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Mongoose Dolomite R4144 Fat Tire Mountain Bike, 26-Inch, 7-Speed, Blue/Red

$719.99 (Price correct as of 11/10/2026 07:18 PST · Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The Mongoose Dolomite R4144 is a blue/red fat-tire mountain bike with a 17-inch/Medium steel frame, 26-inch wheels and 4-inch-wide knobby tires. Its listed components include a 1 x 7 drivetrain, front and rear mechanical disc brakes, alloy rims and beach cruiser pedals. The bike is listed for riders 5 feet 4 inches to 6 feet tall and weighs 52 pounds. It arrives 80% assembled; check fit and assembly needs before choosing.

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SKU: B00J7J40TM Category:

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Quick Summary

The Mongoose Dolomite R4144 is a fat-tire mountain bike with 26-inch wheels, 4-inch knobby tires and a 7-speed drivetrain. It has a steel frame, mechanical disc brakes and a blue/red finish. Check the 17-inch frame and stated rider-height range against the rider before choosing this bike.

Key Details

Detail Product information and buyer relevance
Model Mongoose R4144, also identified as the Dolomite.
Wheels and tires 26-inch wheels with 4-inch-wide knobby tires.
Frame 17-inch/Medium steel frame; frame size is a key fit consideration.
Drivetrain 1 x 7 drivetrain with seven gears.
Brakes Front and rear mechanical disc brakes.
Other components Alloy rims and beach cruiser pedals.
Weight and color Listed at 52 pounds, in blue/red.
Warranty A limited lifetime warranty is listed. Review its terms and coverage for this model.

Size and Fit

The listing gives a suggested rider height of 5 feet 4 inches to 6 feet and identifies the frame as 17-inch/Medium. Treat these as fit guidance rather than a substitute for checking the bike’s fit for the rider. Confirm the frame size and riding position suit the intended user.

What to Compare Before Buying

  • Rider fit: Compare the 17-inch/Medium frame and stated height range with the rider’s needs.
  • Tire dimensions: Check that 26-inch wheels and 4-inch-wide tires are the intended size.
  • Weight and gearing: Consider the listed 52-pound weight and 1 x 7 drivetrain in relation to the rider’s requirements.

Setup and Correct Use

The bike arrives 80% assembled. Tools listed for completing assembly are a Phillips-head screwdriver, a 2.5-8 mm Allen wrench, an adjustable wrench and pliers. Check the selected configuration for assembly details, and follow the bike’s instructions for setup and use.

Before You Decide

Confirm the frame and rider fit, the 26-inch wheel and 4-inch tire dimensions, and whether the assembly tools are available. Review the bike’s instructions before completing assembly or riding.

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