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Twenty5 DS Chopper Stretch Cruiser E – Bike, 26″ Wheels, 800W Motor, Disc Brake, for Men, Black

Original price was: $80.54.Current price is: $37.39.
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Ubesgoo 2 – Stroke 50cc Engine Kit Fits Most 26″ or 28″ Wheeled Bikes with V – Frame for Bicycle Mountain and Road Bike Gas Motorized Motor Bike

Original price was: $56.48.Current price is: $36.02.

SKU: IMOI78105 Category:
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Description

Tips:
Before install the engine, please lubricate the inner components first and you should pour some lubricating oil into the cylinder bore from the spark plug hole, then drain off the lubricating oil and install the engine. Please keep in mind that the motor will use a mix of gasoline and oil. The oil is used as a lubricant. Without it, the performance andlongevity of the motor will be reduced.

-This 2-stroke 50cc engine kit is perfect to upgrade the regular bike to a motorized bike, you can enjoying riding at a faster speed, which can reach 30km/h as fast as a motorcycle or scooter

-Fits most 26″ or 28″ wheeled bikes with V-frame. The frame should have 9-11″ of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around an 1″)

-Key parameters: Max. power 1.6Kw/6000r/min (3 horsepower/6000r/min),Super fuel-efficient, only consuming 1.5L fuel/100km

-Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30); Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km

-Mode of Engine: Single cylinder, air-cooling, 2-stroke Natural air cooling; The rider needs some basic hardware tools, skills and around 2-3 hours to install. Add some lubricant into the air cylinder before starting

Specifications:
1. Engine Mode: Single Cylinder, Air-cooling, 2-stroke
2. Bore & Stroke: 40mm x 38mm=48 cm3
3. Rated Power: 1.15Kw/5000r/min (1.6 horsepower/5000r/min)
4. Max. Power: 1.6Kw/6000r/min (3 horsepower/6000r/min)
5. Ignition Mode: CDI
6. Compression Ratio: 6:01
7. Driving Ratio: 18:01
8. Fuel Type: No.90
9. Type of Sparking Plug: Z4C 14MM
10. Volume of Oil Consumption: 1.5L/100km
11. Type of Clutch: Friction Plate / Dry
12. Cooling Mode: Natural Air Cooling
13. Speed Limitation: 30km/hour
14. Lubrication Oil: Oil for 2-stroke Petrol Engine (or Oil for 10W/40.10W/30)
15. Mixing Ratio of Fuel and Engine Oil: 16:1 for new sets, 20: 1 after Running 500km
16. Net Weight: 22.05 lbs / 10 kg
17. Suitable for: 26″ or 28″ Bicycle

Package Includes:
1 x 50cc Engine Kit

Reviews

★★★★★

"Came earlier than the promised date. The finish is clean with no rough edges. Brought it to a tailgate and it performed. Five stars from me."

Barbara Chen Barbara Chen May 1, 2026
★★★★★

"Went with the small and the build quality is better than the photos suggested. Brought it camping and it held up fine. Worth the money."

Laura Moore Laura Moore Jul 15, 2026
★★★★☆

"Ordered the 3-pack on sale and the battery easily lasts a full day of use. Brought it camping and it held up fine. Exactly what I needed."

Frank Perez Frank Perez Aug 5, 2026
★★★★★

"Packaging was secure and nothing moved. Build quality is better than the photos suggested. Running it through my routine for a month. Worth the money."

David Moore David Moore Jul 19, 2026
★★★★★

"Order processed quicker than the estimate. Cushioning is supportive after hours. Carried it through a busy work week. Slightly heavier than expected, still well balanced though. I'm in Nashville, TN. Happy with my purchase."

Virginia Chen Virginia Chen Jul 21, 2026
★★★☆☆

"Went with the XL and the fabric is surprisingly breathable. Took it to the lake house for the weekend. The strap is a little long for me, easy enough to adjust. Would recommend."

Michael Martin Michael Martin Jun 6, 2026
★★★★☆

"Picked the matte black and the screen is sharp and bright in daylight. Brought it to a tailgate and it performed. Customer service was helpful when I had a question."

Tyler Young Tyler Young May 4, 2026
★★★★☆

"Chose the king size and the cushioning is supportive after hours. It's handled my daily dog walks without issue. I'm in Oklahoma City, OK. Happy with my purchase."

Joseph Bailey Joseph Bailey May 13, 2026
★★★☆☆

"Picked the matte black and the sound is clear without any static. It keeps up with my home office setup. Instructions could be a bit clearer, but I figured it out. Glad I went with this one."

Jacob King Jacob King Jul 4, 2026
★★★★★

"Ordered the refurbished unit and the screen is sharp and bright in daylight. I've been using it daily for about two weeks now. Runs a touch small but nothing a size up didn't fix. Exactly what I needed."

Deborah Allen Deborah Allen Jun 25, 2026

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