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:
- 78.5cc - 79cc 3HP OHV GasBike Horizontal Shaft Gas Engine
- Transmission for 78.5cc - 79cc OHV GasBike Horizontal Shaft Engines
- Heavy Duty Bicycle Mounting Kit for 78.5cc - 79cc or 212cc OHV Predator Horizontal Shaft Engines
- Throttle Handle
- Throttle Cable - 50"
- 44 Tooth Sprocket
- Pineapple Bushing Kit
- 415 Heavy Duty Chain
- Idler Pullet Chain Tensioner with 2 Bolts
- 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:
- 79cc Transmission plate with complete sprocket and shaft assembly (Sprocket = 22T and 9T)
- 11 tooth, #415 sprocket Centrifugal Clutch
- Complete hardware for mounting the transmission plate on the engine (Screw thread size is 5/16-24)
- #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.
