Search  for anything...
DNYSYSJ

DNYSYSJ 100cc 2-Stroke Bicycle Engine Kit - Gas/Petrol Motorized Bike Conversion Kit for 26"/28" Bikes

  • Based on 24 reviews
Condition: New
Checking for the best price...
$128.00 Why this price?
Save $1,071.00 was $1,199.00

Buy Now, Pay Later

As low as $21.33 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by GANISM
Arrives Oct 23 – Oct 25
Order within 18 hours and 11 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • COMPLETE 100CC BIKE ENGINE KIT -- This is a full set of 2-stroke air-cooled 100CC single-cylinder gasoline bicycle engine, including all the parts and accessories that can turn an ordinary bicycle into an motorized bicycle. Using this set of bicycle engine kits, you can transform the bicycle to your liking.
  • EXCELLENT PERFORMANCE -- 50mm bore single piece cylinder/head (increased weight capacity, lower operating temps, easier starting, sustained power output across varied rpm range). 4 bolts attach the engine to your bike frame and this bicycle engine kit comes are 8mm vs the standard 6mm. That means the mounts are twice as strong and twice as secure.
  • APPLICABLE BICYCLE TYPES -- The gas engine kit is suitable for most 26" and 28" ordinary bicycles with a large diamond frame. It is very suitable for upgrading from ordinary bicycles to motorized bicycles, and you can enjoy faster riding.
  • UPGRADED TUNABLE HIGH PERFORMANCE CARBURETOR -- Choke lever on the handlebars, Main jet. (Can be re-jetted), Pilot jet, Copper oil needle, Idle RPM Screw, Idle Air Screw delivers more fuel with the choke on, instead of restricting air. Great for cold weather starts!
  • LOW FUEL CONSUMPTION -- 150 miles per gallon, very energy-efficient and economical. Engine requires 8oz 2 Stroke oil per gallon of gas during Break In Period.

Description

Description: Upgrades Include：

Bike Type: BICYCLE


Age Range (Description): Adult


Brand: DNYSYSJ


Number of Speeds: 2


Color: 100CC 2-Stroke


Wheel Size: 26 inches


Suspension Type: Dual


Special Feature: 44 Tooth Sprocket, Red Speed Carburetor, Upgraded CDI


Size: Large


Wheel Width: 28 inches


Bike Type: BICYCLE


Number Of Speeds: 2


Suspension Type: Dual


Additional Features: 44 Tooth Sprocket, Red Speed Carburetor, Upgraded CDI


Specific Uses For Product: Motorized bicycle conversion


Power Source: gasoline


Bicycle Gear Shifter Type: Twist Grip


Skill Level: Intermediate


Bicycle Drivetrain Type: chain_drive


Electric Assist Type: throttle assist


Number of Handles: 2


Wheel Size: 26 inches


Size: Large


Wheel Width: 28 inches


Age Range Description: Adult


Brand Name: DNYSYSJ


Model Number: OT4175


Unit Count: 1 Count


Color: 100CC 2-Stroke


Theme: Motorcycle


Warranty Type: Limited


Maximum Weight Recommendation: 397 pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 23 – Oct 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • The instructions suck but YouTube teaches all
Wonderful for a project or something to do in your spare time like a fun puzzle. The worst in structuring book I’ve ever used I relied on YouTube for all directions and learned quite a bit extra that comes in handy. This will start as a project to get a motorized bike but end in having a new hobby you enjoy. I’m already thinking about buying another kit and a new bike to either make something ridiculously fast or something like a cruiser that’s repainted and cool to look at I don’t know yet the options are endless ... show more
Reviewed in the United States on June 18, 2026 by Justin Roach
    • Motor works if you change the spark plug
Ok just change your spark plug to an E3 brand and you will be fine specifically an E3.12 and be careful when mounting the sprocket the a coaster brake system bike and make sure to bore out the inside of the gear to fit over the coaster brake bearing cover and you will be fine and if you make the mistake of dripping or breaking nuts and bolts just get some new ones at your local Home Depot or any local hardware store and you will be fine. Just be patient with installing the motor and you will be fine DO NOT RUSH THE INSTALL PROCESS AND BE PATIENT. Also rinse your gas tank out with the proper fuel/oil mixture before you mount it or use it to make sure there is no trash and you will be ok. Follow the included instructions and you will be ok this motor has surprised me and my son who I originally bought the motor for since he loves motorcycles ... show more
Reviewed in the United States on June 12, 2022 by kenneth palombo
    • Decent first time builder kit
Everything functions pretty well after the month I have had it on the bicycle. Already upgraded the sprocket and mounting from “rag” gasket, chain tensioner and clutch lever. This has helped a lot. Kit has potential.
Reviewed in the United States on February 18, 2024 by jeremy bryner
    • great product backed by great service
Review Image by Richard B.
had some issues assembling it, part where damage, contacted seller got ahold of me quickly and resolved my issues with great after sale service.. this is my mode of transportation mostly an understood the concern, communication is best seen on amazon yet. oh did mention after sales help.. yup great seller top notch help after the purchase.. will be getting another one of these kits be ordering from this seller again with out doubt.. ... show more
Reviewed in the United States on December 10, 2024 by Richard B.
    • Incredible Customer Service
The engine did not fit the bike that I have so I reached out to the company to assist in the return process and they were very helpful and helped make the experience as seamless as possible
Reviewed in the United States on September 13, 2023 by Christina
    • I love it
I love it
Reviewed in the United States on July 23, 2022 by Kristi
    • Horrible instructions
The instructions are incomplete with bad/lack of illustrations. I haven’t finished assembling it but already I had a buy another fuel filter because the in box one was broken.
Reviewed in the United States on November 26, 2023 by Joshua Smith-Jamison
    • Awsome kit
Very good kit comes with everything you need very good customer service just make sure that it fits the bike or be ready to do some modifications but as long as it fits it is a very awsome motor will buy again if I ever wind up building another bike
Reviewed in the United States on April 16, 2023 by Scott williams

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...