BOS suspension is a small French
outfit nestled at the base of the
Andorra mountain range. The company has not enjoyed much of a following in North America, but it’s certainly
not because of poor performance. In
fact, Bos’ high-end suspension products
have been used by some of the fastest
European riders, including Nicolas
Vouilloz. With two all-new distribution forces here in the U.S., BOS is sure
to pop up on the American mountain
biker’s radar in the coming season.
The Deville is the
most versatile fork in the BOS line and
is designed to appeal to the growing
number of enduro riders. The Deville
is a 6.3-inch-travel, air-sprung fork
with 34-millimeter stanchions and
chassis, and a 20-millimeter thru-axle.
The fork uses a cartridge-style damper
with rebound and separate high- and
low-speed compression adjustments.
Our test fork tipped the scales at 4.6
pounds. The Deville retails for $970
and is currently available through two distributors in the U.S.Prestige Mountain Bikes and ShockAndRollCycles.com.
Field test results:
Right out of the box, this fork proved plush and smooth. We Were tackling the gnarliest
all-mountain trails right away. Still, it
took a few shakeout rides to determine
the best settings. This is not a bolt-on
upgrade that allows riders to just turn
some knobs and hope for the best. There
is a wide range of adjustment, and small
changes make a big difference. This
fork needs a savvy suspension tuner
to extract the most from it, so if you’re
planning to ride a BOS, learning the
basics of “suspension bracketing” is
an absolute must. This is a cartridge-damped fork, but it is reminiscent of an
open-bath system simply because the
cartridge feels like it moves a lot of oil.
Our initial setup, with all the dials
right in the middle, tended to dive
under pedaling and braking forces. We
increased the low-speed compression
damping several clicks and immediately
felt a difference. In fact, we went past
our ideal setting. We settled back a few
clicks and never touched the adjustment
again. We set the high-speed compression and rebound damping the same way. Once we landed on our ideal settings, the Deville was nothing short of
amazing. In rock gardens and technical
sections, it was evident that steering
precision and stiffness were key design
goals for the chassis. While the 20-millimeter front axle might add a bit of
weight to the casting, it’s definitely
there for a reason.
This is a lightweight fork, but it’s not
as light as some of the other choices
in this category. Compared to the Fox
Float 34 we swapped out, the BOS
Deville weighed about a 1⁄4-pound more.
BOS recently dropped their prices
to compete with all the other very
capable forks out there, which makes
BOS much more affordable than it was
just a few months ago. If you’re seeking a plush ride and open-bath-damper
feel, the Deville may be right up your
alley—and now you won’t have to pay
a premium to get it.
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