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Haanjo 4 Gravel Bike

Haanjo 4 Gravel Bike




Why We Like The Haanjo 4 Gravel Bike

The Diamondback Haanjo 4 Gravel Bike brings a race-worthy drivetrain, disc brake power, and high-quality wheels right to your garage as a versatile addition to your cycling stable. With geometry built for all-day comfort and solid handling on a wide variety of terrain, this bike is right at home hitting the local limestone trail, exploring remote gravel roads, or hopping down the street for a dozen bagels. Its frame and fork are responsive to efforts on the road, and its tires and geometry give full confidence on everything from gravel and grass to fast singletrack or washboard surfaces. Its geometry leans toward the long and comfortable end of the spectrum, which keeps you more upright and doesn't handle like a twitchy racing frame.

The bike also incorporates a myriad of small details that recommend it for use beyond just recreation. For example, the top tube of the frame is flattened a bit, which makes the bike easier to shoulder when traversing stairs in the middle of your favorite commute shortcut. It also benefits from the certainty of mechanical disc brakes for extra stopping power when loaded with touring gear. Finally, touches like the full carbon fork, Shimano GRX drivetrain, and HED Tomcat rims mean this bike isn't just made for grinding gravel or getting groceries—it's a bike that can also show up for cycling events or 'cross.

*Due to unprecedented demand in the global supply chain and the bike industry over the last 18 months, material weight and exact components are subject to change. We are working diligently to keep tech specs updated, and any adjustments will be minor. If you have any questions, reach out to a Gearhead by chatting online or calling 1-888-276-7130.


  • Hit the roads or trails with this budget-friendly gravel bike
  • Butted alloy frame is lightweight and reliably strong
  • Carbon fork with thru-axles for precise steering and handling
  • Endurance geometry is comfortable and stable on long rides
  • Gravel-focused GRX drivetrain is perfect for rough roads
  • HED Tomcat wheels can handle plenty of off-road abuse
  • TRP mechanical disc brakes for keeping your speed in check
  • Voluminous WTB Riddler tires provide excellent comfort and grip
  • Item #DMB1WU5
Frame Material
fully-butted 6061-T6 aluminum
DB Gravel Performance, full monocoque carbon
FSA No. 42 Sealed Cartridge
Shimano Tiagra, 10-speed
Front Derailleur
Shimano GRX 400, 31.8mm clamp
Rear Derailleur
Shimano GRX 400 Shadow Plus, 10-speed, GS
Shimano GRX 600
Chainring Sizes
46 / 30t
Bottom Bracket
Shimano outboard bearing
Shimano HG-500, 10-speed
Cassette Range
11 - 34t
KMC X10EL, 10-speed
TRP Spyre C Flat Mount Mechanical Disc
Brake Type
flat-mount disc
HED Eroica, 7050 aluminum
Bar Tape
Diamondback Endurance Gel Tape
HED Eroica 6061 3D-forged aluminum
WTB Silverado Race
HED Eroica 6061 aluminum, 27.2mm diameter
[rims] HED Tomcat Disc, 28h, 21mm internal width, tubeless-ready
Aluminum Sealed Cartridge, Centerlock
Front Axle
12 x 100mm thru-axle
Rear Axle
12 x 142mm thru-axle
Tire Clearance
WTB Riddler, Dual DNA Compound
Tire Size
700 x 37mm
not included
Manufacturer Warranty
[frame] lifetime