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Mountain Frames

Surly Big Dummy Frameset
$1,050.00
Big Dummy is a long-tail cargo bike, which means that not only can you haul a serious amount of cargo, different accessories can be added to your Big Dummy frame and deck depending on what you want to carry. Being a dedicated single-piece frame, instead of an add-on to an existing bike, it’s stiffer and resistant to torsional flex, which provides a better ride and longer lasting frame than long-tail add-ons. Like all Surly's frames, it’s made of size specific, 4130 CroMoly steel – a tube set engineered for cargo that sports lots of little touches that you’ve come to love in a Surly, like clearance for big tires and the use of common component sizes. Figure on being able to carry about 200 pounds (90kg) of cargo. The load weight, and how it’s loaded, will affect the handling somewhat. Also, plan on using gears, especially as cargo weight increases. This may seem obvious, but as you get comfy with it, you will use your full range of gears as never before. The included Dummy Rail Collars provide a secondary retention system for the rack, as well as stiffen the rack system so you can safely carry a passenger.
Surly Big Fat Dummy Frameset
$1,650.00
The Big Fat Dummy is a long tail cargo bike that took a few too many doses of growth hormones. At first glance, you might say that Surly just put bigger tires on a Big Dummy. But if you said that, you'd actually be very wrong so just… don't. Think of Big Fat Dummy as more of a second or third cousin to Big Dummy rather than a brother. They share some of the same DNA and look sort of similar, but they're two very different bikes and really only interact when they both reach for the potato salad spoon at that family reunion that no one really wants to be at anyway. Now that that's out of the way, let's get down to the nitty gritty of what makes this hulking beast of a bike tick. Surly's goal with designing a cargo bike around fat tires was to create the most stable, stiff, and traction-laden ride possible while hauling a ton of stuff. Big Fat Dummy has a longer toptube and slacker headtube than its more svelt cousin giving it a nice, predictable, and stable ride. They also used thinner, lighter tubing to construct its cargo area so while it's an overall burlier bike, there's not much difference in weight. Big Fat Dummy accepts either 10mm or 12mm axles in the rear with a spacing of 190/197mm. That big ‘ol spacing equates to one thing: tire clearance for days. Big Fat Dummy maxes out at a massive 26 x 5.25" tire.* While that large of a tire provides the most traction and stability a bike can possibly offer, it's also a lot of rubber to push and might not be for everybody. Luckily, Big Fat Dummy is also a blast to ride with 3" tires too. It uses the same 100mm suspension-corrected fork as the Wednesday, meaning if you want to add a little squishy-squishy to your ride, you can throw a Bluto on and let ‘er rip. If you intend to carry a passenger on your Big Fat Dummy, Surly requires use of their Dummy Rail Collars. These provide a secondary retention system for the rack, as well as stiffen the rack system. In addition, a stoker handlebar set up, found on tandem bicycles, is recommended as well. Make sure to check with seat post manufacturer for stoker handlebar compatibility. All Big Fat Dummy framesets and bikes ship with a Dummy deck, rails, bags, and the aforementioned Dummy Rail Collars so you can immediately start hauling cargo — human or otherwise. Big Fat Dummy is ready and willing to carry all sorts of crap — literally. It's already in use on an organic farm in Ecuador so it's likely that it's hauled some form of manure by now. *Using a 26 x 5.25" tire will cause some drivetrain limitations. For all the nuts and bolts of compatibility read Surly's blog on the subject.
Niner AIR 9 Frame
$600.00
An aluminum hardtail with the DNA of a trail bike. If a cross-country race bike met a rugged trail bike in the woods, their love child might look a lot like our AIR 9 aluminum hardtail. This bike blends the agility and efficiency of a pedal-friendly XC bike with the versatility, toughness, and capability of a rowdy trail rig. Build it your way with the AIR 9 frame-only option. The aluminum frame is ready for the best parts you can hang on it. Nearly any drivetrain you can imagine is within reach, and Boost hub spacing gives you freedom for all the wheel and tire options you could want. - 6061 Aluminum, can fit 29x2.4" or 27.5x3.0" tires - Seatpost size 30.9 (34.9 seat collar) - BioCentric 30 compatible - 73mm PF30 BB shell
Niner AIR 9 RDO Frame
$2,000.00
Our flagship carbon fiber hardtail: AIR 9 RDO. Niner's purest expression of light, stiff Race Day Optimized carbon fiber rules the racecourse. This efficient yet compliant frame makes the most of carbon's unique properties to give you the best ride, no matter if you're gunning for a podium or cruising local singletrack.
Niner JET 9 RDO Frame
$3,000.00
Looking for a bike that ratchets up the fun factor but doesn't bite back when there's work to be done? Our playful JET 9 RDO is the ticket. With Niner's [R]evolution geometry and 120mm of suspension travel, you'll float up technical climbs, blast downhills, and fly smoothly over everything else. Build it your way with the JET 9 RDO frame-only option. RDO carbon fiber keeps the platform light and stiff, Full Sleeve internal cable routing makes it easy to build, and Boost hub spacing gives you freedom for all the wheel and tire options you could want.
Niner RIP 9 RDO 27.5 Frame
$3,200.00
Our trail-taming RIP 9 RDO is available with 27.5 wheels. All the classic capability of our flagship 140mm travel trail bike, with an added dose of agility and playfulness. Build it your way with the RIP 9 RDO frame-only option. Includes FOX Float DPX2 Factory EVOL rear shock. RDO carbon fiber keeps the platform light and stiff, Full Sleeve internal cable routing makes it easy to build, and Boost hub spacing gives you freedom for all the wheel and tire options you could want. - Includes FOX Float DPX2 Factory EVOL rear shock - Seatpost size 30.9 (34.9 seat collar) - Fox Live Valve and Shimano Di2 compatible - 73mm threaded BB; 1x single chainring only
Niner RIP 9 RDO 29 Frame
$3,200.00
Our do-it-all carbon fiber 29er trail bike hits the sweet spot with 140mm of consistent, controlled CVA suspension, adjustable geometry, and increased frame stiffness. Plus it's got standover for 170mm dropper posts, long reach, and a short head tube. Build it your way with the RIP 9 RDO frame-only option. Includes FOX Float DPX2 Factory EVOL rear shock. RDO carbon fiber keeps the platform light and stiff, Full Sleeve internal cable routing makes it easy to build, and Boost hub spacing gives you freedom for all the wheel and tire options you could want. - Includes FOX Float DPX2 Factory EVOL rear shock - Seatpost size 30.9 (34.9 seat collar) - Fox Live Valve and Shimano Di2 compatible - 73mm threaded BB; 1x single chainring only
Niner RKT 9 RDO Frame
$3,000.00
This RKT 9 RDO is more versatile with a stout 120mm suspension fork and slightly slacker geometry. It's a pedal-friendly bike that's not afraid to get rowdy. With 90mm of efficient CVA rear suspension, you'll be quickest to the top of the climbs, yet pay no penalty going down. - Niner RDO carbon fiber, can fit 29x2.3" tires - Seatpost size 30.9 (34.9 seat collar) - Compatible with multiple drivetrain options - Integrated Niner SHIS IS42/28.6/IS52/40 headset - 73mm PF30 BB shell
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