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  • Endurance geometry will keep you comfortable all day in the saddle and the aluminum alloy frame is just the thing for worry-free durability
  • Fully butted and formed tubing construction strikes the perfect balance between light weight and strength, and the carbon leg fork takes the edge off rough road chatter
  • DB Gravel Disc Carbon fork, 1.5 in. taper alloy steerer
  • SRAM Apex 1x11 drivetrain provides simplicity and confidence for any terrain, anytime
  • SRAM Apex 1 hydraulic disc brakes and all-terrain tires supply true multi-road capability
  • Specs are subject to change


All bicycles sold at REI include a free warranty tune-up. New bikes go through a normal break-in period, after which readjustment is important for longevity and performance. Bring your new bike in to your local REI for its free tune-up within 20 hours of use or 6 months from purchase, whichever comes first. Contact your nearest REI bike shop to schedule this important service.


When you purchase your Diamondback bike on, have it shipped to any REI store where it will be ready for pick up fully assembled (and you'll avoid the home-delivery oversize shipping charge)!

View all Diamondback Endurance Bikes

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Best Use Road Cycling
Frame 6061 aluminum
Fork Carbon
Crankset SRAM S350 X-Sync, with 44t chainring
Bottom Bracket SRAM GXP
Shifters SRAM Apex 1, 11-speed
Rear Derailleur SRAM Apex 1, 11-speed
Rear Cogs SRAM PG1130, 11-speed, 11-42t
Number of Gears 11
Brake Type Hydraulic Disc Brake
Brakes SRAM Apex 1 hydraulic disc, with 160mm front/140mm rear centerline rotors
Brake Levers SRAM Apex 1
Rims HED Tomcat Disc, 24h, 21mm internal width, tubeless ready
Front Hub 24h alloy HighLow flange, sealed cartridge; CNC disc mount, 15mm thru-axle
Rear Hub 24h alloy sealed cartridge, CNC disc mount, 142x12mm thru-axle
Wheel Size 700c
Tires Kenda Flintridge, 60 tpi, 700x40c
Tire Width 40 millimeters
Handlebar Shape Drop Bar
Handlebar HED Grand Tour, 7050 alloy, 31.8mm bar bore
Stem HED Eroica, 6061 alloy, 3D forged, +/-7 Rise, 31.8 Bar Bore
Seat Post HED Eroica, 6061 alloy, 27.2mm
Saddle DB Eldorado
Pedals DB Laser alloy platform
Headset FSA NO.42, sealed cartridge for tapered head tube
Chain KMC X11EL, 11-speed
Weight 22 lbs. 8 oz.
Bike Weight Bike weight is based on median size, as sold, or the average of two median sizes.
Gender Unisex

Size chart

Sizing notes

Bike measurements are stated in millimeters.

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Can a rear Topeak rack be mounted to this frame?

Asked by: m_main82
A Topeak rack can be mounted to this bike. The Explorer MTX Tubular Rack with Disc Mounts is a good choice.
Answered by: REIservice
Date published: 2017-05-17

Can a Thule Ride-a-long bike seat be mounted to this bike?

Asked by: Jamie
  • y_2017, m_5, d_25, h_10CST
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