This article is part of the Mtbr’s Enduro Compare-O. See all the stories in this special section here–http://reviews.mtbr.com/category/enduro-compare-o-2014
The all-aluminum Orbea Rallon stood out from our 20-plus bike test fleet for a number of reasons. First, it was one of the few all-aluminum bikes in the test. Second, it had a unique BOS front and rear suspension system specially designed for the Rallon. And third, its curb appeal was undeniable.
“Punk rock, rowdy, in your face Euro trash style going on with this whip,” said one rider. “Absolutely love the loud yellow Mavic Crossmax Enduro wheelset. Everyone who came back from riding this bike had an ear-to-ear grin on their face, so I figured it must be worth a try.”
Once we swung our legs over the Rallon, we noticed that the frame has quite a long top tube. Orbea confirmed that sizing runs on the large size, with a couple 6-foot-tall riders fitting perfectly on the medium size frame.
Rallon on the rise
Climbing up Sulphur Springs fire road, riders seemed satisfied with the way the Rallon ascended. The steep 74.5-degree seat tube angle puts the rider in a forward pedal-friendly position good for technical climbing.
Photo by Tyler Frasca.
“The BOS suspension didn’t have any lockouts like the FOX CTD system, but even with the suspension set fully open, the bike climbed quite well with minimal pedal-induced bob,” commented on test rider. “Not quite as quick feeling uphill as the Mojo HDR or even the Bronson for that matter, but still felt eager despite its 30 lb. weight with XTR pedals.”
Another rider had a few issues with pedal strikes through more technical climbing sections due to its rather low 13.3-inch bottom bracket height. Pedal strikes were also a slight issue on downhill sections as well, forcing riders to be mindful of crank angle and pedaling through corners, especially with the rear suspension compressed. It should also be noted that the test bike only had 170mm long cranks, which would make pedal strikes with 175mm cranks even more common.
Railin’ the Rallon
The Orbea Rallon was created specifically to rule the Enduro World Series circuit, and unlike most bikes that design suspension around suspension leverage rate, the Rallon Advanced Dynamics suspension was designed alongside BOS to control 160mm of rear travel through shock tuning. This gives the BOS Kirk rear shock much more influence on the feel of how the Rallon descends.
With separate rebound, high- and low-speed compression settings, the BOS Kirk shock is incredibly tunable, which might be intimidating for some who just prefer a set-and-forget mentality. For those, the Rallon can be equipped with the FOX Float CTD shock. With the BOS Kirk shock matched to the 160mm BOS Deville front fork, it gave the Rallon one of the most balanced feels of any bike in the test.
With a minor turn of the eccentric shock mount hardware, the Rallon can adjust bottom bracket height up to 7mm and angles by a half-degree depending on terrain. A concentric pivot at the rear 12×142 axle makes for a super stiff overall chassis as well as stronger and quieter braking. All of these innovations help the Rallon absolutely shred when gravity calls. Once pointed downhill, the Rallon displayed as much attitude in action as it does at rest, with one rider singing its rowdy praises.
Photo by Tyler Frasca.
“I couldn’t stop hooting and hollering on this bike,” one rider effused. “It’s capable and willing to be hucked off anything and feels burly as brass balls.”
With its unique suspension design and 160mm of travel, the Rallon soaked up brake bumps and rough sections of trail with the smoothness of a 29er. In sections where other 27.5-inch bikes like the Ibis Mojo HDR had difficulty staying composed, the Rallon charged through without hesitation.
Another unique aspect of the Rallon is its purposefully mismatched front and rear wheel/tire combo. The Mavic Crossmax Enduro wheelset features a wider front rim and blocky Mavic Charge 2.4-inch tire paired to a narrower rear rim and a lower-profile Mavic Roam XL 2.2-inch tire. This intentionally unorthodox combination made the Rallon oversteer into corners, encouraging riders to slide it through turns. Its exceptionally short 16.5-inch chainstays—the shortest of any bike in our test—helped the Rallon turn with superior eagerness and agility.