STIFF, AGILE, MANUVERABLE ON SINGLE TRACK, GREAT HILL CLIMBER, BEAUTIFUL TO LOOK AT. A ONE OF A KIND, CHICS DIG IT, SMOOTH AND FAST.

ABSOLUTLY NOTHING!!!!

I HAVE TRIED THEM ALL AND HAVE NEVER IN MY LIFE EVER ROAD ANY FRAME AS FAST AND AGILE AS THE BOH FX. I PURCHASED THE COMPLETE BIKE USED FOR ONLY $500.00 AND IT BLOWS AWAY ALL OTHER HARDTAILS WHICH WOUKD HAVE COST ME THOUSANDS MORE. HERES SOME ADVICE SELL YOUR HARDTAIL AND BUY A MRAZEK. WWW.MRAZEK.COM.

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LITESPEED, DEAN, KESTRAL, ALL THE TOP OF THE LINE FRAMESETS.

Silver FX. Gorgeous! Light, accelerates, climbs, very flickable in the tight stuff, very compliant frame. Gorgeous!

None.

Did I mention this bike is gorgeous? I have had it less than a week but am totally impressed. This is one sweet riding bike. Very compliant. Mine is an 18 inch frame and I am 5'11" at 170 lbs. The bike is pure joy to toss around in the tight stuff, climbs like a cat. This is the one have for the technical trails. The silver paint sparkles in the sunlight and the bike comes alive. Everyone remarks on how sexy it looks. Everything else looks dull in comparison. Goes like it looks too.

Great shape. Endless "jealous" factor. Stiff and climbs great.

28.6mm seat post, but who cares.

Haven't had the bike together long enough for a fair assessment but I'm riding between rain storms. Not any complaints yet. The frame is a '95 Unity HT and it is identical to the brand new ones except for the seat tube size on the inside, it's 28.6. I'll post an update when I get a few hundred miles on it.

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Schwinn (Home Grown, Moab and Mesa), several other aluminium hard tails.

Stout. This bike will NOT break or fatigue. Example -- I drove into the garage with it on top of the roof rack. The roof rack was actually pulled of my car, but nothing happened to the bike - I'm still riding the dang thing 2 years later. The frame is super stiff with absolutely zero flex at the bottom bracket. It climbs like a goat. Once the front wheel is over the rear wheel follows without any coaxing. The best part about this frame is that there is not chain slap on rocky downhills and as a bonus chain suck is impossible. Oh yeah, it looks good too.

I found it difficult to go downhill, especially the steep stuff. Could be that I got the medium size frame and I had to use a longer stem than what I thought would be optimum. I'm 5'11" and on their website they recommend the medium size frame for my height. I think the cockpit is a bit tight. Also the paint started to buble around the headtube and at 4.5 lbs. it is slightly heavier than what you can find on the market at this price now a days, but since I weight almost 180 lbs. myself an extra pound on the frame doesn't make much difference.

If you break bike frames. If you like going uphill. If you want to get rid of that annoying chainslap and chain suck. If you don't mind carrying 1 extra pound on the frame. If you like a unique bike. This frame is for you. Remember, the cockpit is a bit short, so if you're an inch or two from getting the next size bike, just get the next size bike.

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Cannondale F600, GT titanium, Peugeot, Gary Fisher Tasajara, Diamond Back V-link, Nishiki.

Customer Service, craftmanship, handling, unique appearance, finish, the ride...

None, IMHO.

The bottom line is you cannot own a more unique hardtail that feels so dadgum 'right' and looks so good, period! I was fortunate enough to twice demo a buddy's Boh FX and that was all it took for me to decide to use this frame as the base for my dream hardtail (which will see some racing service, but mostly epic XC rides). I demo'd some sweet bikes: Kestrel, Fuel 90, Sugar 1, RM Element Race, STP. All had at least one feature that called attention to itself while riding. However, when I rode the Mrazek it became 'transparent' beneath me, it was just there when I needed it, but never got in my way. It's an excellent single-tracker, very nimble and responsive, almost intuitive, yet stable at speed, despite what some of the rags' reviews have said about its fire road surefootedness. It climbs like a banshee, thanks to the elevated chainstays and super-stiff frame; the downtube and top-tube employ some trick ovalization to firm up an already-tight frame. The slack seat-tube angle creates a comfy cockpit for riders with longer torsos. Being 6'1", 160lbs I was concerned that an aluminum hardtail would be too rough a ride for me, but my fears were unfounded for the bike is smoother over the stutter-bumps than my old chromoly hard tail is. There's definately compliance at work with the elevated chainstays. Some might say that its heavy at 4.3lbs, I was somewhat concerned of that as well. I have estimated that I'll be able to build the bike between 23-25lbs without spending tons of cash to do so, weight will not be an issue.
Last of all, Jeff Burnard at Mrazek is an absolute pleasure to buy a bike from! Between numerous e-mails and an hour-long phone call he patiently answered all of my questions, some silly, and laid to rest all of my pre-buy concerns, all while he was in the middle of preparing to move to Japan! (Don't worry, he's still with the company and can be contacted via e-mail). He personally saw to it that my frame made it to me before the Christmas rush, and has not forgotten me just because he made the sale. He genuinely wants me to stay in touch to let him know how the ride turns out; he's a great guy and I hope I get the pleasure of riding with him some day. It's a good feeling to know that the bike company you bought your frame from knows you by name and will take care of you regardless.
Buy this frame if you want a fun (that's what it's all about anyhow right), unique, durable, competent hardtail.

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The only elevated chainstay straight-gauge aluminum Czech hard-tail on the market that I'm aware of...

Beautiful, fast, great climber, comfortable and smooth

tough to fit water bottle in cage, not a big deal at all

Unbelievable bike!!! Corners and jumps like a BMX bike. Its a great climber, front end gets over anything. Really smooth on decents, especially on fast downhills. The elevated chainstays are gret to have, limiting clang of chain slap. Okay, so it doesn't get an inch of flex out of the rear, but the relaxed seat tube angle results in seatpost flex (so get a thompson, something long and strong) which makes the ride softer. It is probably the smoothest looking bike I have ever seen.....its a work of art! The boys at Mrazek are great to work with, they will help you in every way possible, and usually hook you up with some great deals. More than worth the money!!!

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Nothing is similar to this bike, but used to ride Specialized S-Works

Everything, for a nice smooth ride. Looks!!!

Paint scratches easily

Best hard tail. Smooth strong and styling. Never had any problems and good dealings with mrazek bought 2 bikes for friends since.

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Pacific aluminium HT
Proflex attack = same amount of travel
Proflex K2 5000

EXOTIC LOOKS, PSEUDO REAR SUSPENSION, GREAT CLIMBER.

WEIGHT- 4.4lbs FOR 16 FRAME, TOTAL WEIGHT OF BIKE IS 26.4lbs. THE JEALOUS LOOKS YOU GET, AS ONE GUY SAID NICE SCOOTER.

THIS BIKE RIDES GREAT!!!!!!! IT'S QUITE STIFF FOR CLIMBING, ACTUALLY I CAN GO ON A TALLER GEAR. THERE IS REAR SUSPENSION, BUT DON'T KNOW IF IT'S COMING FROM THE REAR OF THE FRAME OR SEATPOST OR TI SADDLE OR A COMBO OF ALL THREE. NOT AS HARSH AS MY GT AVALANCHE, IT DOES TAKE TO SMALL/MED HITS NICELY. THE SMALL (16) FRAME FITS LIKE A MEDIUM IN OTHER BRAND OF FRAMES. I INSTALLED A RF XY SEATPOST TO PUT MORE WEIGHT IN THE BACK OF THE BIKE, THIS I THINK REALLY HELPS WHEN ASCENDING. IT FEELS LIGHTER WHEN RIDING THAN THE 26.4lbs MONSTER THAT IT IS. TALK TO JEFF AT MRAZEK, HE HELPED ME SET UP THE BIKE PERFECTLY FOR ME. IT REALLY IS AN EYE CATCHER. MRAZEK, MY HAT OFF TO YOU FOR MAKING SUCH A UNIQUE, FUN TO RIDE FRAME!

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WEIGHTHMMMMM, I DON'T THINK THERE ARE THAT MANY ELEVATED CHAINSTAY FRAMES. IT SURE AIN'T NO DIAMOND FRAME.........

Tough really though

BB height clearance

I bought a Mrazek full suspension bike just about 2 months ago. I ask Mrazek to change the rear shock to the stratos helix pro 6.5 travel. With conjuntion, I use the Marzocchi Monster T in front and guess what. This bike really kicks ass. The BB height clearance is high thus making it difficult for me to get up my bike, but when I am on the bike, taking sharp corners at high speend ( 70 - 80 km/h ) , I can feel that the whole bike is so stable. Didn't flex so much, the positioning of the rear and front shock angle is just right, thus making the tires sticking down onto the rough terrains. The swing arm of the bike is have some extra mounting to change the rear shock angle. The bike is really tough. Going downhill at the speed of around 70km/h, a big stone flew up and hit my frame. Guess what?? No dents. The paint job is really exellent. So what you guys waiting for, get this beauty now.

Bought an FX a bit over a year ago as a back up bike to a GT LTS 3000 and immediately made the GT the back up. The FX is light, stiff,FAST and different!The front end is so light you can pop it up and over just about anything. Liked it so much we got one for my brother and then 6 months ago purchased an FS which is just as great as the FX. It's great to have the only ones in the area too, everyone wants to talk about 'em.

Never did find that inch of travel on the hardtail which can make the rooty/rocky trails in South FL a bit rough. Rear disk mounts are not drilled on the FS and a bear to do yourself.

You can't go wrong with a Mrazek - even with the price increase they are well worth it. Jeff is great to work with. They can put a very reasonable parts group together for you too. 5 Jamaican Insanity Peppers for both my toys. Now if Dad Mrazek will just finish tinkering with the road frames.....

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GT LTS 3000,Mongoose Hilltopper SX (if you're the one who stole it I cut the fork too short for the stem - so watch out on the bumps)