Steel frame and 29-inch wheels are a combination that doesn’t happen too often these days. Back when I started mountain biking, steel frames were the only option, but now there are a myriad of other frame materials–titanium, scandium, aluminum, carbon fiber or whatever else comes along. But, the old saying “steel is real” lives on with cult-like fervor among those who know.

Apparently, Rocky Mountain Bicycles has been a closet “steel is real” groupie all these years… who knew? What with all those handmade aluminum framesets all these years, they sure did a great Jedi mind trick on us, didn’t they. A 29er, steel-framed Rocky Mountain bike? This I had to test.

Rocky Mountain Hammer29 29er Mountain Bike Review

About the Rocky Mountain Hammer 29

In its first season, the Rocky Mountain Hammer 29 has a lot to offer in an economical package. Boasting old-school Reynolds 725 chromoly steel tubing, a compact frame design and the Eccentric bottom-bracket for simple single-speed conversions if you’re into that kind of pain.

The compact frame design provides shorter tube spans and Rocky-esque standover clearance. The pedestrian component spec provides good value but isn’t flashy by any means.

Hammer 29 Specs

  • Tubing: Custom-drawn Reynolds 725 steel tubeset
  • Fork: Fox 32 F29 RL w/100mm travel
  • Drivetrain: Primarily Shimano Deore with XT deraileur and RaceFace Evolve cranks
  • Wheels: Shimano M525 hubs laced to WTB Speed Disc rims
  • Brakes: Avid Juicy 3 discs (160mm f/r)
  • MSRP: $1999

Rocky Mountain Hammer29 29er Mountain Bike Review

Real steel with big wheels

My first glimpse of the Hammer 29 was at Interbike Outdoor demo as legendary freerider, Wade Simmons carved out the Bootleg Canyon singletrack aboard this orange beauty. If he could rally on a steel hardtail with a smile on his face–given the fact that he typically rides a super-squishy Rocky Mountain Flatline–then there must be something about this bike, I thought to myself.

I didn’t have a chance to ride the Hammer until early this Summer, but it’s been a ton of fun once I got past the hardtail transition.

That hardtail transition is a reality for me and anyone who has exclusively ridden a full-suspension bike for many years. For me, it’s been 10 years since I rode a hardtail for any real length of time. So, needless to say, the first two rides were a lesson in mountain biking 101, which kind of threw me for a loop. Pretty funny, I know.

Lets talk about the spec for a bit and then return to the trail. For the money, this is a solid deal for a unique bike. Starting out with the Reynolds steel tubing for a compliant ride, the rest of the bike is rounded out with a solid wheelset, a worthy Fox 32 F29 RL fork, a workman-like drivetrain and solid components throughout. If you’re looking for an easy way into the 29er or singlespeed fray, this is a great option.

The frame design is compact for a variety of reasons: 1) to keep the center-of-gravity low, 2) to minimize the tube lengths to control the flex, 3) to expose more seatpost for extra compliance and 3) increase standover. While I typically purchase a mountain bike purely based off the top-tube measurement (23.25-23.75″ for me), the Medium-sized Hammer 29 is right on the edge of fit for me due to the seatpost extension. I’ve got about 1/4″ of extension left in the seatpost at climbing height with the 23.74″ top-tube found on the Medium. If my legs were a titch longer, I’d have to step up to the next size frame, which would create an elongated cockpit.

Rocky Mountain Hammer 29 29er Mountain Bike Review

Hopping aboard, I’m convinced that the only hardtails for me are of the big-hoop variety and the steel frame on top of that is gravy.

The Hammer 29 is a 29er that’s built Rocky-style. I’ve found it to be a capable, but not outstanding climber. It holds its own and did propel me to my best time yet up the Clark’s Trail Time Trial, but it still felt a tad sluggish. Standing climbs are efficient with no energy-robbing rear suspension, but it is a balancing act to keep the rear wheel in contact with the dirt–too much weight forward and you’ll spin out the rear tire. Once I figured out that balance, I was able to stand and maintain precious momentum on long climbs.

29er wheels are excellent at rolling over and through rough terrain and the steel hardtail adds to the softening of harsh bumps, but this is no full-suspension or even a soft tail. Riding down rocky, technical singletrack will quickly bring you back to reality as you bounce around rock gardens. While you will get bounced around in rocky downhills, this bike remains a super-capable descender on fast, rolling singletrack. The angles are well-suited for technical, twisty dirt ribbons.

One thing to keep in mind is that with the larger contact patch, there’s no need, or ability to lean the bike and angulate into corners like you do on a 26er. That extra 3-inches in diameter makes a huge difference in cornering traction and the Hammer 29 hooks up well.

While the Hammer 29 is an excellent value, it does leave a bit to be desired in the fork and drivetrain. The OEM Fox F29 RL isn’t as plush and doesn’t offer the adjustability of the aftermarket F29 RLC or a RockShox Reba 29er and the mostly-Deore drivetrain shows its limitations under load, but it does the job.

Rocky Mountain Hammer29 Bike Review

Good Hammer 29

  • Inexpensive entry into 29er market
  • Steel is real… compliant and soft to take the edge off
  • Rocky-esque handling… capable descender on smooth and fast trails
  • Climbs well once you get the right balance for standing climbs
  • Can easily turn it into a singlespeed, if you like that type of punishment
  • Solid WTB/Shimano M525/DT Swiss wheelset tracks very well
  • Frame design offers low center-of-gravity
  • Tons of standover clearance

Bad Hammer 29

  • So-so parts spec, but good for the money
  • Rocky descents remind you that it is a hardtail afterall
  • Avid Juicy 3’s are OK, but I’d prefer a 185mm front rotor for a little more power
  • Entry-level fork gets the job done, but would be on my upgrade shortlist
  • Be careful not to extend the seatpost too far

The Bottom Line: Rocky Mountain Hammer 29

Looking for a unique 29er hardtail? The Rocky Hammer 29 is a solid performer as a single-bike quiver or as a 29er playbike. The steel frame is lively and the wheels are solid. Everything else performs well, but could be upgraded over time.

Buy Now: Find a Local Dealer

About Author

A Seattle native, Jason developed a love for the outdoors and a thing for mountains. That infatuation continues as he founded this site in 1999 --sharing his love of road biking, mountain biking, trail running and skiing. That passion is channeled into every article or gear review he writes. Utah's Wasatch Mountains are his playground.


  1. No offense to the ladies, but it looks like a cheaper ladies bike you get from the Trek dealer. Maybe that center of gravity is necessary, but not on the 29er I’ve looked at. Those big tires rule it for xcountry.

  2. Jason Mitchell on

    I suppose everyone is entitled to their opinion, but that frame in no way looks like a girls bike–there are no pink tassles at the end of the bars. That’s how I know. 🙂

    Just an FYI, the same type of bike in a 26er wouldn’t have such a sloped top-tube because it would have 3-inches less height to deal with.

  3. Hi Jason,
    I was wondering how tall are you? The reason I’m asking is because I’m really interested in getting one of the Hammer 29ers and after reading that you go based on TT length, I’m caught as to what size I should get. I’m 5’8″ tall and ride 17″ to 18″ frames in the 26ers so should I get a 16.5(med) or go small with the 15.5 size frame???
    Your advice would be greatly appreciated!

  4. Steve

    I think you’d likely want a Medium. A Small would likely be really short for you. Do you know the TT measurement of your current bike? Do you prefer a more upright stance or a more racer-type stance? Either way, the Medium should be the right size for you with small adjustments available via stem or seat location adjustments.

  5. Jason,
    My current bike is an 18.5 RM Blizzard with a 23.1(585mm)TT…but it’s always felt kind of big. When I first bought it with all the stock parts I had a very racer/xc stance, but ever since I upgraded to a 100mm fork and put some extra spacers on the longer steerer tube, its brought my stance more upright and it feels great! Almost like a new bike! I’m much more comfortable on longer rides and my lower back certainly appreciates it! So to answer your question, I think I would prefer a more upright stance. Which leads me to the next question…do you happen to have the geo on the 15 and 16 models? I went to the RM site recently and couldn’t find the info on last years bikes. If you could get me that info it would certainly help me.
    Thanks again for your help!

  6. Augh! I got the new frame, love it. I am cannibalizing my too small 29er frame to my new Hammer29 frame. Only part that doesn’t fit my Hammer is my down-pull XTR front derailleur. I am looking for the correct XTR front derailleur for the Hammer 29. I know it needs to be top pull and 28.6mm. Please help out.

    I am actually looking into ebay for previous generation XTR (one without large “X” logos on it and it’s not black.)

    Many Thanks!


  7. It does! Thanks but one thing, what derailleur is that? Looks like an XT. Cannot find an XTR like that. Could you direct me to which XTR front derailluer model, please? (Needs to be a previous generation XTR, without the large “X” logo on it.) My bike is the same size as yours.

    Anyway, I just sat on my Hammer29…. fits like a glove, NO TOE-OVERLAP, weeeeee!!!


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