why does the back wheel spin but will not run when weight is on the bike

Because Razor changed the bike..no suspension..mine did that on the first day. Junk! Razor should be ashamed..

does this bike have training wheels?

Nope, I am going to get some for my son. He couldn’t ride a regular bike but does much better on this. He won’t put his feet in the pegs, he lets them drag a bit. So training wheels would be a good idea.

What age chikld is this designed for?

My kids could ride this about age 8) when we got it and my oldest was 8). I would say being able to ride this bike is as more about being able to maneuver/support the weight while not at a 10+ mph speed vs anything relating to height or etc. I’m a 5’7”, 120# woman and it’s short for my legs but zips me around easily. My husband is 220? The bike was enthusiastic but was able to manage him as well. I would consider the weight of the bike (85# or more?) and consider whether there will be anyone available to help your kiddo get the bike upright if it tips. Maneuvering the bike through a tight space in the garage is a challenge too (size + weight). Staying upright on these dirt bikes is fairly effortless - easier than riding a bicycle. We also have the blue/white version and it also lugs my adult weight just fine, but it is def sized for a little kid. The bikes are just small. Short. They handle weight. They don’t feel like a real dirt bike or bicycle ergonomically. My 2 yo, 65 lb golden can outrun the bikes. Even going downhill where we maybe hit 20-25 mph? It’s just not fair we humans have to be so slow - no wonder we love roller coasters and these little razor bikes. Bahaha. Anywho: if your kid is 8ish - this size will technically work for them. 9? For sure. It depends on your kiddos personality and if they’ll be scared to take off or not. Again: it’s easier than riding a bike. Very heavy.

how tall is the dirt bike

My son is 3. It is 15" from the ground to his crotch. He can touch the ground on both sides when standing on his toes. Not tippy toes but far from flat footed.

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⚡ Own the dirt. Rule the ride.

SAFETY FIRST - Comes with a permanently fixed UK safety-approved adapter for worry-free rides.
BUILT TO LAST - Rugged alloy steel frame engineered for durability and rough terrain.
ENDURANCE POWER - Ride nonstop for up to 30 minutes on a single charge—no pit stops needed.
HIGH TORQUE MOTOR - Chain-driven motor delivers powerful acceleration for confident control.
THRILL READY SPEED - Hit adrenaline-pumping 22 km/h and own the dirt track.

The Razor Dirt Rocket MX 350 is a high-performance electric bike designed for young riders aged 13 and up. Featuring a durable alloy steel frame, a high-torque chain-driven motor, and speeds up to 22 km/h, it offers up to 30 minutes of continuous riding fun. Safety is prioritized with a UK-approved fixed adapter, making it the perfect blend of power, endurance, and reliability for beginner dirt bike enthusiasts.

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Age range	Kid
Color	Blue
Size	M
Style	Dirt Rocket MX 350
Frame material	Alloy Steel
Height	31 inches
Item display length	44 inches
Weight	30.84 kg
Material type	Alloy Steel
Number of items	1
Number of pieces	1
Power source	Rechargeable Battery
Seasons	Evergreen
Skill level	Débutant
Sport	Cycling
Wheel size	30 Centimetres
Included components	Manual
Batteries included?	Yes
tech_spec_battery_description_toys	Two 12V SLA batteries
Brand	Razor
Maximum weight capacity	64 Kilograms
Department	Children's
Manufacturer	Razor
Item model number	15128090
Product Dimensions	113.03 x 62.23 x 78.74 cm; 25 kg
ASIN	B0007MZV3C

Razor Dirt Rocket MX 350 Electric Bike, Blue

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