THE ultimate material
THE ULTIMATE ADVENTURE FATBIKE
Grab your Big Iron, throw on some Marty Robbins, and hit the snow or sand with this surprisingly fast and lightweight monster. Progressive geometry and UDH ready, this modern titanium steed will be your trusty companion on any snow or soft-surface endeavor. Its built around the biggest 27.5 fat tires on the market with perfectly balanced and progressive geometry to be fun on any terrain. It even won Outside Magazine’s best fat bike of the year in 2021, and we made it even better since then.
Go longer and farther.
FULLY PREPARED FOR ANY ADVENTURE
It’s been on the full Iditarod Trail Invitation 1100 mile ride to Nome several times, and even set a record for a bicycle reaching the highest point in the world in 2023 when it was ridden to 22,615ft in the Andes. Named after the famous western tune “Big Iron”, this bike is designed to be the right tool to get the job done. Whether it’s a short weekend on groomed single track or you’re heading out on a multi-day journey, the modern geometry and stiff-yet-supple titanium frame make the Big Iron the perfect choice whenever you’re pulling out the fat bike.
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Big Iron Frame Only
Regular price $2,499.00Regular priceUnit price per
Technical specifications
Geometry
| Small | Medium | Large | XL | |
|---|---|---|---|---|
| Rider Height | 5'1"-5'6" | 5'5"-5'10" | 5'9"-6'2" | 6'1"-6'6" |
| Effective Top Tube Length | 574mm | 614mm | 635mm | 660mm |
| Seat Tube Length | 355mm | 407mm | 457mm | 492mm |
| Seat Tube Angle | 73° | 73° | 73° | 73° |
| Chain Stay Length | 445-460mm | 445-460mm | 445-460mm | 445-460mm |
| Bottom Bracket Drop | 64mm | 64mm | 64mm | 64mm |
| Bottom Bracket Height | 332mm | 332mm | 332mm | 332mm |
| Head Tube Angle | 68.2° | 68.2° | 68.2° | 68.2° |
| Wheel Base | 1122mm | 1149mm | 1172mm | 1195mm |
| Head Tube Length | 116mm | 117mm | 132mm | 143mm |
| Axle to Crown | 490mm | 490mm | 490mm | 490mm |
| Fork Offset | 51mm | 51mm | 51mm | 51mm |
| Trail | 98mm | 98mm | 98mm | 98mm |
| Stack | 611mm | 622mm | 627mm | 637mm |
| Reach | 427mm | 442mm | 468mm | 484mm |
| Standover | 680mm | 720mm | 740mm | 775mm |
Frame Specs
Wheel Size |
29" / 27.5" / 26" |
Front Travel |
00mm min / 100mm max |
Rear Travel |
00mm |
Hub Spacing |
197x12mm spacing |
Axles |
226mm x M12 x P1.0 Axle |
Seatpost Diameter |
31.6mm, 34.9 seat clamp |
Max Seatpost Insertion Depth |
SM 230, MD 220mm, LG 240mm, |
Rear Tire Clearance |
29 x 3.0" max, 27.5 x 4.5" max, 26 x 5.0" max |
Bottom Bracket |
Threaded 100mm BSA Standard |
Max Chainring |
34t max, 76.5 Chainline |
Headset |
IS42 Upper / IS52 Lower |
Bottle Bosses |
4 sets for MD - XL frames |
Sizes |
S / M / L / XL |
Suspension
The Details
Design Features
Cold-formed 3/2.5 titanium tubing
Our modern take on traditional titanium- these tube shapes optimize stiffness and compliance
CNC Machined 6/4 Titanium Parts
Headtube, BB, dropouts, and inserts
Internal Cable Routing
Clean, quiet, and simple
Threaded BB
Simple, easy, functional.
Sliding UDH Dropouts
Future proofing for all drivetrains and chainstay length adjustability.
Rack Mounts
All standard rack and fender mounts
Tappered Headset
IS 42/52 integrated headset for easy installation.
Support
We do now! Well, in a way, we always have… our sister company, Why Cycles, has been manufacturing the most advanced titanium bikes in the world since 2016. We're retiring the Why Cycles brand, so now you can find the most advanced carbon and titanium bikes on the market under one name - Revel Bikes.
Revel titanium frames are lovingly hand-built in the same family-owned and operated factory in northern China used by Why Cycles for a half-decade. All Revel bikes are then assembled and shipped from our facility in Carbondale, CO.
Most! Max clearance 27.5 x 4.5″ tires, 26 x 5.0″ tires or 29 x 3.0″
We love the bags we've seen and used from companies like Rogue Panda, Oveja Negra and Good Busy Gear.
Yes! Check with Rohloff for specifications.
Yes! Check with the belt drive manufacturer for specifications.
Yes! Check with the belt drive manufacturer for specifications.
We recommend using some rubbing alcohol and a Scotch Brite pad and scrubbing gently in a "shoe-shine" motion (one direction or back and forth, not circular), then wiping down and finishing with a light coat of furniture polish like Pledge. This should work for both oxidation and light scratches. The graphics are sand-blasted into the frame, so you won't hurt them if you use a soft touch.
15-18Nm for the dropout bolts, 3-4Nm for the tensioner bolt
M5x0.8x35mm Stainless steel cap screw
We've updated all Revel Ti bikes with SRAM UDH (Universal Derailleur Hanger), so replacement hangers are easier to find and your bike's drivetrain is more future-proof against manufacturer updates down the line.
Absolutely! All Why Cycles and Revel Bikes frames come with lifetime warranties and a generous crash replacement program for the original purchaser. If anything does happen and you need a replacement frame, it will most likely be replaced with a Revel branded titanium frame, but we’ll get you back to riding ASAP!