125cc engine
Skip it49/100a small market ($37K/yr) — 125cc engine doesn't clear our bar today.
Market/yr
$37K
Growth (1y)
+186.2%
Products
18
Brands
15
was 16 a year ago
Sellers
16
Price range
$148.00–$479.58
Returns
0.0%
Rating
4.1★
Skip it
Scored 49/100 across market size, growth, competition, quality gap, and returns.
Demand
Weekly Amazon search volume, last 104 weeks — +186.2% year over year.Seasonality
Monthly demand index across the year — 1.00 is average.Peak months: Apr, May · busiest ÷ quietest = 1.6×
Competition
- LIYUANJUN42%
- TBVECHI10%
- Knwigoe8%
- NAZEAOB7%
- Offabing6%
- siohdagu4%
- Other (9 brands)23%
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them. 15 brands and 16 sellers compete here.
Brands
15 falling
was 16 a year ago
Sellers
16
Top 5 brand share
73%
Product shelf
All 18 tracked products in this niche.

LIYUANJUN 125CC 4-Stroke Engine Motor Kit Single Cylinder Air-Cooled Motor Engine for Honda CRF50 XR50 CRF70 Z50R QR50 Dirt Pit Bike Engine Kit with Manual Clutch and PZ22 Carburetor
LIYUANJUN
$148.704.3★71 reviews

LIYUANJUN 125CC Engine Motor 4-Stroke Semi Auto Engine for Go Kart ATV Quad Bike Buggy CDI/Air Cooling System Single-Cylinder with Reverse and 3 Forward Electrical Start
LIYUANJUN
$181.484.0★29 reviews

Knwigoe 125cc 4 Stroke Engine Motor Complete Kit Electric Start ATV Motor Semi-Auto Transmission Dirt Bike Engine with CDI Ignition Single Cylinder for Honda Pit Bike Motorcycle Go Kart
Knwigoe
$163.624.0★31 reviews

TBVECHI 4-Stroke 125CC Air-Cooled Engine Motor with Kick Start and Reverse for Honda CRF50 CRF70 XR50 XR70 Dirt Pit Bike Motorcycle Spark Plug A7TC
TBVECHI
$179.024.4★10 reviews

125cc 4 Stroke Engine Motor CDI Pit Dirt Bike Single Cylinder Manual Clutch Engine Motor Kit Fit for Honda CRF50 CRF70 XR50 XR70 Z50 Spark Plug A7TC Carburetor PZ16J
Offabing
$148.004.0★10 reviews

125CC 4-Stroke Semi Auto Engine Motor ATV Quad Engine Motor Complete Kit 4 Speed Electric Starter Motorcycle Engine W/Reverse Electric Starter Single Cylinder Air-Cooling(Black)
siohdagu
$172.903.9★23 reviews

NAZEAOB 125cc 4 Stroke Engine Motor Semi-Auto ATV Engine Motor Kit with CDI Ignition & Electrical Start Single Cylinder Air-Cooling Motorcycle Engine with 3 Forward and Reverse
NAZEAOB
$193.605.0★1 reviews

TBVECHI 140cc Engine Motor For Pit Dirt Bike SSR Apollo Coolster 125cc XR50 ATC70 ST90K1 CS90 4-Stroke Engine Motor Replacement Kits
TBVECHI
$218.153.8★15 reviews
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Perfect for my replacement motor”
“a 125cc 4 speed motor for 250$ sounds like a good deal”
“Works great and runs smooth”
“Fits”
“Definitely has compression”
“Robust Build Quality”
“ran great, was easy to install”
“Been going strong so far”
“is super easy”
“As described and no issues so far”
What buyers complain about
“i had a issue with install”
“Fail to make it work”
“the delivery Person could not follow instruction”
“Junk”
“It broke”
“The motor mount holes allow the motor to shift causing constant loosening of the chain”
“Cracked case”
“Did have a oil leak”
“Runs terrible, blows oil, and gets terribly hot”
“Be mindful as it is totally unusable if it cannot hold any oil”
Top return reasons
- Defective Material/Parts19%
- Motor Issues18%
- Compatibility-Overall12%
- Size-Overall11%
- Leak-Proof11%
- Functionality-Overall10%
- Compression5%
- Flammable2%
- Rusts/Corrodes2%
- Ease Of Use2%






