Back to top

Please select a color/size.


  • Hand-built carbon fiber monocoque frame with Enhanced Performance Geometry
  • Continuous Fiber Technology full carbon fiber fork and tapered head tube provide steering precision and vibration damping
  • Hydraulic disc brakes deliver superior stopping power
  • Front and rear thru axles for impeccable tracking and stability
  • Closed Circuit Cable Routing is clean and aerodynamic
  • Shimano 105 2x11-speed drivetrain offers a wide range of gearing for easy climbing and plenty of speed on the flats
  • HED Flanders C2+ rims are wrapped with Continental Ultra Sport II 28 tires for excellent all-around performance
  • Pedals not included
  • 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

REI membership


Best Use Road Cycling
Frame Carbon
Fork Carbon
Crankset Shimano 105 FC-5800 Compact, 50/34T
Bottom Bracket Shimano outboard bearing
Shifters Shimano ST-RS505, Dual Control 2x11-speed
Front Derailleur Shimano 105 FD-5800, 31.8mm band clamp
Rear Derailleur Shimano 105 RD-5800, 11-speed
Rear Cogs Shimano 105 CS-5800 Cassette, 11-speed, 11-32T
Number of Gears 22
Brake Type Hydraulic Disc Brake
Brakes Shimano BR-RS505 Flat Mount hydraulic disc, 160mm rotors
Brake Levers Shimano ST-RS505
Rims HED Flanders C2+ Disc, 24h
Front Hub Continental Ultra Sport II, Folding, 700x28
Rear Hub 24h Alloy, Sealed Cartridge, HighLow Flange, 142x12mm thru-axle, w/ center lock disc mount, cassette
Wheel Size 700c
Tires Continental Ultra Sport II, Folding, 700x28
Tire Width 28 millimeters
Handlebar Shape Drop Bar
Handlebar HED Tour Flat Top drop bar, 31.8mm bar bore
Stem HED Tour Stem, +/-7 rise, 31.8mm bar bore
Seat Post HED Tour, 27.2mm
Saddle Prologo Scratch Pro, with Chromoly rails
Pedals Wellgo Alloy Road
Headset FSA NO.42, Sealed Cartridge for tapered headtube
Chain KMC X11EL, 11-speed
Weight 18 lbs. 3 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.

  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 134ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;

What is the weight of the 56cm Century 4 Carbon disc and how large of tires will it fit? Thanks for the answers.

Asked by: Year Round Biker
Unfortunately, Diamondback does not provide us with the weights of their bikes. There is no industry standard for uniformly measuring the weight of bicycles. Frame size, componentry and where or not certain accessories (reflectors, racks or pedals) are included with the bike can cause a significant variance in bike weight. This bike will fit a 32mm tire, and possibly larger depending on brand.
Answered by: REIservice
Date published: 2017-01-25

You list a weight for the bike in the spec. Where did you get that information? Does that come from Diamondback?

Asked by: clarkide1281
We received the bike weight directly from Diamondback.
Answered by: REIservice
Date published: 2017-04-13
  • y_2017, m_4, d_24, h_6CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_2
  • loc_en_US, sid_108754, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_rei-inc
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 82ms