About the author: Jason Sumner

An avid cyclist, Jason Sumner has been writing about two-wheeled pursuits of all kinds since 1999. He’s covered the Tour de France, the Olympic Games, and dozens of other international cycling events. He also likes to throw himself into the fray, penning first-person accounts of cycling adventures in British Columbia, Belgium, Brazil, Costa Rica, France, and Peru among many others. Sumner, who joined the RoadBikeReview.com / Mtbr.com staff in January, 2013, has also done extensive gear testing and edited a book on cycling tips. When not writing or riding, the native Coloradoan can be found enjoying the great outdoors with his wife Lisa.



Compare-O Bottom Line: Cannondale Trigger 29 Carbon 2 has the good kind of split personality

The split personality Cannondale Trigger Carbon 2 has the climbing chops of a short-travel XC racer, but can rip descents like a true trail bike.

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Compare-O Bottom Line: GT Sensor Carbon Expert’s stellar suspension performance underwhelmed by parts spec

GT’s new AOS suspension design delivers high-level performance. But can it mask sub-parts spec.

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Enduro Compare-O: The Mtbr test crew picks their favorite Dream Bike Spec components

Our test crew picks their ultimate, no-holds-barred component mix from the Enduro Compare-O in our Dream Spec feature.

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Compare-O Bottom Line: Highly versatile Ibis Ripley eschews convention to splendid results

The Ibis Ripley has the get-up-and-go of a long-travel cross-country bike, the playfulness of a small-wheeled trail tamer, and even the cajones to tackle some light-duty enduro racing.

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Compare-O Bottom Line: Sublime Specialized S-Works Stumpjumper FSR EVO 29 makes a case for substance over buzz

If you’re a fan of big wheeled bikes, the Specialized S-Works Stumpjumper FSR EVO 29 is a sure fire hit. And if you’re skeptical of wagon wheels, this bike just might change your mind.

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Compare-O Bottom Line: Ultimate one bike quiver? The $10k Santa Cruz 5010 Carbon might be it

You won’t win the Enduro World Series on this bike, but you could ride it just about anywhere in the world.

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Compare-O First Look: Cannondale Trigger 29 Carbon 2

The Trigger 29 Carbon 2 eschews traditional technology with a unique two-in-one shock and dual crown, single legged fork. Is Cannondale being different just for the sake of it? Or will this technology tame the trail?

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Compare-O First Look: GT Sensor Carbon Expert

This once hallowed bicycle brand lost its way for a while, but now it’s attempting a major comeback with two new high-zoot trail bike. Can they return GT to a place among mountain biking’s elite?

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Picking The Perfect Enduro Bike: The most (and least) important components

Enduro Compare-O Feature: What spec is worth spending extra coin on? With weight less important than on XC bikes, our experts skew towards parts that improve the ride rather saving grams. So what do you do when there are two bikes you’re equally enamored with, same cost, same test ride performance? It’s time to look at components. Where should you spend a little extra? And where can you hold off and upgrade later?

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Picking The Perfect Enduro Bike: Which wheel size is right for you?

Enduro Compare-O Feature: Three wheels, no waiting: Our experts agree to disagree when it comes to wheel size in Part 2 of our three-part series, “Choosing the Perfect Enduro Bike.”

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Compare-O First Look: Ibis Ripley

It took six long years for this purported do-anything 29er to go from idea to actuality. Now it’s time to find out if it was worth the wait.

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Choosing The Perfect Enduro Bike: How much suspension do you need?

Enduro Compare-O Feature: Pro riders Aaron Bradford, Andreas Hestler, Jeremy Horgan-Kobelski, Heather Irmiger and Boulder Cyclesport owner Brandon Dwight weigh in for Part 1 of our 3-part series, “Choosing the Perfect Enduro Bike.”

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Compare-O First Look: Specialized S-Works Stumpjumper FSR EVO 29

No doubt this $9,000 silver-painted super bike will shine, but just how brightly when compared to the competition is the real question.

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Compare-O First Look: Santa Cruz 5010 Carbon

Santa Cruz’s playful all-day adventure rig looks to have plenty of climbing chops. But will the Fox 32 fork and trim-profile frame be up to the task when things get rowdy?

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Spotted: New RockyMounts Aerodynamic Upright Bike Rack

Good looks, better gas mileage, and ease of use (especially for bikes with thru-axles) were the driving factors behind the design and engineering of the soon-to-be-released Rocky Mounts Brass Knuckles.

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Factory Tour: Inside Pearl Izumi’s New HQ Building

Best Christmas present you can give a company? How about a brand new 55,000-square foot state-of-the art building complete with a fitness room, locker room, showers, and expansive indoor bike storage.

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Just In: Pearl Izumi X Project 1.0 Mountain Bike Shoe

It’s been a long time in development, but we finally have a production version of the much-ballyhooed Pearl Izumi X Project mountain bike shoes in our hands. Read on to hear about our initial impressions and what they really weigh.

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Spotted: New Moots Frosti 5” (And 29er+) Fat Bike

The latest creation from Moots is a titanium fat bike frame with spacing to accommodate 5-inch wheels — and 29er+ wheel and tires. That means you can conceivably ride it all year long — on snow, sand or dirt.

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Review: Scott’s Genius 700 Tuned Takes On The Breck Epic

Can one bike do a little bit of everything — and do it all well? We took the new Scott Genius 700 Tuned to the six-day Breck Epic mountain bike stage race to find out.

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Video: Lauf TR29 Fork – 990 Grams, 60mm of Travel

New fork has no moving parts, instead using the same leaf spring technology found in prosthetic legs.

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Eurobike 2013: World’s Lightest 29er Hardtail?

There is no UCI minimum when it comes to mountain bikes, but if there was it’s safe to say two new concept bikes from Open would be flagged illegal. As it is the pair of hardtail 29ers on display at Eurobike (one fully rigid, one with a 60mm leaf spring fork) are both under the UCI’s 6.8kg minimum for road bikes.

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Downhill Racing Returns To Crested Butte

One of the birthplaces of mountain biking is set to hold a top tier downhill race in mid September — and it will coincide with the area’s annual Chili and Beer Festival.

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Breck Epic Stage 5: Yep, That Was Epic

Thursday’s stage 5 of the Breck Epic deserves what is often an overused adjective in the fat tire world. No it wasn’t the longest stage in mileage or time. But heading up and over Wheeler Pass was indeed epic.

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Breck Epic Stage 4: Suffering and Singletrack

On paper Wednesday’s stage 4 grunt (43 miles, roughly 7,000 feet of climbing) was the bad boy of the Breck Epic’s 6 stages. There was brutal fire road climbing, brutal singletrack climbing, and one mishmash of doubletrack and narrow trail that’s known locally as Vomit Hill.

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Breck Epic Stage 2: Lessons From The Trail

Two days of the 5th annual Breck Epic 6-day cross-country stage race are in the books and there are many lessons to be learned. Here then is a point-by-point encapsulation on some of what Professor Pain and the Singletrack Savant have taught thus far here in Breckenridge, Colorado.

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