Boundary Gravel Bike
Boundary SRAM Rival XPLR eTap AXSSize Guide
A rugged and dependable gravel bike ready to kick up some dust as you redefine what’s rideable. The Boundary has the geometry of a road bike with the heart and handling of a trail bike so you can rumble confidently across all kinds of mixed terrain.
According to the Federal Highway Administration, there are 1.4 million miles of unpaved roads in the U.S. just waiting to be explored—and we haven’t even looked up the international mileage. So take the roads less traveled, or the ones that don’t even show up on the map. Are you ready to push your boundaries?
This Bike Is For You If...
You're looking for an epic carbon-fiber gravel bike that won't break the bank. You'll be able to run 700c or 650b tires with plenty of clearance, install up to three water bottle mounts and racks in the front and rear.
You're ready to take your riding to the next level and race in any gravel event. In 2019, the Boundary made its fast debut by placing 3rd at the Unbound Gravel 100.
*Max packed out weight — 300 lbs.
19.5lbs / 8.85kg*
*Weight in Shadow color with Spinergy GX 700c on size medium bike.
Learn more about the Boundary with the Owner's Guide
SRAM Rival XPLR eTap AXS
|Headset||Cane Creek 40 Series|
|Handlebar||FSA NS Adventure Compact|
|Saddle||WTB Volt Medium Steel|
|Shifters||SRAM Rival eTap AXS|
|Rotors||SRAM Centerline X 160mm|
|Rear Derailleur||SRAM Rival XPLR eTap AXS 12spd|
|Crankset||SRAM RIval 1x 42T 12spd|
|Cassette||SRAM Rival XPLR 10-44 12spd|
|Chain||SRAM Rival 12spd
|Bottom Bracket||SRAM Press-Fit|
Panaracer Gravel King SK 700x43c Tubeless
Panaracer Gravel King SK 650Bx1.9 Tubeless
|Tubeless Sealant||Stan’s No Tubes|
|Wheelset||Select Wheels Above|
|Brakeset||SRAM Rival eTap AXS HRD|
Boundary Carbon, Multiple Rack/Fender/Cargo Mounts
*COVID availability advisory: Due to high demand during COVID-19, our industry is working hard to keep up with all parts, components and accessories. Your purchase may include unavailable parts. At that point, we will replace them with equal or better parts. Please reach out via LiveChat or email if you have any questions.
Bar, Stem + Crank Specs
|Size XS, S||Bar: 40cm; Stem: 90mm; Crank: 170|
|Size M||Bar: 42cm; Stem: 100mm; Crank: 172.5|
|Size L, XL||Bar: 44cm; Stem: 110mm; Crank: 175|
|Frame Material||Carbon Fiber|
|Max Tire Size||700x45c or 650x53|
|Front Axle Specs||12x1.5x120mm|
|Rear Axle Specs||12x1.5x172mm|
|Seat Collar Diameter||31.8mm|
|Max Chainring Size||52/36t|
|Rotor Max Size (Front)||180mm|
|Rotor Max Size (Rear)||160mm|
|Front Derailleur Mount||Braze-on|
|Water Bottle Mounts||Yes|
|Toptube Bag Mounts||Yes|
|Downtube Accessory Mount||Yes|
|Rigid Fork Length||395mm|
Size Chart & Geometry
|Top Tube Length (mm)||520||535||550||565||580|
|Head Tube Length (mm)||120||140||150||170||190|
|Seat Tube Angle||74.5˚||74.0˚||73.0˚||73.0˚||73.0˚|
|Head Tube Angle||70.5˚||
|BB Drop (mm)||67||67||67||67||67|
|Chainstay Length (mm)||435||435||435||435||435|
|Front Center (mm)||594||595||600||611||626|
|Standover Height (cm)||75.9||78.6||80.3||82.3||84.3|
|Fork Axle to Crown (mm)||395||395||395||395||395|
|Fork Rake (mm)||50||50||50||50||50|
|Seat Tube Length (mm)||490||520||540||560||580|
Shipping & FAQ
Shipping & Delivery Options
Obed bikes ship pre-assembled factory direct to your doorstep with a super simple setup process or delivered fully built by a technician. Learn more about our Domestic and International Shipping & Delivery Options.
Have more Shipping Questions? Check out our frequently asked shipping questions.
What should I do if I am between on two sizes?
If you can achieve your required seat height with both bikes sizes, then you can pick based on your riding preference or style. The smaller frame will be more nimble while the larger bike may feel higher and faster. LiveChat with us or email us for help finding the right size.
How do I mount accessories onto my Obed?
Our Baseline and Boundary models have various mounting points for a multitude of accessories available on the market.
For nutrition and hydration, our water bottle and top tube storage mounts can be used with most 2-hole accessories designed for M5 x 0.8mm mounts spaced 65mm apart. The screws provided with the frame are 10mm long and should be replaced with longer screws should your accessory mounting bracket be more than 3mm thick.
At the rear of the bike, we have provided fender and light rack mounting points. Unlike many metal bikes which may have open ended mounting points, our carbon fiber frames have closed end mounting points. This requires special attention to the length of screw when mounting racks and fenders with various thickness attachments. Should the accessory mounting point be more than 2mm thick, source screws that are 10-13mm longer than the thickness of the item you’re attaching.
For fork mounted accessories, the same rules apply as mounting to our seatstays and dropouts.
We recommend a 20lb load weight limit.
What is your Return Policy?
Put your new bike to the test with our 30 day return policy. If it's not for you, just box it up the way you received it and contact our support team for further instruction.
Up Close and Personal
There's an OBED for You
It doesn’t matter if you’ve been riding for years or a few months — we all crave that feeling of freedom that grows stronger with every turn of the pedal crank.
Keep chasing that feeling on one of our rugged and refined steeds specially designed for gravel, road, or mountain adventures.All Bikes