Assembly · Gravel ·

How to Assemble a Mongoose Adventure Bike

Adventure begins where the pavement ends. Get ready to roam those winding gravel paths on your new Mongoose Guide adventure bike!

We’ll show you how to assemble your ride with the quick start guide below. Be sure to read it along with your Mongoose owner’s manual. Both contain important safety information.

You’ll need the following tools:

  • Scissors
  • Lithium-based grease
  • 4 mm hex key
  • 6 mm hex key
  • Phillips screwdriver
  • 15 mm wrench
  • Bike pump

Let’s get started!

Step 1

Unbox the Bicycle

A person unboxing a Mongoose gravel bicycle.

Take all bike parts out of the box and carefully remove packing materials.

Step 2

Install the Seatpost

A person installing a seatpost on a Mongoose Guide Sport gravel bike.

Apply grease to the inside of the seat tube. Use a 6 mm hex key to open the seatpost clamp, then slide the seatpost into the frame. Ensure the seatpost is inserted past the minimum insertion line marked on the post. Align the nose of the seat with the frame of the bicycle. Tighten the seatpost clamp.

Step 3

Install the Handlebar

A person installing the handlebars on a Mongoose Guide adventure bike.

Use a 4 mm hex key to remove the faceplate from the stem. Position the handlebars so that they are centered behind the faceplate, and then partially retighten the faceplate bolts in an alternating X-pattern. 

Step 4

Install the Front Wheel

A person attaching a front wheel onto their Guide gravel bike by Mongoose.

In the box, locate the quick-release skewer, adjusting nut, two springs, and the quick-release lever.

Remove the adjusting nut and one spring. Insert the quick-release skewer through the front wheel axle, from the side opposite the brake disc. Reinstall the spring, narrow end first, and lightly tighten the adjusting nut.

Remove the disc brake pad spacer. Lift the front of the bike and roll the wheel back. Ensure the brake disc goes into the caliper, then lower the fork dropouts onto the axle. Tighten the adjusting nut and close the quick-release lever tightly enough that it leaves a clear imprint on your hand. 

Step 5

Adjust and Tighten the Handlebar

A person adjusting the handlebars on a Mongoose Guide during the assembly process.

Align the top bar and brake hoods so that they are level with the ground. Then, fully tighten the faceplate bolts in an alternating X-pattern.

Tighten and position the front reflector using the Phillips screwdriver.

Step 6

Attach the Pedals

Someone attaching the pedals on their Mongoose Guide bike.

Pedals are side-specific; match them to the corresponding crank arm using the stickers. Apply a small amount of grease to the pedal threads. Hand-thread and then tighten the pedals toward the front of the bike with the 15 mm wrench.

Step 7

Inflate the Tires

A person pumping up the tires on a Mongoose Guide gravel bike for road use.

Inflate the tires to the recommended PSI printed on the side of the tire. Never exceed the recommended PSI.

Step 8

Do a Quick Safety Check

A person performing a safety check on their Mongoose Guide before riding.

Push and pull on the handlebars and seat to make sure all parts are secure. Test the brakes to make sure they work. Finally, be sure to read your owner’s manual.

That’s it! Strap on your helmet, and you’re ready to ride.

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