RUNFAST 2-STROKE YD-100 COMPLETE MOTORIZED BIKE KIT
RUNFAST 2-STROKE YD-100 COMPLETE MOTORIZED BIKE KIT
RUNFAST 2-STROKE YD-100 COMPLETE MOTORIZED BIKE KIT

RUNFAST 2-STROKE YD-100 COMPLETE MOTORIZED BIKE KIT

Regular price $179.99 Sale

A MEGAPOWERED RUNFAST TM 2-STROKE 2-STROKE MOTORIZED BIKE YD-100 KIT for converting your bike INTO A MOTORIZED BIKE!
WHY RUNFAST IS THE HIGHEST QUALITY MOTORIZED BIKE ENGINE KIT IN THE WORLD?
Heavier, stronger magnet rotor for more power! Other cheap bike engines use weaker, less powerful magnet rotors. Feel the difference!

Heavier, thicker cylinder bodies and crank case for strength and durability!
Heavy duty metal engine casing for added strength and durability
Wider front mount for better bike fitting accommodations of all bikes 
Front and rear mounting studs are rugged thick 8mm. Cheap low quality kits use thin, brittle studs that break off.
Enhanced universal motor mount clamp bracket for seamless bike tube front mounting.
High quality advanced u-bolt 8mm universal motor mount plate 8.8 grade 8mm bolts and nuts for ultra hold and grip
High grade 8.8 standard for all bolting hardware. The low quality cheap kits use 4.4 grade that strip threads easily. 

Balanced, heavy duty quality crank assembly with smooth rides. 

Longer camshaft arms for easier disengagement 
Superior, longer clutch handle lever with correct (not inferior locking lever)
No button locking mechanism means that your button doesn’t pop off (common for cheap low quality kits) 
Higher quality throttle grips that beat the low quality cheap brittle plastic connections that break after the first ride
Thicker kill switch cables not the low quality thin and cheap kill switch cables from the cheap low quality kits 
Superior woven throttle cable for super slick easy to twist throttle action. Cheaper, lower quality engine kits have cables that bind up in the cable housing promoting excess wear/damage on throttle grip.
Higher quality, thicker bevel gear grease for superior lubrications

Superior chain tensioner pulley wheel with locking bolt. No need to jam a screwdriver in the back to tighten wheel. Superior pulley wheel with locking snap clip to prevent pulley from falling off of bearing! Cheap low quality kits don’t include this and have their pulleys fall off every time with disastrous consequences

High quality speed carburetors with correct tension throttle springs. Cheap low quality kits use stiff inappropriately tensioned springs causing excess throttle resistance and throttle grip damage. 
Super wide 40mm intake for optimal air/gas flow. Cheap low quality kits use narrow 32mm intakes for inferior flow and weak running. 
Superior hardened steel bucking bar for ultimate durability every time you need to disengage the clutch. Cheap low quality kits use cheap, low quality metal bucking bars that quickly wear down preventing proper clutch disengagement 
Wider, more accommodating gas tank straps for easier mounting unlike the cheap low quality thin and stiff gas tank straps from low quality, cheap kits. 
Higher quality fuel valve with superior stiff thick rubber gasket to allow for proper position of the gas valve unlike the cheap low quality motorized bike kits that provide thin red washer that prevents proper tank valve position crucial in opening and closing of the gas valve. 
High quality fuel filter unlike the low quality cheap filters that the low quality cheap motorized bike kits provide 
Longer, stronger high quality fuel line unlike the cheap low quality short gas line from cheap low quality motorized bike kits 
We at Runfast build and ride motorized bikes and demand the highest quality components direct from the manufacturer. Every detail counts. The cheap low quality bike engine kits don’t care and don’t understand the details that make a quality motorized bike engine kit. See the difference. Feel the difference. Ride the difference. 
• Super fuel-efficient, only consuming 2.5 litre fuel per 100km
• Fast and powerful!
• Comes with all needed hardware for easy installation
• Fit for most type 26" and 28" and 29” bikes, such as mountain bikes, road bikes and cruisers.
Specification:
• Mode of Engine:Single cylinder, air-cooling, 2-stroke
• Bore & Stroke:50mm & 40mm
• HYPERFIRE DUAL SUPER HOT Ignition Mode:CDI
• Model of Chain: 415 
• Chain Length: 110 links
• Driving Ratio:18:01
• Fuel Type:No.90
• Capacity of Tank:2L
• Lubrication Oil: oil of 2-stroke petrol engine (2-Cycle )
• Mixing Ratio of Fuel and engine Oil:5 oz oil per 1 gallon gas for new sets, 4 oz oil per 1 gallon after running 500km
• Type of Sparking Plug:Z4C 14MM
• Volume of oil Consumption:2.5L/100km
• Type of Clutch:Friction Plate / Dry
• Cooling Mode:Natural air cooling
Package included:
• 1x yd-100 2-stroke engine(the putt is bent)
• 1x MIGHTYMAXX MULTITOOTH Sprocket clamp assembly with hardware
• 1x Push button clutch
• 1x Heavy duty chain
• 1x Bearing chain tensioner / idler
• 1x SPEED FIRE Carburetor
• 1x HYPERFIRE SUPER HOT CDI ignition coil
• 1x Kill switch (on throttle)
• 1x Chain guard
• 1x SUPERZAP Spark plug
• 1x Black gas tank with mounting brackets
• 1x Exhaust pipe clamp
• 1x Muffler exhaust chrome
• 1x Plug removal tool 
• 1x Manual
• All the needed mounting brackets, gaskets, and hardware

 

  • Gasoline motor: YD100 (Real Displacement is 79cc/80CC)
  • Engine Type: Single cylinder, air-cooled,2-stroke
  • Mixing Ratio of Fuel(90#) and Engine Oil: 16: 1 for New sets, 20: 1 after Running 500Km
  • Power: 2.0KW
  • Bore and Stroke: 50mm x 40mm
  • Cylinder inner diameter: 50mm
  • Piston outside diameter: 50mm
  • Maximum speed:45-50km/h
  • 8mm front and rear mount studs
  • NEW Red CDI IGNITION
  • Cylinder Head and Cylinder Two In One, better design for cooling, higher power with hill driving easily.
  • 36T Sprocket
  • YD100-100CC Differences with Standard 80cc engine kits:
  • Two in one cylinder
  • Crank
  • Piston kits
  • CDI
  • Carburetor


Note:
• The kit includes all the parts and instructions necessary to convert your bike.
• Please also keep in mind that the motor will use a mix of gasoline and 2-cycle oil. The oil is used as a lubricant. Without it, the performance and longevity of the motor will be reduced. Please refer to the manual for further information including gasoline/oil ratios.
• If you have any questions,please contact us for technical solutions.
Upon purchase buyer agrees to the terms and conditions as stated in this description and in documents enclosed in the package. Buyer rides at own risk and acknowledges the dangers of riding motorized bicycles.


WARNINGS AND PRECAUTIONS:
RIDING A MOTORIZED BICYCLE CAN BE DANGEROUS AND HAS THE POTENTIAL TO CAUSE SERIOUS INJURY AND EVEN DEATH. AN OPERATOR OF ANY GORILLA GASBIKE MOTORIZED BICYCLES, PRODUCTS, AND SERVICES INSTALLS/ASSEMBLES/RIDES AT HIS/HER OWN RISK. AS THE PURCHASER YOU UNDERSTAND AND ACCEPT ALL AND ANY SEEABLE AND UNFORESEEABLE RISKS BASED ON MAINTENANCE, STRUCTURAL INTEGRITY, OPERATION, WEATHER, ROAD CONDITIONS, TRAFFIC, ETC. IT IS STRONGLY ENCOURAGED THAT A TRAINED MECHANIC INSPECT ALL ASPECTS OF THE MOTORIZED BICYCLE BEFORE RIDING TO CONFIRM SUITABILITY. CUSTOMERS WHO ARE NOT MECHANICALLY INCLINED OR UNFAMILIAR WITH MOTORIZED BICYCLES ARE STRONGLY ADVISED TO SEEK HELP BEFORE ATTEMPTING TO MAINTAIN, FIX, OR INSTALL ANY ASPECT OF A MOTORIZED BICYCLE.
NOTE: IT IS THE RESPONSIBILITY OF THE BUYER TO PROPERLY REINFORCE AND ATTACH ANY ADDED FENDERS BEFORE RIDING. THIS INCLUDES THE ADDITION OF HEAVY-DUTY STRAPS, SUPPORT SCREWS, THREAD LOCK, AND PRESSURE-DISTRIBUTING WASHERS. FENDERS THAT ARE NOT PROPERLY REINFORCED CAN BREAK AT THE CONNECTIONS AND FALL INTO THE WHEELS. THIS CAN LEAD TO SERIOUS ACCIDENTS, INJURIES AND EVEN DEATH.
IT IS STRONGLY ADVISED THAT CUSTOMERS WHO WANT TO FULLY REMOVE THIS RISK OF POTENTIAL DANGER RIDE THE MOTORIZED BICYCLE WITHOUT THE USE OF FENDERS.
WHEN OPERATING A MOTORIZED BICYCLE ALWAYS:
Use front and rear lights when riding at night.
Wear a properly-mounted and fastened bicycle or motorcycle helmet.
Wear bright and conspicuously-colored clothing.
Wear gloves, pants, and closed-toed shoes.
Travel at the lowest speed possible (NO MORE THAN 10-15 MPH) to avoid serious accidents, injuries and death.
Obey all environmental state and city traffic laws, ordinances and, speed limits on and off the road.
Practice riding the motorized bicycle in an open area free from traffic to become familiar with motorized riding.
Plan out and use a safe route to ride where traffic is at a minimum.
Be aware of the traffic while riding on the road and use caution especially when merging, making left turns, and moving through intersections.
Inspect the motorized bicycle before riding and make any necessary adjustments and/ or repairs.
Maintain the motorized bicycle on a regular basis to ensure its integrity and proper functionality.
Use caution when dealing with gasoline. It is volatile, flammable and combustible. Do not smoke when operating a motorized bicycle.
Upon purchase buyer agrees to the terms and conditions as stated in this description and in documents enclosed in the package. Buyer rides at own risk and acknowledges the dangers of riding motorized bicycles.