Orbea extended its Terra gravel line, showing off a new, more affordable alloy option; the Terra Hydro. Orbea launched the latest version of the Terra in November 2021. Leaning more to the gravel race side and less to cyclocross.

Orbea Terra Hydro Alloy Gravel Bike fully loaded

The nice thing about alloy is that it can include additional rack and fender mounts for gear-hauling and off-road adventures for the new Terra Hydro. The Terra hydro takes much inspiration from the carbon fiber Terra with nearly the same geometry, fork, and ample tire clearance.

Orbea Terra Hydro Alloy Gravel Bike head top tube

Material change, a similar vision

The new aluminum Terra models are made from Orbea’s hydroformed aluminum. In the quest for a light frame that offers resistance to unwanted torsional flex, Orbea engineers determine the shape and thickness of the aluminum tubes for each size frame. Many of the tubes are butted to save weight, making them lighter in the mid-section, away from the stress of joints and welds.

Orbea Terra Hydro Alloy Gravel Bike seattube

For the fork, it’s the same OMR monocoque carbon fork on the Terra carbon models. The fork was updated to perform better in gravel, along with the frame for the November launch of the new Terra. Orbea feels that the new OMR fork offers the best tire clearance (50mm) and torsional stiffness for gravel disciplines.

Orbea Terra Hydro Alloy Gravel Bike action two riders

Orbea Terra Hydro Geometry

The Orbea Terra has changed from cyclocross to sorta-gravel to full-on gravel. The Terra Hydro takes handling and geometry from the carbon version, keeping the ride focused on comfort and handling.

Orbea Terra Hydro Alloy Gravel Bike wave bars

As for the carbon vs. alloy geometry, the Terra Hydro does have a few tweaks that help it achieve more in the adventure and packing routes. Like the carbon Terra, the Terra Hydro is designed around a longer reach, lower bottom brack, but with a short stem to keep the steering sharp. Side-by-side, the Terra Hydro has 10mm longer chainstays (420mm Terra carbon and 430mm Terra Hydro).

Orbea Terra Hydro Alloy Gravel Bike Geo Chart

Gravel bike or Bike Packing

The Orbea Terra Hydro drops the price for entry into the Orbea gravel bike universe. The brand launched the new Terra Hydro to make gravel more accessible by supporting a wide range of cyclists, and the many build options and components choices, there should be a model for everyone’s style.

Orbea Terra Hydro Alloy Gravel Bike drive train

The Terra Hydro starts at $2,400 and finishes the line at $2,700 with three builds, with either 1X11, 2X11, or 2X10 speed drivetrains.

Orbea Terra Hydro Alloy Gravel Bike rear mech

The frame boasts more mounts for fenders, racks, and can accommodate three water bottles, making it an excellent option for bike packing or ultra-endurance racing–however, it does lack top tube mounts and fork mounts that have become fairly common for this type of bike. The Terra Hydro comes stock with mostly 700X45 tires, but Orbea says riders can opt for 50mm tires and 650b wheels.

Orbea Terra Hydro Alloy Gravel Bike action close up

Orbea Terra Hydro models and pricing

The Orbea Terra Hydro is available in three different models with builds to suit the other gearing options you’ll need for the journey, with sizes XS to XXL. The Orbea Terry Hydro H30 comes with Shimano GRX RX810, RX600, and RX400 series components and an 11-speed drive train.

The entry-level Orbea Terry Hydro H40 is available only with a 2X10 drivetrain and Shimano GRX RX400 components. All models are available in Matt-Gloss Black, Matt Copper, or Gloss Mango.

Orbea Terra Hydro Models

Orbea Terra Hydro Alloy Gravel Bike H30

Orbea Terra Hydro H30

Frameset: Terra Hydro disc frame and Terra OMR carbon disc fork
Groupset: Shimano GRX RX810, RX400
Handlebar: OC GR30-R Gravel Riser
Stem: OC RP21 Road Performance
Seatpost: OC2 Carbon 27.2mm
Saddle: Fizik Aliante R5
Wheels: Orbea Ready GR
Tires: Vittoria Terreno Dry Gravel G2.0 TNT 700×38mm
Price: $2,799

Orbea Terra Hydro Alloy Gravel Bike H30 1X

Orbea Terra Hydro H30 1X

Frameset: Terra Hydro disc frame and Terra OMR carbon disc fork
Groupset: Shimano GRX RX812, RX600, RX400
Handlebar: OC GR30-R Gravel Riser
Stem: OC RP21 Road Performance
Seatpost: OC2 Carbon 27.2mm
Saddle: Fizik Aliante R5
Wheels: Orbea Ready GR
Tires: Vittoria Terreno Dry Gravel G2.0 TNT 700×38mm
Price: $2,699

Orbea Terra Hydro Alloy Gravel Bike H40

Orbea Terra Hydro H40

Frameset: Terra Hydro disc frame and Terra OMR carbon disc fork
Groupset: Shimano GRX RX400
Handlebar: OC GR30-R Gravel Riser
Stem: OC RP21 Road Performance
Seatpost: OC2 Carbon 27.2mm
Saddle: Fizik Aliante R5
Wheels: Orbea Ready GR
Tires: Vittoria Terreno Dry Gravel G2.0 TNT 700×38mm
Price: $2,499

All three models are available in six sizes and three different colors.

For more info, check out Orbea.com.

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12 Comments
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Speshy
Speshy
3 months ago

Does anyone out there know if you could sand the welds down on a bike like this without altering the structural integrity of the frame? There are so many aluminum bikes with blobby welds out there I wonder why companies don’t take the time sand the weld joints down.

Burt
Burt
3 months ago
Reply to  Speshy

Sanding down is pure manual labor and costs. Then people would moan that the bikes are too expensive and not entry level anymore. Checkout high priced brand with the letter „C“ for sanded welds.

Steve Varga
3 months ago
Reply to  Speshy

Yes you can. Manufacturers don’t do it because it takes a lot of time and hence adds cost and the whole point of aluminum frames is to provide a more affordable option. Of course if you chose to sand the welds smooth you will have to repaint the bike which will add further cost.

Dave
Dave
3 months ago
Reply to  Speshy

Definitely not. The weld size is intentionally specified and structural

Shad
3 months ago
Reply to  Speshy

Why? Aluminum Bobby welds are cool looking!

Bob
Bob
3 months ago
Reply to  Speshy

Bad welds get ground. Typical bike welds are a work of art “stacked dimes” and are the work of an expert.

Rembrandt
Rembrandt
3 months ago
Reply to  Speshy

The throat of the weld is necessary for weld strength, especially with aluminium. Thats why they are never sanded down.

They probably design bikes with the smallest possible welds in mind, so personally i would not remove more.

James Dean
James Dean
3 months ago
Reply to  Speshy

You’re hilarious. If you really wanted to you can sand them down, but if you’re not a welder I’d be willing to bet you’re going to take off too much metal while you’re obsessing over a minor detail. Good luck.

lihtan
3 months ago
Reply to  Speshy

Cannondale used to do this. If you’re not careful, it can introduce stress risers that can promote frame failure.

TypeVertigo
3 months ago
Reply to  Speshy

In the folding bike world, this was one way Tern differentiated itself from its corporate sibling Dahon (and probably still does). The two companies share a lot of tech, but Tern folding bike frames have their welds smoothed, among other premium touches.

Greg
Greg
3 months ago

Typo, the chainstays on the Hydro are longer at 430 vs 420, not shorter.

Simon Currey
3 months ago

I notice description “only” to position the GRX 400. I would describe it this way robust exemplary shifting. The biggest gear range any Shimano Gravel set, 500%, if you run a 11 36 cassette, 13 gear ratios, trivial weight difference compared to vastly more costly alternatives. Gear range and steps far more important than a few hundred grams for most journeys. Please check my numbers. I ride a GT grade carbon elite.