Review: DSP Bighorn Adjustable Seatpost

Components Pro Reviews

Introduction by Francis Cebedo

Mtbr feels that every mountain biker should try a dropping seatpost. No other component on your bike can improve your handling and descending abilities as much as dropping seatpost will. But there are a few concerns. And the most common ones are weight, cost and durability. We got the DSP Racing post and it seems to address the cost issue as it is only $230 for the local  lever version and $250 for the remote lever version.  It also seems to be robustly built as the clamp, seals and body seem to be ready to take on a beating.  The weight  is on the heavy side of the spectrum at 600 grams.  But it is available in the 27.2 mm seatpost size and it’s good to have a beefier build when the seat tube diameter is so small.

It is quite similar to the X-Fusion Hilo that we’ve tried in the past. But the packaging and several other details are improved. One of our partners, Dennis Koh did a detailed review on it so read it below.

We’ve also compiled a list of our other Adjustable Seatpost reviews for comparison.

Seatpost Comparison Table

Product Price
DSP Bighorn $230/$250
Crank Brothers Kronolog
$300
Specialized Command Post BlackLite $275
FOX D.O.S.S. $439
Kind Shock KS LEV $395
X-Fusion Hilo 100 $250

Review by Dennis Koh

Package dropped…The  Bighorn Adjustable Seatpost from DSP Racing is finally here and in some really impressive packaging too!

Having owned multiple adjustment seatposts, expectation of any new adjustable post is high. It may seem to be picking bones, but the costs of such components are not cheap and even minor failures cause a lot of annoyance and frustration when using and or dealing with warranty returns.

Initially from pictures on the website, it looked like a chimera of 2 others in the market. But there are some interesting features mentioned like the “sensitive valve control” and their much highlighted saddle clamping/adjustability design that caught my attention. In any case, having owned and still using the Dueler shock and their Ti springs, my expectations have been on the high side, even before it arrived.

Visually

Although some parts may look similar to some other posts in the market, upon seeing the actual thing, the Bighorn is in a class of its own. A very stiff and beefy piece with a solid dust seal, and yes, the much mentioned head clamp.

It is massive and intricately machined to accept the actuation mechanism and lever. Once the cable is tightened, nothing protrudes out of it. In this regard, I already have in mind to simply mod to mud-proof the cavity without resorting to some ugly lump of anti-gunk covering.

No extra tiny bits, but everything is contained within the one piece post and you only need to thread the shifter cable through. No guessing and approximating how much cable is needed to get the correct tension. It’s very easy to install compared to other brands of hydraulic posts I’ve used.

The link between the name Bighorn and the clamp design is pretty obvious for me. It conjures up image of golden scarabs, pharaohs and pyramids.

Collar seal looks to be good, wider and higher than most other posts. That should help keep most of the grit and water out.  The air pressure guide is included in the instruction manual. Mine came per specifications at 100psi under ambient temperature. Stanchion size is of a slightly larger diameter compared to at least 2 other brands. I would think bigger confers more stiffness and less play over time…but we’ll see.

Small attention to details is apparent. A small return spring is incorporated in the lever pushing down on the actuating mechanism. This together, with the very short distance between compressing, should ensure a better return even when trail condition starts getting gritty and without the benefit of any DIY mud-proofing contraption. Some posts when getting clogged, suffer from the return stroke of the lever during rides. This leads to a loose tension in the lever and makes any attempt to work it not possible, something many of us have no doubt experienced.

The left image shows the return spring on right side of picture. The right image shows how everything is contained within the recessed cavity when in position in a rather neat Tranformer-ish looking cephalic package

Remote Lever

Remote levers, from fork lock-out controls to adjustable seat post have appeared in all shape and sizes. The Bighorn’s thumb down “gas-pedal” design is not unique. However, machined into a small footprint, together with the ergonomics it offers, it is one of the better ones in my opinion. It can be positioned really close to the control if one so chooses. Profile wise, it doesn’t extend much more than the controls I’m running, so there is little of any unsightly protrusion and lesser probability of knocking into it. An improvement could come in the form of a small section of flexible hose at the lever end. This could greatly help in the cable management for some, although it would probably add a few more grams.

Lever finishing is actually a light gun metal grey anodized hue. This should appeal to Hope fans that run components of the same color.

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  • sandwich says:

    The website doesn’t say anything about 27.2. Sad.

  • bob says:

    I took a new Kind to Snowshoe last year, it failed on my all mountain bike (26), turning into a pogo stick the first day. Glad the seller gave me a refund. Tried another brand and decided it wasn’t for me. Maybe for you folks with monster mountain but there hasn’t been anything in N. C. I couldn’t overcome with riding skill and sliding off the back of the seat. My suggestion – try one before you buy one.

  • rodrigo fajardo says:

    I believe the adjustable height seat post should be stock for every MTB at some level. we are in 2012 and this thing needs to evolve. For some of us it is a must when in downhill zone or when a difficult zone requires dripping the seat or slowing speed instead.

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