white 340w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Teravail-Rutland-tread-9538224.jpg?quality=90&amp;lb=320,213&amp;background=white 320w, " sizes="(min-width: 992px) 940px, (min-width: 768px) 728px, (min-width: 576px) 556px, calc(100vw – 20px)" width="620" height="413" class="wp-image-395118 alignnone size-landscape_thumbnail img-container__image" alt="Teravail Rutland tread" title="Teravail Rutland tread" data-source-name="Immediate Media"></div>
<div class="caption-hold">
<figcaption class="wp-caption-text"><span class="caption-copy"><i class="icon-arrow icon-camera-circle"></i> The tread is designed to offer both straight-line speed and cornering grip.</span></figcaption><span class="im-image-caption"> <i>Immediate Media</i></span>
</div>
<p>They’re available in three sizes: 650b x 47mm, 700c x 37mm and 700c x 42mm. We have the latter in a handsome tan wall variant.</p>
<p>There’s a tough casing option for added puncture protection, and a light and supple casing, which should offer less rolling resistance and a smoother ride at a given pressure.</p>
<p>In 700c x 42mm the tyre weighs 453g on our scales of truth. Despite its old-school looks, it is of course tubeless ready.</p>
<ul>
<li>£55 / $55</li>
<li><a href="https://www.thewoodscyclery.co.uk/shop/components/tyres/teravail-rutland-650b-x-47-black-durable-casing/">Buy from The Woods Cyclery</a></li>
</ul>
<p><iframe title="Felix’s 200km Icelandic Gravel Race | Poor Pacing, Hard Racing &amp; Epic Scenery" width="960" height="540" src="https://www.youtube.com/embed/o03kw08KT_o?feature=oembed" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></p>
<h2>Rockstop rim protector</h2>
<div class="img-container img-container–landscape-thumbnail"><img src="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=620,413&amp;background=white" srcset="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=1880,1252&amp;background=white 1880w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=1456,969&amp;background=white 1456w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=1112,740&amp;background=white 1112w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=940,626&amp;background=white 940w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=728,484&amp;background=white 728w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=556,370&amp;background=white 556w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=355,236&amp;background=white 355w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=340,226&amp;background=white 340w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/Rockstop-a1ce277.jpg?quality=90&amp;lb=320,213&amp;background=white 320w, " sizes="(min-width: 992px) 940px, (min-width: 768px) 728px, (min-width: 576px) 556px, calc(100vw – 20px)" width="620" height="413" class="wp-image-395117 alignnone size-landscape_thumbnail img-container__image" alt="Rockstop rim protector" title="Rockstop rim protector" data-source-name="Immediate media"></div>
<div class="caption-hold">
<figcaption class="wp-caption-text"><span class="caption-copy"><i class="icon-arrow icon-camera-circle"></i> Though far from the first in-tyre insert, Rockstop looks to be better made than most.</span></figcaption><span class="im-image-caption"> <i>Immediate media</i></span>
</div>
<p>The mountain bike market is awash with inserts like the Rockstop. They are designed to prevent pinch flats and rim damage in a tubeless mountain bike tyre by cushioning the tyre from the rim when the wheel impacts a rock, which would otherwise press the tyre against the rim bead.</p>
<p>Most are made from foam and <a href="https://www.bikeradar.com/features/no-more-flat-tyres-three-puncture-preventers-tested/">we’ve found that some work much better than others</a>. The problem with foam is that it can absorb tubeless sealant, so there’s less liquid left to plug tears in the sidewall and you need to top up the sealant more often.</p>
<p>Rockstop uses a Polyurethane-based rubberised polymer, which is claimed to absorb no sealant. Apparently, the same material is used in Formula One car bump stops. And as we all know, if it works in a Formula One car it must be ideal for a bicycle, right?</p>
<div class="img-container img-container–landscape-thumbnail"><img src="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=620,413&amp;background=white" srcset="https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=1880,1252&amp;background=white 1880w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=1456,969&amp;background=white 1456w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=1112,740&amp;background=white 1112w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=940,626&amp;background=white 940w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=728,484&amp;background=white 728w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=556,370&amp;background=white 556w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=355,236&amp;background=white 355w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=340,226&amp;background=white 340w, https://images.immediate.co.uk/production/volatile/sites/21/2019/09/DSC7253-ad29b63.jpg?quality=90&amp;lb=320,213&amp;background=white 320w, " sizes="(min-width: 992px) 940px, (min-width: 768px) 728px, (min-width: 576px) 556px, calc(100vw – 20px)" width="620" height="413" class="wp-image-395155 alignnone size-landscape_thumbnail img-container__image" alt="Rockstop" title="Rockstop" data-source-name="Immediate Media"></div>
<div class="caption-hold">
<figcaption class="wp-caption-text"><span class="caption-copy"><i class="icon-arrow icon-camera-circle"></i> The holes save weight while the central ridges hold it in the rim bed.</span></figcaption><span class="im-image-caption"> <i>Immediate Media</i></span>
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<p>The insert is slim in profile, with just a few mm of padding above the rim bead. The design is relatively complex, with large holes in the middle to save weight where it’s not needed to protect the rim edges. Despite this, it’s one of the heavier inserts at 247g on our scales in 29er size.</p>
<p>For comparison, similar foam inserts such as <a href="https://www.bikeradar.com/reviews/accessories/tyre-liners/huck-norris-review/">Huck Norris</a> or Nukeproof Ard weigh 106g and 144g respectively. Meanwhile <a href="https://www.bikeradar.com/reviews/accessories/tyre-liners/cushcore-tyre-protection-system-review/">CushCore</a> — one of the heaviest — weighs 265g, but it improves sidewall stability and rough-terrain traction as well as reducing the risk of picking up a pinch-flat.</p>
<p>By the time you read this we’ll be out testing it to see if it works any better than the competition.</p>
<ul>
<li>£65</li>
<li><a href="https://www.rockstopmtb.co.uk/">Find out more from Rockstop</a></li>
</ul>
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