Diamondback Overdrive 27.5

Diamondback Overdrive 27.5 Review: A Must Read Guide

In a market full of over hyped high-end mountain bikes with exaggerated prices, it’s pleasing to know that you can still find a good quality model without spending to your last dime.

Diamondback Overdrive 27.5 is one of the most affordable mountain bikes you’ll find on the market today. A classic aluminum hard tail, it promises durability and reliable performance.

As part of our goal of helping improve your biking experience, we’ve taken it upon ourselves to explore more about this bike to help you decide if it’ll indeed fit your needs and expectations as promised by the manufacturer.

Let’s get to know about the bike below…

Diamondback Bicycles Overdrive St Mountain Bike, Green, 20"/Large
  • Hand built 6061-T6 aluminum alloy hardtail frame is Classic mountain biking
  • Custom formed and butted tubing combines lightweight and stiffness


  • Reasonable pricing
  • Different size options
  • Lightweight aluminum bike
  • Good aesthetics
  • Smooth shifting capabilities
  • Easy and fast assembly


  • Teeth on the plastic pedals can be a problem when pedaling in chilly weather
  • The seat might feel uncomfortable for you; however, you can replace it with a more comfortable one

Features and Benefits of Diamondback Overdrive 27.5:

Durable & Lightweight Frame

Just like any other top-rated bike from Diamond, and pretty much any other manufacturer out there, this bike is made from quality materials for maximum durability.

It’s constructed from a 6061-T6 aluminum alloy, which enables it to hold up to the roughest riding conditions, whether you’re riding on dirt or gravel pathway or when you hit bumps, twists, etc.

Another benefit you’ll get from the durability of this bike is that you’ll spend less time in the repair shop and more time enjoying the rides.

Since the aluminum alloy used to design this has lightweight properties as well, it helps keep the bike weight at a low.

Up to 27 Speed Options

If you look up at the specs of modern mountain bikes out there, you’ll realize that most of them offer you a maximum of 21 speeds.

While this might sound enough for an average bike, getting a higher number of speeds won really hurt.

Good news is that this bike from Diamondback provides you with 6 extra speeds in addition to what most modern bikes offer you—making the total 27 speeds. All this is made possible by the Shimano 9-speed drive train.

REMEMBER…the more speeds the bike gives you, the easier it becomes to tackle the steepest of the roads.

Top-performance Hydraulic Brakes

Good brakes are crucial in every bike. By the term ‘good brakes,’ we refer to brakes that are able to work efficiently anytime and anywhere.

We found that Diamondback has equipped this bike with hydraulic disk brakes from Tektro Auriga series. For those who don’t, these bikes have a reputation for providing you with plenty of stopping power in all riding conditions and surfaces.

With such powerful brakes on your bike, you can ride confidently knowing that your safety is guaranteed as you can make emergency stops in any weather conditions and on all terrains.

Rugged Wheels

Another feature we love about this mountain bike is the sturdy wheels it comes with.

If you get a bike with a solid body and other impressive features but lacks good wheels with a decent size, you won’t take long before you realize that your ride isn’t faring well on some surfaces.

This particular MTB from Diamondback presents you with rugged and large wheels to enable you to traverse both the smooth and challenging terrains with the ultimate ease.

No obstacles, pebbles, rocks, etc., will stand in your way with these wheels.

Multiple Sizes To Choose From

We all know how annoying it gets when you finally get a great bike with everything you ever wished for in your dream bike, only to find there’s no good size for you.

In such scenarios, you’ll either have to take home a bigger or smaller model. And the direct result of riding the wrong bike size is that it forces you to assume a bad posture that brings difficulties and discomforts during pedaling.

With this bike, you’ll be able to choose from a variety of sizes based on your body heights. The sizes include:

  • Small (16-in frame): suitable for body height 5’4” to 5’7”
  • Medium (18-in frame): good for body height 5’7” to 5’10”
  • Large (20-in frame): good for body height 5’10” to 6’1”
  • X-Large (22-in frame): good for body height 6’1” to 6’4”

Apparently, Diamondback Overdrive 27.5 is ideal for riders with a body height ranging from 5’4” to 6’4”. Nearly all riders fall in this height range, so everyone will get the right bike size for them.

Frequently Asked Questions

1. Is this a women’s or men’s bike?

The bike is unisex, meaning it can be used by both male and female riders. You just need to ensure you pick the right size that fits your body height to ensure you feel comfortable when riding the bike.

2. Can I adjust the front fork suspension of this bike?

Yes, it’s 100% possible and easy to adjust the pressure or stiffness of the bike front fork.

3. Is the bike hard to assemble?

No. Like any other bike from Diamondback, this bike comes 85% assembled, meaning you’ll need to assemble a few parts to make it look complete and ready to hit the trails.

You can installation videos and tutorials online and on the manufacturer’s official website for easy and fast assembly.

4. How wide are the bike tires?

The bike tires measure 2.10 inches wide and have a diameter of 2.75 inches.

5. How do I pick the ideal size for me?

The ideal bike size for you should always depend on your body height. That being said, Diamondback has a sizing chart that shows you which bike size to choose depending on how tall you are. (be sure to check the sizing chart we’ve outlined above).

Final Verdict

Two things put the Diamondback Overdrive 27.5 ahead of its competitors. One, it’s one of the most affordable mountain bikes on the market today (at under $100). Second, it’s quite easy to ride, making it an excellent option for starters.

We’re satisfied with the list of features and capabilities that come with this bike, which even go beyond its cost. The solid frame, larger tires, and multiple speeds make it a real mountain bike worth every penny.

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