SKU: 76329024393
pedal bike engine

pedal bike engine 79cc Monster 80 Bike Engine Kit

Sale price$18.97 Regular price$21.08
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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

pedal bike engine 79cc Monster 80 Bike Engine KitNOW IN STOCK! 79cc Monster 80 COMPLETE Bike Engine Kit 4 Stroke A bigger kit to get your bike moving. This setup includes a CNC single speed transmission with a shaft keyed centrifugal clutch. Using the motor gas tank and exhaust which both can be upgraded (see 79cc Monster 90 kit). 4 Stroke engine kits are very different from 2 stroke kits in many ways. Building a 4 stroke bike is a little more involved then the two strokes, the extra effort is worth

NOW IN STOCK!


79cc Monster 80 COMPLETE Bike Engine Kit - 4-Stroke

A bigger kit to get your bike moving. This setup includes a CNC single speed transmission with a  ⅝ shaft keyed centrifugal clutch. Using the motor gas tank and exhaust which both can be upgraded (see 79cc Monster 90 kit).

4 Stroke engine kits are very different from 2 stroke kits in many ways. Building a 4 stroke bike is a little more involved then the two strokes, the extra effort is worth it. Pull start engine, not push start like the 2 strokes. Overall this type of engine is more reliable with more power and torque. With some of the larger cc motors, the top speeds far exceed the 2 strokes. Since these motors are larger in cc they are also larger in size and weight. Almost all bicycles will need to use a wider crank setup to clear the motor, the stock arms and pedals will hit the motor when pedaled as a regular bike. One piece cranks will also require a bottom bracket conversion set as well (not included).

This style of the engine might need slight modification to the bikes and will not fit all frames.

Advantages of 4 Stroke Bicycle engine kits:

  • Use straight gas (no mixing oil with gas)
  • More Horsepower
  • More Torque
  • Quieter Engine

This complete kit includes:

  1. 78.5cc - 79cc 3HP OHV GasBike Horizontal Shaft Gas Engine 
  2. Transmission for 78.5cc - 79cc OHV GasBike Horizontal Shaft Engines
  3. Heavy Duty Bicycle Mounting Kit for 78.5cc - 79cc or 212cc OHV Predator Horizontal Shaft Engines
  4. Throttle Handle
  5. Throttle Cable - 50"
  6. 44 Tooth Sprocket
  7. Pineapple Bushing Kit
  8. 415 Heavy Duty Chain
  9. Idler Pullet Chain Tensioner with 2 Bolts
  10. Throttle Linkage

The construction and engineering on this unit have been upgraded for improved durability and service life. This tough gas engine features a durable cast iron cylinder that withstands wear and abuse, fuel shut off for safe transport and gas saving overhead valves for a cooler, cleaner performance. The horizontal shaft design makes this an ideal all-purpose gas engine.

  • Upgraded engineering and construction for improved lifespan
  • Durable cast iron cylinder withstands wear and abuse
  • User-friendly controls for easy starting and operation
  • Fuel shut off for safe transport
  • Ball bearing support shaft for long life
  • Recoil start


ENGINE SPECS:

Name 3 HP (78.5cc - 79cc) OHV GasBike Horizontal Shaft Gas Engine 
SKU 69733
Brand GasBike Engines
Engine displacement (cc) 78.5cc - 79cc
Horsepower (hp) 3
Maximum speed (rpm) 3600 RPM
Maximum Torque (ft. - lbs.) 3.5 ft. lbs. @ 2500 RPM
Mounting pattern 102mm L x 104mm W - 61.5mm W (4 in. L x 4.9 in. W - 2.4 in. W )
Mounting type Horizontal
Quantity 1
Shaft rotation direction Counter clockwise
Sound rating (dB) 104 dB
Start type Recoil start
Product Height 8.5 in.
Product Length 12-1/4 in.
Product Weight 24.25 lbs / 11 kg
Product Width 11-1/2 in.
Shaft length (in.) 2.4 in. (60.1mm)
Shipping Weight 26 lbs
Stroke length (in.) 37 mm




TRANSMISSION SPECS:

  1. 79cc Transmission plate with complete sprocket and shaft assembly (Sprocket = 22T and 9T)
  2. 11 tooth, #415 sprocket Centrifugal Clutch
  3. Complete hardware for mounting the transmission plate on the engine (Screw thread size is 5/16-24)
  4. #415 Chain, 41 Link with a master link

 

NOTE: NO MANUAL INCLUDED.


Our gasoline operated products are NOT compliant with Environmental Protection Agency ( E.P.A. ) or California Air Resources Board (C.A.R.B) for the use on/off Public roads. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and NOT for on/off public roads.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 76329024393

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Isabel Sosa
Lowell, US
★★★★★ 5
Easy cleaning and pleasant scent.
Size: 8 Fl Oz (Pack of 2)
It works very well with the robot vacuum cleaner. It cleans the floor without damaging it, leaves no residue or marks, and leaves a soft, pleasant scent. It lasts a long time and doesn't cause any problems for the device. A very good product; I would definitely buy it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 5
So Worth the Purchase !!!
Size: 8 Fl Oz (Pack of 2)
I was a little hesitant to buy this since it’s a bit pricey for a floor-cleaning liquid. Still, I decided to give it a shot because the floor in my new apartment smelled stinky due to the pet urine from the previous tenant. It turned out to be totally worth the investment! The floor gets much cleaner with this product—the dirty water tank ends up way dirtier than usual—and the Eufy mop pads no longer smell bad like they used to without this liquid. Also, just a little goes a long way. I fill the tank to the max with water and add about 15ml of this liquid. The instructions say to dilute 10ml in 2 liters of water, and my tank holds about 2.5 liters. So with one bottle, I can refill the tank around 31 times—which is a lot! Since it needs to be heavily diluted, I don’t notice much of the scent after mopping. I do wish it had a stronger fragrance, but it gets the job done, so I’m very satisfied!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 30, 2025
B
Verified Purchase
blackstarrs3
Birmingham, US
★★★★★ 4
Works good but doesn’t make the house smell nice
Size: 8 Fl Oz (Pack of 2)
This works good in our robot vac/mop however it doesn’t make the house smell good when the house is mopped, just when you put it in the water tank. The floors are clean and that’s all I really care about but would it be nice to smell freshly mopped, yes.
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Reviewed in the United States on January 8, 2026
B
Verified Purchase
Bmcsloth
Pawtucket, US
★★★★★ 5
Amazing and it works great!
Size: 8 Fl Oz (Pack of 2)
I love this products. I wish they have other scent for the different season. Overall, this is worth it. I love my vacuum and this product. My floors are always clean and smells great.
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Reviewed in the United States on January 27, 2026
D
Verified Purchase
Domingo Garcia
Houston, US
★★★★★ 5
Indispensable for mapping the floor.
Size: 8 Fl Oz (Pack of 2)
It is indispensable for mapping the floor.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026

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