Skip to product information
1 of 7

helio bikes

USED Custom Phantom 4G Motorized Bicycle

USED Custom Phantom 4G Motorized Bicycle

Regular price $1,499.99 USD
Regular price $2,999.99 USD Sale price $1,499.99 USD
Sale Sold out
Shipping calculated at checkout.

USED Phantom 4g Custom with many special parts, a real head turner! The frame that we use is slightly longer than the average and provides a nice comfy stretched out riding position. 

This USED 4 Stroke Bike runs very welland has had an overall quality checkup. The frame has some nicks and scratches but nothing that affects performance. Specs of this bike include

-49cc 4 stroke HS motor with 4g gearbox 
-Cool custom header exhaust
-Front spring suspension fork with front stormy archer drum brake and rear coaster brake
-Ape Hanger handlebars
-Custom painted gas tank with cap lock
-Motor Driven Headlight
-CNC motor Mount
-Tool canister
-Custom Spring Seat
-Comfy 26x2.3 tires on 12G spoked wheels


 Sporting a quiet 49cc 4 stroke motor with belt drive transmission, this bike can propel you to speeds up to 40mph while consuming 140+ MPG. If you do the math, an average car gets 20 mpg and at $4 a gallon a 20 mile commute to work costs you $8. Purchasing a Helio Bike is not only fun but can save you money! That same commute only costs you $1.30 and in 9 months you have already paid off your bike! Helio has built hundreds of bikes and has taken the time to upgrade parts and use special techniques for installation of a well made product. Build time takes an average 7-15 business days (but can take up to a month during peak times of the year) to Test and prepare to ship.. This bike will be shipped in two boxes and requires minimum assembly (handlebar, muffler, front tire and remount motor on pedestal).  Basic tools required.




Type Aluminum
Size 31" Straddle height
Type Heushang 142f 49cc
Power Output 2.25 HP
Gearbox 4G Belt Drive
Front Front Drum Brake
Rear 7spd Rear Coaster brake
Springer Fork
Dry 63lbs



DISCLAIMER: Operating this motorized bicycle or bicycle engine kit involves some risk of bodily injury . Buyer accepts responsibility for any and all vehicle operation that may lead to personal injury, economic loss, social distress, other losses, costs and damages. is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit . This kit is not recommended for use by persons under 16 years of age. Obey all traffic regulations. Always wear a helmet while riding. Remember that you are riding a motorized bicycle and other traffic may not be able to see you. Never operate your motorized bicycle on a pedestrian through way or sidewalk while the engine is running. Never operate your motorized bicycle in an unsafe manner. Check local and state laws before riding on streets. Engines larger than 49cc are not legal to operate on the street.

View full details

Check us out!

We are always having fun building and testing our bikes. See some how-to instructional videos and some of our bikes in action.

Our Youtube Channel