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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Zonsen(Zongshen) 250cc OHC Air Cooled Engine For Atomik Thumpstar Dirt Bike MotorbikeDescription: Genuine Zonsen(Zongshen) 250CC vertical engine with kick electric start It is a direct bolt on replacement for most Chinese dirt bikes running 200 250cc single cylinder air cooled motors such as Thumpstar, Atomik, DHZ, Foxico, XTM, etc Specifications: Type: 1 cylinder, vertical, 4 stroke, air cooled kick start and electric start OVER HEAD CAM Bore x Stroke: 65mm x 67mm Displacement: 229ml Max. Power & Corresponding Speed: 11. 5KW 7500rpm
Description:
- Genuine Zonsen(Zongshen) 250CC vertical engine with kick/electric start
- It is a direct bolt on replacement for most Chinese dirt bikes running 200-250cc single cylinder air cooled motors such as Thumpstar, Atomik, DHZ, Foxico, XTM, etc
Specifications:
- Type: 1-cylinder, vertical, 4-stroke, air-cooled kick start and electric start - OVER HEAD CAM
- Bore x Stroke: 65mm x 67mm
- Displacement: 229ml
- Max. Power & Corresponding Speed: 11.5KW/7500rpm
- Max. Torque & Corresponding Speed: 17.5N.m/5000rpm
- Min. Fuel Consumption: <367g w.h="" pollutant="" index:="5.5" g/km="" (co),="1.2g/km" (hc)="">
- Clutch Type: Manual wet clutch
- Start Mode: kick start and electric start
- Compression: 9.0:10
- Engine Oil: 900ml, 15W/40-SE, 4 stroke
- Oil GEARS: 5 SPEED MANUAL CLUTCH, 1 down 4 up
- SPROCKET: 15T 428 CHAIN
- Dimension: 458 x 358 x 324mm
-
Weight: 35kg
Listing includes:
- 1 x ZONGSHEN 250CC VERTICAL ENGINE
- 1 x Kick Starter Lever
- 1 x Gear Shift Lever
- 1 x Manifold set Package
- Wiring loom harness (option only)
- Kill switch (option only)
- Key switch/ 2keys (option only)
- NGK spark plug (option only)
- CDI (option only)
- Coil with lead (option only)
- Rectifier (option only)
- Solenoid (option only)
- JK PZ30 carby (outlet diameter: 30mm, bolt eye-eye: 48mm, bolt diameter: 6.5mm) (option only)
- air filter 42mm (may vary depending on stock availability)(option only)
Important note:
- Zongshen has rebranded to Zonsen — it's the same company under a new name. The engine you will receive may bear the marking or logo of either ZONGSHEN or ZONSEN, or it may not have any logo at all.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1159 reviews
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Product Reviews
★★★★★ 5
They are her favorites
Size: Medium (VALUE 2-Pack), Style: Beef, Size: Medium (VALUE 2-Pack), Style: Beef
We’ve had many dogs, many very destructive ones and wish I had these years ago. The hard toys get sharp edges, this toy is the best and yes is far better than the other red ones. My bulldog wants tug of war for 30 min to an hour every night. We’ve gotten tennis elbow, tendinitis, and pulled muscles holding onto this thing. She has tons of toys but 9pm and this is only option for her. We don’t get a choice. Easy to hold, well for a few min until your hand gets tired. First you one was about 3 years ago and she’s only on her third one. They last forever, easy to clean, and aren’t sharp edges. Seriously, better than any toy sold anywhere. My phone has hundred of pictures of Pickle holding this. She’s doing it right now. If you have a strong destructive dog that takes pride in destroying toys, ruin their confidence and get them this one.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Perfect Toy for Large Dogs
Size: Medium, Style: Cheddar Cheese
I don’t normally leave reviews, but this toy is stellar and is a new favorite for my dog! She is a large dog (70lbs cattle dog lab mix) and I accidentally bought a medium, but it actually is a great size for her! So far this stands up to her chewing, but I may need to update in a few weeks to speak for durability but it really does feel solid. Most toys don’t last an afternoon once she starts chewing, so this has already won in that regard. The shape is perfect as well. She can gnaw at it, squeak, play fetch, play tug. It bounces when she throws it around herself. The fact it smells like stinky cheese is just an added bonus for her. All around, a very well designed dog toy!
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Reviewed in the United States on December 27, 2023
★★★★★ 4
Boxer Baby’s Favorite
Size: Jumbo, Style: Beef
This toy is my sweet girl’s absolute favorite. It was the first thing we gave her when we brought her home, and she has been obsessed with it since. She brings it from room to room, inside and outside. I would highly recommend this toy, however, we have gone through six in one year. They’re not very durable, especially with our boxer mix, who is a very heavy chewer. I’ve gotten the red and the blue, and she will only take red, which is fine with me because the blue STINKS. The red stinks too, but less so. The squeak is very loud, but she genuinely loves it so much that it’s hard to be annoyed by it. I’d say give the toy a try, you may be unintentionally giving them their favorite thing ever lol.
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Reviewed in the United States on October 2, 2025
★★★★★ 1
Design Hazard
Size: Medium, Style: Bacon, Size: Medium, Style: Bacon
I have one of these in a larger version I picked up at the petstore. This one I do not recommend. There is a whole in the center where the pet bites down and my doggies' teeth kept getting stuck in it. If you've ever had a toy get stuck in your pups mouth, you've seen how thet go nuts trying to get it out.
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Cane Corso approved
Size: Jumbo, Style: Beef
I have two Cane Corsos, One is 80 pounds the other is 120 pounds. They can seriously destroy some toys very easily. These chewies have actually lasted for over six months at this point, which is pretty much miraculous. I bought them some more just so I always had plenty of them laying around as this discourages them from getting into trouble, chewing things they shouldn’t be chewing. They walk around with these and their mouths all the time and even after all these months, the squeakers still work. These are really high-quality and if you have a dog that just destroys toy toy, I highly recommend these. Even though they’ve had these for months, they go back to them to chew on and play with , it’s also really funny because they walk around with one and hanging out of their mouth and it looks like they’ve got a stogie hanging out of their mouth. If these toys can keep the interest and survive being mauled by these two giant Destructo mutts, then they must be really, really tough. I highly recommend these for super chewers. These even a hold up to having one dog, grab each end and then play tug-of-war with it. These guys can Easily go through A cow huff every day, but these toys are still going strong
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Reviewed in the United States on August 10, 2024
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