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Deal.ai › MotoTec
Mototec
Mototec Blue Thunder 50cc 2-Stroke Kids Dirt Bike

Mototec Blue Thunder 50cc 2-Stroke Kids Dirt Bike

Best price now

$405.47at AmazonChecked 7 h ago

Compared across 9 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Lowest price today: $405.47 at Amazon (checked Nov 13, 2026).
  • Checked at 9 stores.

Our take on the Mototec Blue Thunder 50cc 2-Stroke Kids Dirt Bike

The Mototec Blue Thunder is a small 50cc two-stroke dirt bike built for young riders moving up from a toy. It pairs an air-cooled engine with an automatic centrifugal clutch, so there is no gear lever to learn, and it has a pull start. Full suspension (inverted front fork, rear mono shock) and front and rear disc brakes put it ahead of basic minibikes that run coil springs and drum brakes. It suits a child ready to learn throttle and brake control on dirt, not a first-time toddler rider.

Best forKids stepping up from a minibike or toyBackyard trail and dirt-lot ridingParents who want a no-shift starter bikeLearning throttle and brake control
Pros
  • Automatic centrifugal clutch, no shifting to learn
  • Pull start, no kick-start technique needed
  • Front inverted fork and rear mono shock
  • Front and rear disc brakes
  • Air-cooled two-stroke is simple and light
  • Compact kid-sized geometry
Cons
  • Two-stroke needs pre-mixed fuel
  • Pull start can be tiring for a small child
  • No electric start
  • Loud two-stroke exhaust
  • Chain drive and two-stroke upkeep demand regular maintenance

Mototec Blue Thunder 50cc 2-Stroke Kids Dirt Bike prices at every store

  • Dirt Moto BikesNew

    In stock

    $409.00Free shippingChecked 7 h ago
    Visit Dirt Moto Bikes
  • Electric Ride Co.New

    In stock

    $409.00Free shippingChecked 7 h ago
    Visit Electric Ride Co.
  • KidsomaticNew

    In stock

    $409.00Free shippingChecked 7 h ago
    Visit Kidsomatic
  • Upzy.comNew

    In stock

    $409.00Free shippingChecked 7 h ago
    Visit Upzy.com
  • Urban Bikes DirectNew

    In stock

    $409.00+ $19.89 shippingChecked 7 h ago
    Visit Urban Bikes Direct
  • Distinct DesignsNew

    In stock

    $469.00Free shippingChecked 7 h ago
    Visit Distinct Designs
  • Precision PerformancesNew

    In stock

    $469.00Free shippingChecked 7 h ago
    Visit Precision Performances
  • RenovomotorsNew

    In stock

    $613.80Free shippingChecked 7 h ago
    Visit Renovomotors
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $405.47Free shippingChecked 7 h ago
    Visit Amazon
  • Dirt Bike USANew

    Availability unknown

    $339.00Checked Oct 30
    Visit Dirt Bike USA

Store links may earn us a commission.

Mototec Blue Thunder 50cc 2-Stroke Kids Dirt Bike price history

$405.47$339.00
Oct 30Nov 13

Lowest price we've seen: $339.00 on Oct 30 at Dirt Bike USA; highest $405.47 on Nov 13. Tracked across 10 stores since Oct 30.

From Dirt Bike USA

  • 2-stroke engine with automatic centrifugal transmission
  • Easy pull start
  • Air cooled with chain final drive
  • Front inverted fork and 190.5mm mono shock rear suspension
  • Front and rear disc brakes
  • Positioned as a perfect kids starter dirt bike
Guarantee
90-day motor warranty and 30-day parts warranty covering manufacturer defects under normal use, with free replacements on valid claims.
Returns
Returns within 30 days for a full refund; items must be unused in original packaging and customers pay return shipping.
Shipping
Flat rate shipping charges.

About the Mototec Blue Thunder 50cc 2-Stroke Kids Dirt Bike

The Mototec Blue Thunder is a 50cc 2-stroke, air-cooled dirt bike sized for younger riders. It has an automatic centrifugal transmission, a pull-start engine and chain final drive. The throttle is variable twist-grip, and a throttle limiter lets the speed be restricted.

The frame is chromoly steel, and the wheels are aluminum alloy. Suspension is a front inverted fork with a 190.5mm rear mono shock. Disc brakes are fitted front and rear. The bike has higher-grade wheel bearings, longer-wearing and higher-grip tires, and a high-grade easy-start pull cord.

The seat is padded and fits a single rider. The handlebars adjust in angle but not in height. The bike is CE and EPA approved and requires assembly.

Engine
50cc 2-stroke, air cooled (competition use only)
Fuel mix
Unleaded gas and oil at a 25:1 ratio
Bore x stroke
44.02mm x 33.2mm
Rated output
2.4 hp at 7,000 rpm
Start
Pull start
Transmission
Automatic centrifugal
Chain
11T/54T, T8F size
Carburetor jets
2.00mm (main) and 0.67mm
Fuel tank
1.6 liters
Range
10+ miles per tank
Throttle
Variable twist-grip, with throttle limiter
Recommended age
13+
Max rider weight
150 lbs
Frame
Chromoly steel
Wheels
Aluminum alloy, front and rear
Tires
2.50-10, front and rear (15 inch diameter, 2.5 inch wide)
Brakes
Front disc, rear disc
Suspension
Front inverted fork, rear 190.5mm mono shock
Seat
Padded, single rider
Handlebars
Angle adjustable, not height adjustable
Seat height
22 inches; 23 inches measured from the ground
Wheelbase
35 inches (890mm)
Ground clearance
9 inches
Dimensions
50 x 23 x 32 inches
Dry weight
54 lbs
Box size
44 x 13 x 23 inches
Box weight
64 lbs
Assembly
Required
Approvals
CE and EPA approved
Warranty
30 days parts replacement

Specifications

Mini
Yes
Engine Size
50cc

Questions and answers

Is the Blue Thunder good for a beginner?
Yes, if the child can already balance and brake. The automatic centrifugal clutch means no clutch lever or gear shifting, so the rider only works the throttle and brakes. The 50cc two-stroke still has real power, so start on flat, open dirt.
Does it have gears or a clutch?
No. It uses an automatic centrifugal transmission, so the bike drives itself once the throttle opens. That makes it easier for young riders than a manual-shift mini dirt bike.
What fuel does the 50cc two-stroke need?
Two-stroke engines run on gasoline mixed with two-stroke oil, not straight pump gas. Follow the mix ratio in the owner's manual and mix fresh fuel; a two-stroke will not run correctly on unmixed gasoline.
How does it start?
It has a pull start, like a small engine. There is no electric starter or kick lever, so the rider or a parent pulls the cord to start it.
How does it compare with a basic minibike?
It adds suspension travel and disc brakes front and rear, which basic minibikes often lack. The trade-off is two-stroke fuel mixing and more upkeep than a simple four-stroke minibike.
What suspension and brakes does it have?
A front inverted fork and a rear mono shock handle the bumps. Braking is by disc at both the front and rear wheels.
Where is the Mototec Blue Thunder 50cc 2-Stroke Kids Dirt Bike cheapest?
At Amazon, for $405.47, as of our latest check.
Where can I buy the Mototec Blue Thunder 50cc 2-Stroke Kids Dirt Bike?
9 stores we checked sell it, including Amazon, Dirt Moto Bikes, Electric Ride Co., Urban Bikes Direct, Kidsomatic.

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