First Ride on 2010 Mongoose Khyber Super
Mountain Biking, Video
It’s been pretty rainy and just generally hectic with lots of stuff going on, but I finally got a chance to put the finishing touches on the new Khyber and get ‘er out for a ride on the local track, Aliso Woods as usual. I like trying out new bikes there because I know the place very well and it has a lot of variety. This makes it very easy to tune the bike because I know how it should feel and I have plenty of different conditions to test under.
Background – Why a Khyber?
First, a little background on the bike. Right off the bat for 2010 my trail bike gets stolen. We’re talking New Year’s eve and someone steals my rig. Total bummer. Luckily I have good insurance. I conjured all my receipts and ran a depreciation analysis and submitted them with my claim. I was sorted in a few short days. Take note here: get good renter’s or home owner’s insurance if you value your gear.
While I was waiting for my cash, my brother spotted a 2010 Mongoose Khyber on www.socaltrailriders.org. Turns out it was a buddy of mine selling it. So, I got a chance to check out the bike in real life and was super impressed with the overall package–aggressive geometry like a mini-downhill bike, good weight (mid 30’s), solid build kit, excellent fit and finish, and an amazing price tag (got a bro deal). At this point, most bikes that I had looked at were going to be twice the price, but delivering little if any improvement over the Khyber. I was sold.
The Set-up
I have since made a few modifications to suit my personal preferences. First I put on a Thomson seat post in lieu of the included KS remote. This was not as much as choice as I broke the handlebar remote lever mount by over-torquing. Whoops. An upgraded replacement is on the way. I then swapped out the wheels and tires, going from Stans rims and Kenda Excavators to red DT Swiss and tubeless 2.30 Chunders front and rear (with tubes). I then swapped out the Crank Brothers Acid pedals for favorite Shimano SPD pedals. Almost done. I also threw on a chainstay protector and strategically placed Lizard Skinz carbon leathers to keep the paint in good condition and to silence any cable or chain slap. Here are some pictures of the [never] finished product:
Once I got the bike put together, I made some adjustments to the bars, the controls, and the seat to get it just how I like it. In particular, I like to run my controls pretty far in so my index finger lines up with the sweet spot of the brake levers. I also like to angle the controls a little higher for more comfort on descents. I set up my suspension to have typical sag in the front and about 35% or so in the rear. This gives the bike a nice rake in the neutral seated position. I also like to have the suspension very balanced so the front and rear deflect and rebound very evenly when applying force over the center of the bike. In addition, I like a slot bit of hop at the end of the stroke–just enough to make the bike almost leave the ground when rebounding. For tire pressure, I typically run 28 and 30 for rear and front, respectively. I increased this slightly because the Chunders are very soft and have large treads. I feel like I can get a good balance between grip and rolling resistance with this slightly higher pressure. Finally, I run my SPDs fairly loose so I can get in and out of them very easily.
The Ride
Okay, enough of that. How did it ride? Unfortunately, Aliso gets a bit sloggy after a lot of rain. The ground is gets super sticky and this is fantastic for getting good grip when riding aggressively, but it also creates a ton of rolling resistance. So, I did not feel as fast as I wanted to feel. Nevertheless, it was a great chance see how this new rig would perform.
The first thing I noticed was how cool the Hammerschmidt system was. I have ridden single chain ring set-ups exclusively for the last 5 years. I had forgotten what it was like to have a granny gear. The Hammerschmidt was very welcome when it was time to climb up the muddy trails. It shifted seamlessly and instantly and was incredibly silent except for the menacing freewheel. In the high gear it sounds like the fishing reel in Jaws. I love it. So far, I am sold on this drive train concept.
As for the performance on the descent, I was nearly immediately comfortable dropping into my favorite local trail, Rock-it (see video). The bike motored through the crud and skipped right over the rough bits. Through the main rock garden, I found the bike to be very comfortable with very little chatter or feedback through the bars. I certainly felt like the bike was skipping over the rocks and sitting in that optimal zone of being both on and off the ground somehow at the same time. In addition, the ride was remarkably quiet. I like that a lot.
In the corners this bike is amazing. The more aggressive geometry allows the rider to really drop into corners and push really hard. I am sure this is a product of spot-on geometry, good suspension and configuration, and tire and pressure selection. Sometimes I feel like I have to re-learn how to corner on a new bike, but this one was very natural and predictable. I later found out I could get away with a lot more in the corners.
Sure, charging over rocks and railing corners is all well and good, but it’s nothing if you can’t get the bike moving. The Khyber is excellent on the pedals when descending. Power transfers quite efficiently from the cranks to the trail losing very little energy to the suspension except on climbs where there is some bob. Ah, but this is easily remedied through several available on-the-fly suspension adjustments, particularly the Floodgate and compression lockout of the rear and front suspension, respectively. These adjustments coupled with the U-Turn travel adjustment can completely change the character of the bike to make it better suited to climbing. Add a KS telescoping seat post and you have a very adaptable machine.
So far, I have two rides on the Khyber and I am very happy with the performance. Time will tell if the quality of the bike will keep it running consistently, but we’ll have to see.



Last Saturday I was training for round #2 of the 2010 Southridge Winter Series and along comes Gee and Rachel Atherton, 2008 World Downhill Champions. Whoa! I couldn’t believe they were out riding our track out in Fontana of all places. It was a real treat to see how Gee rode our local track. Needless to say, it became very clear why he is among the best in the world.
For those of us that live in more developed areas lacking natural fishing holes, fresh new guerrilla tactics can be employed to land keeper sized largemouth where you may have least expected. Gear up for the night, be prepared to run, and plan to catch fish.

