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Boundary SRAM Rival XPLR eTap AXS

$2,899.00 $3,495.00

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Go Beyōnd

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.

Material

Carbon Fiber

Weight

19.5lbs / 8.85kg*
*Weight in Shadow color with Spinergy GX 700c on size medium bike.

Features

Learn more about the Boundary with the Owner's Guide

Read Boundary Stories

Components

SRAM Rival XPLR eTap AXS

Headset	Cane Creek 40 Series
Stem	FSA Gossamer
Handlebar	FSA NS Adventure Compact
Seatpost	FSA Gossamer
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 WIDE
Cassette	SRAM Rival XPLR 10-44 12spd
Chain	SRAM Rival 12spd
Bottom Bracket	SRAM Press-Fit
Tires	Panaracer X1 - 45c Brown Panaracer Gravel King SK 650Bx1.9 Tubeless
Tubeless Sealant	Stan’s No Tubes
Wheelset	Select Wheels Above
Brakeset	SRAM Rival eTap AXS HRD
Fork	Boundary Carbon, Multiple Rack/Fender/Cargo Mounts

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 Details

Frame Specs

Frame Material	Carbon Fiber
Max Tire Size	700x45c or 650x53
Headset Upper	IS42
Headset Lower	IS52
Crown Race	40mm
Front Spacing	12x100mm
Front Axle Specs	12x1.5x120mm
Rear Spacing	12x142mm
Rear Axle Specs	12x1.5x172mm
Seatpost Diameter	27.2mm
Seat Collar Diameter	31.8mm
BB Standard	BB86
Max Chainring Size	52/36t
Rotor Max Size (Front)	180mm
Rotor Max Size (Rear)	160mm
Front Derailleur Mount	Braze-on
Derailleur Hanger	Proprietary
Water Bottle Mounts	Yes
Fender Mounts	Yes
Rack Mounts	Yes
Three-Pack Mounts	Yes
Toptube Bag Mounts	Yes
Downtube Accessory Mount	Yes
Fork Offset	50mm
Rigid Fork Length	395mm

Carbon Fork

Our full-carbon adventure gravel fork is designed with performance and versatility in mind:

Three-pack mounts for water bottle or cargo cages.
Built-in fender mounts for wet weather comfort.
Fork Steer Tube Diameter: 1 1/8” to 1 1/2” tapered
Axle Spacing: 12 x 100mm
Compatible Rotor sizes: 140 and 160mm

Elevate your off-road experience with a fork that combines precision, comfort, adaptability, and style.

Size Chart & Geometry

Size Guide

Bike Geometry

Size	XS	S	M	L	XL
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˚	71.0˚	71.5˚	72.0˚	72.0˚
BB Drop (mm)	67	67	67	67	67
Chainstay Length (mm)	435	435	435	435	435
Wheelbase (mm)	1020	1021	1026	1037	1052
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
Reach (mm)	371	375	376	385	394
Stack (mm)	537	557	568	590	609

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.

Reviews

Read the Gravelstoke Boundary Review
Read the Road Bike Action Boundary Review
Read the Singletracks Boundary Review

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.

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