China Underbone Motorcycle & OFF Road Motorcycle Manufacturer

A wide selection of high quality products for you

VIDEO

Lightweight Underbone Motorcycle 770mm Seat Height 140mm Urban Commuting

Engine Type:	Single-cylinder, Horizontal, Air-cooled
Displacement:	123.7 Cc
Max. Power:	6.3 KW @ 7,500 Rpm

3.1L Fuel Tank Underbone Motorcycle Daily 1920MM Urban Commuter Motorcycle

Engine Type:	Single-cylinder, Horizontal, Air-cooled
Displacement:	107 Cc
Max. Power:	5.2 KW @ 8,000 ± 500 Rpm

Semi Automatic Clutch Euro Underbone 150kg Load Enduro Type Motorcycles

Engine Type:	Single-cylinder, Horizontal, Air-cooled
Displacement:	107 Cc
Max. Power:	5.2 KW @ 8,000 ± 500 Rpm

VIDEO

CDI Ignition Custom Underbone Trail Bike Lightweight 78km/H

Engine Type:	Single-cylinder, Horizontal, Air-cooled
Displacement:	107 Cc
Max. Power:	5.2 KW @ 8,000 ± 500 Rpm

VIDEO

123.7cc Underbone Motorcycle Electric Kick Start Enduro Cross Bikes

Engine Type:	Single-cylinder, Horizontal, Air-cooled
Displacement:	123.7 Cc
Max. Power:	6.3 KW @ 7,500 Rpm

271cc OFF Road Motorcycle 6 Speed Manual Battery Powered Dirt Bike

Starting System:	Kick Start And/or Electric Start
Engine Type:	4-stroke, Single-cylinder
Top Speed:	120 Km/h

4 Auxiliary Lights OFF Road Motorcycle 115km/H Hand Guards Street Legal Dirt Bike

Suspension Front:	Telescopic Fork
Tire Size Front:	70/90-17
Starting System:	Kick Start And/or Electric Start

50cc Urban Light Street Bike 4 Speed Electric Start 83kg City Riding Entry Level Road Bike

Engine Type:	Single Cylinder, Air Cooled
Displacement:	49.5 Cm³
Max Power:	2.9 KW / 9000±500 Rpm

Who We Are

Chongqing Summit Yttrium Power Technology Co., Ltd.

Chongqing Summit Yttrium Power Technology Co., Ltd. is a technology-driven company specializing in the development, manufacturing, and global distribution of high-performance electric motorcycles and advanced power systems. The company is built upon the industrial foundation of Zhufeng Motorcycle Group, an established motorcycle manufacturer founded in 1998 with more than two decades of experience ...

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What They Say

Thank you. Everything is ready. Our staff will contact you within 24 hours. If you need immediate assistance, please feel free to call or contact us via WhatsApp: +0086-13983007812

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Best Sellers

The most popular products

10kW Electric Dirt Motorcycle SKYLEAP 72V 40Ah Electric Dirtbike

Frame & Swingarm Material:	High-strength Carbon Steel
Motor Type:	Air-cooled Permanent Magnet Synchronous Motor
1st Transmission:	Chain Drive

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City Electric Underbone Motorcycle Commuting E Cooper 6kw 84km/H Dirt Bike Enduro

Motor Type:	Permanent Magnet Synchronous Motor
Rated Power:	3.0 KW
Peak Power:	6.0 KW

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3000W Electric Performance Motorcycle Carbon Fiber Electric Dirt Bike SAMURAI NOIR

Frame & Fork Material:	Carbon Fiber
Motor Brand:	DENZEL D7500 (Germany, Produced In China)
Controller:	Denzel Orient DY300A (Germany, Produced In China), With Bluetooth, Sport/ECO Mode, AEBS (Analog Electric Brake)

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5 Speed Adventure Motorcycle Electric Start 138kg Adv Big Bike

Displacement:	225 Cc~300 Cc Optional
Max Power:	12 KW @ 7500 ± 500 Rpm
Gear & Clutch:	5-speed

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225cc Adventure Motorcycle 12kW ADV Off Road Motorcycle Adventure Tours

Displacement:	225 Cc
Max Power:	12 KW @ 7500 ± 500 Rpm
Gear & Clutch:	5-speed

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225cc Street Bike 5 Speed Manual Street Legal Motorcycle 150kg Urban Commuter

Displacement:	225 ML
Max Output Power:	12 KW / 7500 ± 500 R/min
Max Torque:	17.5 N·m / 7500 ± 500 R/min

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Red Black Street Dirt Bike Riding Motorcycle 271.3cc Off Road Machine

Engine Type & Cylinder Arrangement:	Single-cylinder, Vertical, Air-cooled
Displacement:	271.3 Cc
Front Suspension:	Hydraulic Disc Fork

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Durable 107cc Underbone Motorcycle with Electric & Kick Start, 12V 8-Pole Full-Wave AC Magneto and 150kg Maximum Load Capacity

Engine Type:	Single-cylinder, Horizontal, Air-cooled
Displacement:	107 Cc
Max. Power:	5.2 KW @ 8,000 ± 500 Rpm

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News & Cases

Here are the latest news and cases, so that you can know more about us

16/03/2026

Successful Appearance at Canton Fair: SUMMIT YTTRIUM POWER Goes Global

On April 15, 2023, the 133rd Canton Fair, known as China’s No.1 Trade Fair, officially kicked off in Guangzhou. This session of the China Import and Export Fair is the largest in history, fully open to domestic and foreign buyers. It has attracted merchants from home and abroad, who come to explore ...
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16/03/2026

EICMA 2024 | SKYLEAP Takes the Stage: All-New Off-Road Electric Motorcycle Debuts

Since its first edition in 1914, EICMA boasts a long history of 110 years and is widely regarded as the world’s most important motorcycle exhibition. With a grand scale covering 10 pavilions, the show brings together 770 exhibitors. It gathers manufacturers, suppliers and distributors of motorcycles...
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18/03/2026

What is an Underbone Motorcycle

An underbone is a lightweight motorcycle that utilizes a structural tube frame, usually covered with plastic panels, featuring a step-through design where the fuel tank is located under the seat, rather than between the rider’s knees. Known for efficiency and stability, they feature 50cc-150cc ...
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Introduction

Chongqing Summit Yttrium Power Technology Co., Ltd. is a technology-driven manufacturer specializing in high-performance electric motorcycles
Service

Our core services focus on customization and OEM, adapting to global needs.
History

Founded in 2021, the company has been committed to producing high-quality products and improving users’ riding experience since its establishment.
Our Team

We have a production team of over 100 people, 28 technical staff responsible for R&D, quality control and after-sales technical support

Get In Touch

Building 4, No.2 Xiangyu Road, Shuangfengqiao Subdistrict, Liangjiang New Area, Chongqing

charles.cui@yipower.com.cn

+1 6479490514

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Products

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China Underbone Motorcycle & OFF Road Motorcycle Manufacturer

10kW Electric Dirt Motorcycle SKYLEAP 72V 40Ah Electric Dirtbike

City Electric Underbone Motorcycle Commuting E Cooper 6kw 84km/H Dirt Bike Enduro

3000W Electric Performance Motorcycle Carbon Fiber Electric Dirt Bike SAMURAI NOIR

5 Speed Adventure Motorcycle Electric Start 138kg Adv Big Bike

225cc Adventure Motorcycle 12kW ADV Off Road Motorcycle Adventure Tours

225cc Street Bike 5 Speed Manual Street Legal Motorcycle 150kg Urban Commuter

Red Black Street Dirt Bike Riding Motorcycle 271.3cc Off Road Machine

Durable 107cc Underbone Motorcycle with Electric & Kick Start, 12V 8-Pole Full-Wave AC Magneto and 150kg Maximum Load Capacity

1900mm Underbone Motorcycle 4 Speed Bike Lightweight Enduro Motorcycle 5500rpm

225cc OFF Road Motorcycle Air Cooled 5 Speed Enduro Motorcycle Bike 12kW

Daily Riding Street Bike Street Glide Motorcycle For Control Road Master

125cc Mini Cruiser Motorcycle 7Kw 8000r/Min Urban Riding Gas Motorcycle For Adults

6000W 72V Electric Performance Motorcycle 130km Electric Enduro Dirt Bike

Blue Underbone Race Bike 3.9L Tank 1910mm Air Cooled Single Cylinder Motorcycles

4.8KW 1910MM Underbone Motorcycle Aluminum Wheel Enduro Street Bike

Air Cooled Top Underbone Motorcycle Single Cylinder Engine Entry Level Enduro

Single Cylinder Underbone Motorcycle Semi 80km/H 8500rpm Automatic Motorcycle Motorbike

7.2Nm Trail Enduro Motorcycles 150kg Load Capacity Automatic Enduro Motorcycle

automatic underbone motorcycle red 12V 5W custom enduro motorcycles

1900 X 700 X 1070mm Perfect Commuter Motorcycle For Work Commute

Entry Level Single Cylinder Motorcycle 1.9M 107cc Road Bikes

80km/H Underbone Motorcycle ≥27° Climbing Ability City Countryside Enduro Off Road Bike

Semi Automatic Enduro Bike Motorcycle 5000r/Min Enduro Bike Adventure

Aujustable Speed Air Cooled Powerful Single Cylinder Motorcycle 93kg Net Weight

5.2kW Top 10 Underbone Motorcycle 7.2Nm Underbone Motorcycle Modified ≥22° Climbing Ability

12V 5Ah Highway Commuter Motorcycle For City Commute Horizontal Air Cooled

1255mm Wheel Modified Underbone Motorcycle 78km/H Commuter Motorcycle

1920 X 720 X 1140mm Underbone Motorcycle Single Cylinder Engine Motorcycle