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Mongoose

Mongoose Flatrock 21-Speed Hardtail Mountain Bike, 24 to 29-Inch Wheels, for Men Women Boys and Girls, Front Suspension, 14.5 to 18-Inch Aluminum Frame Options

    • Based on 326 reviews
Condition: New
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This item is eligible for return within 30 days of receipt

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Availability: Only 1 left in stock, order soon!
Fulfilled by Globally Ventures
Arrives Jan 7 – Jan 14
Order within 12 hours and 21 minutes
Available payment plans shown during checkout

Color: Teal


Size: 14.5-Inch Frame/24-Inch Wheels


Features

  • Hardtail MTB with a lightweight 6061 aluminum frame and 24-inch wheels is perfect for all terrain adventures, best fit to riders 4'8" to 5'6" tall
  • Element suspension fork improves performance and control while providing a smoother ride
  • 21-speed twist shifters and rear derailleur provide effortless gear changes when riding up an incline or speeding down a decline
  • Reliably stop with confidence using the front and rear alloy v-brakes, delivering dependable stopping power
  • Experience lightweight durability with the double wall alloy rims

Description

Explore rad new trails with the Flatrock mountain bike by Mongoose. The Flatrock comes equipped with a lightweight aluminum hardtail frame and Element suspension fork that are ready to tear down the trail. 21-speed twist shifters and rear derailleur provide effortless gear changes, while alloy v-brakes deliver reliable stopping power. Plus, double wall alloy rims offer lightweight durability. Get out there and explore with the Mongoose Flatrock.

Bike Type: Mountain Bike


Age Range (Description): Adult


Brand: Mongoose


Number of Speeds: 21


Color: Teal


Wheel Size: 24 Inches


Frame Material: Aluminum


Suspension Type: Front


Special Feature: Lightweight


Included Components: Flatrock Bike


Bike Type: ‎Mountain Bike


Age Range (Description): ‎Adult


Brand: ‎Mongoose


Number of Speeds: ‎21


Color: ‎Teal


Wheel Size: ‎24 Inches


Frame Material: ‎Aluminum


Suspension Type: ‎Front


Special Feature: ‎Lightweight


Included Components: ‎Flatrock Bike


Size: ‎14.5-Inch Frame/24-Inch Wheels


Brake Style: ‎Linear Pull


Specific Uses For Product: ‎Trail


Item Weight: ‎15.2 Kilograms


Style: ‎Bike


Model Name: ‎Flatrock


Wheel Material: ‎Aluminum


Year: ‎2021


Seat Material Type: ‎Vinyl


Warranty Type: ‎Limited


Maximum Weight Recommendation: ‎250 Pounds


Assembly Required: ‎Yes


Skill Level: ‎Beginner


UPC: ‎038675236158


Manufacturer: ‎Pacific Cycle, Inc


Item Package Dimensions L x W x H: ‎48 x 26.3 x 8.6 inches


Package Weight: ‎18.26 Kilograms


Brand Name: ‎Mongoose


Warranty Description: ‎Limited Lifetime


Material: ‎Aluminum


Suggested Users: ‎unisex-adult


Part Number: ‎R1997


Date First Available: December 11, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jan 7 – Jan 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Mongoose Bikes At Their Best!!
Color: Red Size: 18-Inch Frame/29-Inch Wheels
Legendary reliability and development on full display with this large, capable, and comfortable Mongoose mountain bike!
Reviewed in the United States on September 5, 2024 by Carlos Ubirlea
    • "You Get What You Pay For" Should be the Title for Every Bike Purchased in this Price Range
Color: Blue Size: 14.5-Inch Frame/24-Inch Wheels
It's a really heavy Mongoose but .. I knew that when I pressed the "add to cart" button. The hardware on the bike is mediocre but .. knew that. The bike does everything you need it to do .. unless you're a "bike person". If you ride this too hard .. it breaks. If you use it for transportation, or if you need a good beater for your kid who will be throwing this at the ground repeatedly until they move out of your house chasing some dream job in cosmetology or whatever nightmare they're dreaming of .. this is the bike for you. Assembly was complicated by the fact that it's just an okay bike. The tools they include are enough to assemble the bike with but, you can cut your assembly time in half if you just have some basic tools lying around the house. The bike rides and feels fine. With some fine tuning on the brakes and shifter mechanism, the bike would stop and shift fine. Solid "bang for the buck" on this but, if you spend another couple hundred bucks, there are better choices that would be worth much more than the extra investment. All in all .. this is okay and it's fine unless you're really trying to do anything outside the realm of "commuting". ... show more
Reviewed in the United States on July 27, 2023 by Sean C.
    • Good so far
Color: Silver Size: 17-Inch Frame/26-Inch Wheels
Bike seems well built for the price I probably wouldn’t do anything too crazy but I plan on making this a 5000watt e-bike so I’ll definitely be testing it to the max I wish I paid more attention as this one has rim brakes not disc but it stops good enough for now no big deal I’ll update later on how it’s holding up. ... show more
Reviewed in the United States on October 3, 2024 by Will
    • Very pleased!
Color: Purple Size: 16-Inch Frame/26-Inch Wheels
Arrived undamaged, box was in perfect condition. Instructions were a bit confusing at first, but once i studied them closely and figured out which type of bike parts i had, assembly was a breeze. Bike looks great in dark purple, very stylish. And best of all, it rides great!
Reviewed in the United States on June 3, 2023 by Rockheart
    • Poor Customer Service Response due to scratches on frame
Color: Purple Size: 16-Inch Frame/26-Inch Wheels
Review Image by Twank Twank
Review Image by Twank Twank
Review Image by Twank Twank
Review Image by Twank Twank
I bought this item for my wife for her birthday. so i wanted to get it assembled in time for her. Upon receiving it I noticed the box was severely damaged. i removed the bike and looked it over in dim lighting. I noticed a couple small scratches but thought no big deal i will contact the seller and they will help me find a resolution. They suggested i either use model car paint or nail polish or just return the bike (which means i have to disassemble and reassemble a new one along with the inconvenience of trying to fit everything back into a box) so i responded asking if it was a joke. They want me not only to locate the correct color, buy it and then paint it. not even so much as a "we apologize for the inconvenience". apparently they don't have touch up paint now lets get to the assembly. it went pretty well but the front wheel did not easily fit thru the front brake bracket so i had to undo the brake to get the wheel in then had to put the brake mechanism back together. i think spend the next 30 minutes trying to adjust the brake so it wasn't rubbing. ride and fit. my wife liked the way it felt riding the bike. and wants a new replacement instead so i am going to return to get one that is not scratched (hopefully) i however, being a man on a women's bike thought it felt small. but my bigger issue was the front strut felt awkward to me when going over bumps. it was a sudden bounce and the few times i rode it trying to adjust the brake i thought the tire popped each time i hit a bump due to the lack of smoothness in the strut. overall bike is decent and not overly light but its not terribly heavy either. due to the customer service response this bike get 1 star. i would have probably given a bit higher rating if not for the joke of a response. amazon customer service agent was helpful and friendly in determining how to ship the item back. ... show more
Reviewed in the United States on August 15, 2022 by Twank Twank
    • Chain falls off alot and trouble shifting gears
Color: Purple Size: 16-Inch Frame/26-Inch Wheels
The chain keeps falling off the the gears are terrible. I love the color and the rest of the bike. I did change up the seat, the one that came with the bike wasn't comfortable.
Reviewed in the United States on July 11, 2024 by Matt
    • Easy to Assemble and Meets My Needs
Color: Purple Size: 16-Inch Frame/26-Inch Wheels
I live in a medium-sized neighborhood; I bought this bike to more easily travel within my neighborhood without having to use my car for very short trips. I have never assembled a bike before, but I was able to assemble this one quite easily. The instructions were a bit confusing, because instructions are included for several different versions of the bike, but once I acclimated to which instructions were applicable to me, it wasn't very hard. I did have to purchase a few items for assembly, but they were not very costly, and they will be useful additions to my toolbox. Assembly really only entailed attaching the handlebars, seat and pedals. All of the gear mechanism was already assembled. The bike is easy to ride and operate. So far, I'm completely satisfied with this purchase! ... show more
Reviewed in the United States on October 20, 2022 by Wendi McDaniel
    • Nice bike
Color: Red Size: 18-Inch Frame/29-Inch Wheels
Still working on it to get it 100% functionable . Many screws and bolts still not tight. Best to take it to a bike shop to assemble . My bike has an issue with the chain guard . An issue with the person at mongoose who assemble this bike . I do think it be a nice bike once everything works like it suppose too . Amazon had a good price too . ... show more
Reviewed in the United States on May 26, 2024 by louis bevans

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