Compare: 2020 Thesis The OB1 AXS 2x

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	The OB1 AXS 2x — 650b2020 Thesis	Recommended Checkpoint ALR 42025 Trek

MSRP	$5,199	$1,799
Where to Buy	— $1 At	$1,799 At Trek $1,799 At Biloxi Bicycle Works
Category	Gravel	Gravel
Weight		21.6 lbs
	7.7	3.0
Frame	Carbon	Aluminum
Fork	Carbon	Carbon
Wheels	Aluminum	Aluminum
Wheel Size	650b	700c
Brakes	Hydraulic Disc	Mechanical Disc
Groupset	Force eTap, SRAM	Apex
Drivetrain	2 × 12 Electronic	1 × 11
Brand Site	thesis.bike	trekbikes.com
Summary	The Thesis The OB1 AXS 2x — 650b is a carbon frame gravel bike with high-end components and hydraulic disc brakes.

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Accessories

Ride Feel

Based on frame geometry and build specs.

Rider Position

relaxedaggressive

Terrain

smoothrugged

2020 The OB1 AXS 2x — 650b

2025 Checkpoint ALR 4

Other Gravel bikes

Gear Range

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

38 mph

2020 The OB1 AXS 2x — 650b

31 mph

2025 Checkpoint ALR 4

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Geometry

Specs

	The OB1 AXS 2x — 650b2020 Thesis	Checkpoint ALR 42025 Trek

Frame	Thesis OB1 Carbon	300 Series Alpha Aluminum, tapered head tube, Internal cable routing, 3S chain keeper, T47 BB, rack and fender mounts, integrated frame bag mounts, flat mount disc, 142x12mm thru axle
Fork	Thesis OB1 Carbon with SteerSafe	Checkpoint, full carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle
Bottom Bracket	Thesis 2-Piece Aluminum Interlocking	SRAM DUB, T47 threaded, internal bearing
Headset	Thesis Oversized Integrated
Stem	Thesis Ultralight	Size: 49, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length; Size: 52, 54, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: 56, 58, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length; Size: 61, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length
Handlebar	Thesis Compact Ergo Flare	Size: 49, Bontrager Elite Gravel, 38cm width; Size: 52, Bontrager Elite Gravel, 40cm width; Size: 54, 56, Bontrager Elite Gravel, 42cm width; Size: 58, 61, Bontrager Elite Gravel, 44cm width
Saddle	Thesis Endurance 148 Saddle	Size: 49, 52, Bontrager Verse Comp, steel rails, 155mm width; Size: 54, 56, 58, 61, Bontrager Verse Comp, steel rails, 145mm width
Seatpost	Thesis Ultralight 3D Forged ⸱ 1-piece 3D forged 2014-T6 aluminum quill ⸱ Micro-adjustable 2-bolt clamp ⸱ Broadly supportive lower clamp ⸱ 0 offset to match OB1's 73° seattube angle ⸱ 230g	Bontrager alloy, 27.2mm, 12mm offset, 330mm length

Groupset

Rear Derailleur	SRAM Force AXS 12spd Electronic	SRAM Apex 1, long cage, 42T max cog
Front Derailleur	SRAM Force eTap AXS Electronic
Crank	SRAM 46/33T	Size: 49, SRAM Apex 1, 40T, DUB Wide, 165mm length; Size: 52, SRAM Apex 1, 40T, DUB Wide, 170mm length; Size: 54, 56, SRAM Apex 1, 40T, DUB Wide, 172.5mm length; Size: 58, 61, SRAM Apex 1, 40T, DUB Wide, 175mm length
Shifters	SRAM Force AXS HRD Electronic/Hydraulic	SRAM Apex, 11 speed
Cassette	SRAM Force XG-1270 10-33T 12spd	SRAM PG-1130, 11-42, 11 speed
Chain	SRAM Force AXS	SRAM PC-1130, 11 speed
Brakes	SRAM Force AXS HRD Electronic/Hydraulic	Tektro C550 mechanical disc brake, dual piston, flat mount

Wheels

Rims	Hand-Built	Bontrager Paradigm, Tubeless Ready, 24-hole, 21mm width, Presta valve
Spokes	Pillar PSR X-TRA 1420 Cold-Forged Bladed	14g stainless steel, black
Front Hub	DT Swiss DT350	Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
Rear Hub	DT Swiss DT350	Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
Tires		Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40mm
Disc Rotors	SRAM Centerline XR Centerlock 160mm	Tektro, centerlock, 160mm

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