How to Choose a Gravel Bike
Co-op Cycles ADV 2.1 Bike
$648.93Compared to $1,299.00* Save 50%
Built for rides that keep going after the pavement ends, the Co-op Cycles ADV 2.1 bike is equipped with a full carbon fork, clearance for 45 mm wide tires and fenders, and plenty of accessory mounts.
Key Details
Wheel Size
700c
Number of Gears
18 gear(s)
- Stable but lively, gravel-forward 6061 aluminum frame features a full carbon fork, internal cable routing and plenty of accessory mounts
- Multiple accessory mounts let you fit everything you want to carry; mounts include under/over triple on down tube, under/over double on top tube, and triple on both fork legs
- Also features fender/rack mounts on seatstays and a fender mount on the chainstay bridge
- Spec'd with 700c x 45 mm tires; also compatible with 650b wheels and up to 45 mm tires with fenders (not included)
- Offered in 5 sizes for heights 5' to 6'3"
- 12 mm front thru axle, 12 mm rear thru axle and SRAM UDH (universal derailleur hanger) for universal repairability and lateral stiffness
- Frame is compatible with a 27.2 mm diameter dropper post (not included)
- WTB gravel saddle with relief section
- Durable WTB double-wall rims are tubeless-ready for riders who wish to upgrade to a tubeless tire system
- Tektro dual-piston mechanical disc brakes with compressionless housing for confident, low-hand-force braking
- Co-op Cycles gravel-flare handlebar with shockproof pinhole tape provides multiple hand position choices and vibration damping
- Shimano Sora 2x9-speed drivetrain offers a wide range of gearing to tackle varied terrain
- Pedals not included
- NOTE: Specs and images are subject to change based on component availability
Imported.
This bike comes with Coast to Coast Support, which includes:
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
View the Co-op Cycles ADV Product LineView all Co-op Cycles Gravel Bikes- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Gravel Cycling Road Cycling |
|---|---|
| Frame | Co-op Cycles aluminum with SRAM UDH Road; 12 mm thru |
| Bike Suspension | No Suspension |
| Fork | Co-op Cycles ADV full carbon fork with tapered steerer |
| Crankset | Shimano Sora, 9-speed, 50/34T, size-specific arm length |
| Bottom Bracket | Shimano BB-ES300, BSA 68 mm |
| Shifters | Shimano Sora, 2x9-speed dual-control levers |
| Front Derailleur | Shimano Sora, 9-speed, 34.9 mm clamp |
| Rear Derailleur | Shimano Sora, GS 9-speed, direct attachment |
| Rear Cogs | Shimano HG200 9-speed cassette, 11-34T |
| Number of Gears | 18 gear(s) |
| Brake Type | Mechanical Disc Brake |
| Brakes | Tektro MD-C550 mechanical disc with metal/ceramic pads and 160 mm Tektro 6-bolt rotors |
| Rims | WTB ST i21 TCS 2.0, 29 in./700c, 32-hole, tubeless-ready |
| Front Hub | DM 100 x 12 mm thru, 32-hole, 6-bolt, cartridge bearing |
| Rear Hub | DM 142 x 12 mm thru, 32-hole, 6-bolt, cartridge bearing |
| Wheel Size | 700c |
| Tires | Kenda Piedmont, 700c x 45 mm, wire bead, 30 tpi |
| Tire Width | 45 millimeters |
| Handlebar Shape | Drop Bar |
| Handlebar | Co-op Cycles aluminum ergo, 31.8 mm clamp, 12 deg. flare, 80 mm reach, 125 mm drop, size-specific width |
| Stem | Co-op Cycles aluminum 4-bolt, 31.8 mm clamp, 6 deg. rise, size-specific length |
| Seat Post | Co-op Cycles aluminum, 8mm offset, 27.2 mm diameter, size-specific length |
| Saddle | WTB Silverado medium, steel, polyurethane leather, 265 x 142 mm, ABR corners |
| Pedals | Not included |
| Headset | Integrated, 1-1/8 in. upper, 1-1/2 in. lower |
| Chain | Shimano CN-HG93 9-speed, 114 links |
| Weight | Unavailable |
| Gender | Unisex |
| Sustainability | From a Climate Label Certified brand |
Fits slightly large based on reviews
Co-op Cycles Bikes (207913, 207914)
| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| Height Range | 5'0" - 5'3" | 5'3" - 5'6" | 5'6" - 5'9" | 5'9" - 6'0" | 6'0" - 6'3" |
| Reach | 365.0 | 376.0 | 385.0 | 394.0 | 404.0 |
| Stack | 540.5 | 558.5 | 579.2 | 600.1 | 621.1 |
| Effective Top Tube | 519.8 | 536.1 | 556.5 | 571.7 | 587.9 |
| Seat Tube Center-Top | 385 | 435.0 | 470.0 | 500.0 | 530.0 |
| Standover Height | 689.5 | 728.2 | 758.1 | 788.1 | 814.3 |
| Head Tube Length | 100 | 114 | 138 | 160 | 180 |
| Head Tube Angle (degrees) | 69.8 | 71.0 | 71.5 | 71.5 | 72.0 |
| Seat Tube Angle (degrees) | 74.0 | 74.0 | 73.5 | 73.5 | 73.5 |
| Bottom Bracket Height | 284.5 | 284.5 | 288.5 | 288.5 | 288.5 |
| Wheelbase | 1023.1 | 1028.5 | 1041.5 | 1057.5 | 1069.0 |
| Chainstay | 438.0 | 438.0 | 438.0 | 438.0 | 438.0 |
Sizing Notes
Measurements are stated in millimeters unless otherwise indicated.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.
Need help choosing gear?
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From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.
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Customer Images
Location:Atlanta, Georgia
Age:35–44
Weight:175–200 lbs.
Inseam:34"
Height:6'0"
Experience Level:Casual
Riding Frequency:Daily
8 months ago
The best purchase I've made for myself in a while
Yes , I recommend this product
I absolutely love this bike. I can't stop riding it. I've been on several 12mi rides since picking it up from the store a week ago. It's quite comfortable to ride for long distances. The brakes are responsive and have good stopping power. Shifting is quick, quiet, and precise. The gears are great, I'm always able to find a great balance between power/speed/effort. I used to ride a very average bike from a big box store, and this is lightyears better. On my old bike I would get SO fatigued after short distances and felt like I was constantly fighting to keep speed. On this bike, I can feel the power of my legs propelling me forward with ease. Also, I love that you get SO much for the price. A comparable bike from a big name like Trek, Cannondale, etc is going to at least cost you $400-600 more. All in all, I'm obsessed with this bike, it's amazing, and I highly recommend it.
Age:35–44
Weight:175–200 lbs.
Inseam:34"
Height:6'0"
Experience Level:Casual
Riding Frequency:Daily
Location:Huntsville, AL
Age:75 or over
Weight:175–200 lbs.
Inseam:32"
Height:6'0"
Experience Level:Experienced
Riding Frequency:Multiple times per week
11 months ago
Great gravel bike
Yes , I recommend this product
Purchased the ADV 2.1 gravel bike a few weeks ago and am very satisfied with it. It is very light and maneuverable. Had trouble making some adjustments so took it back to REI and the bike tech had it adjusted and back to me in less than an hour. Great work.
Age:75 or over
Weight:175–200 lbs.
Inseam:32"
Height:6'0"
Experience Level:Experienced
Riding Frequency:Multiple times per week
Location:West Michigan
Age:35–44
Weight:150–175 lbs.
Inseam:30"
Height:5'9"
Experience Level:Beginner
Riding Frequency:Multiple times per week
2 months ago
Excellent general-purpose bike
Yes , I recommend this product
This is a great all-round bike if you're transitioning from mountain biking (or no biking). It looks clean, rides well, is fairly light and comfortable. I've taken it on many rides up to 50 miles and it's held up really well. It's not a road/tri bike - you will go slower than others on more suited gear - but for me that was worthwhile so that I could ride on gravel as well without too much concern. It is not safe for icy conditions - I've fallen a few times! I think the absolute best use of the bike has been for commuting the 6 miles to work. Super comfortable, and excellent for a workout. I highly recommend!
Age:35–44
Weight:150–175 lbs.
Inseam:30"
Height:5'9"
Experience Level:Beginner
Riding Frequency:Multiple times per week
Location:SoCal
Age:45–54
Weight:150–175 lbs.
Inseam:32"
Height:6'1"
Experience Level:Experienced
Riding Frequency:Multiple times per week
7 months ago
Meh
I've had this bike for about 5 months now and have ridden it quite a bit- enough to have replaced the tires. Maybe this is what I should expect for the price but it's a little underwhelming. I find myself changing between the front two chain rings often throughout the ride, never seeming to find the right ratio. The brakes are ok but I wish they were hydraulic- the feel isn't great and you have to really grab them to stop. I hear creaks and rattles while riding but the bike's held up fine. Well, the bar tape started slipping pretty soon into it. I lost everything in the Eaton fire and wanted a bike I could hop on and ride anywhere. I guess this fits the bill, but I wish i'd had time to go to the Trek store.
Age:45–54
Weight:150–175 lbs.
Inseam:32"
Height:6'1"
Experience Level:Experienced
Riding Frequency:Multiple times per week
Age:25–34
Weight:175–200 lbs.
Inseam:32"
Height:6'0"
Experience Level:Experienced
Riding Frequency:Once per week
8 months ago
Great bike
I have owned the bike a month and have gone on about three 11 mi rides. My experience ordering it to the store, having it assembled, and picking it up was positive. The bike performs well on asphalt and on gravel/dirt. The gear shift is smooth (although the shift up on the left hand is the shift down on the right hand, which takes some thought to shift correctly). The handles are comfortable. I had to buy some Shimano pedals separately, which attached easily and work fine. Overall I'm looking forward to riding my bike more soon
Age:25–34
Weight:175–200 lbs.
Inseam:32"
Height:6'0"
Experience Level:Experienced
Riding Frequency:Once per week
Location:Minneapolis, MN
Age:35–44
Weight:225–250 lbs.
Inseam:34"
Height:6'2"
Experience Level:Experienced
Riding Frequency:Multiple times per week
8 months ago
Nimble and comfortable
Yes , I recommend this product
I have put approximately 40 miles on it since the time of purchase, and my initial impressions are overwhelmingly positive. It is agile on pavement, quite light, and after I fine-tuned the seat height - remarkably comfortable. Plenty of mounting points for bags/water/accessories, generous range of gear ratios, decent mechanical brakes, responsive shifting (my other ride has internal gear hub, I was pleasantly surprised), and competitive price for the features. I went with Shimano PD-EH500 for the pedals.
Age:35–44
Weight:225–250 lbs.
Inseam:34"
Height:6'2"
Experience Level:Experienced
Riding Frequency:Multiple times per week
8 months ago
SUCH a good deal
Yes , I recommend this product
I love this bike! Upgraded from the co-op MTB because I was really only riding gravel and paved trails. Even as just a recreational rider, I’ve put 100+ miles on this in the first month. I love everything about it. It’s fantastic, especially if you can snag it with extra sale. Wish I could quit work to ride every day.
1 year ago