Reviews Stroke Big Bore Kit

DONSP1986 PK80 Motor Replaement of Top End Cylinder Set and Bottom End Crank Set for 2 Stroke kit 66cc/80cc

PK80 Replaement of Top End Cylinder Set and Bottom End Crank Set for 2 stroke kit 66cc/80cc.
better adjusting Clutch a little before riding.
PK80 Replaement of Top End Cylinder Set and Bottom End Crank Set with AF80 connecting rod.
High hole Piston and Long connecting rod.
Clear up the cylinder transfer ports before assembling maybe some rough slag inside which maybe break off and cause the jamming of pistons and cylinders.
fully attention on screwing cylinder to the end bottom,DO NOT screw M8 bolts tightly that maybe cause drill through the end bottom so add some gasket or washer on head is better way to prevent it happen.
Attention on piston ring if put the piston out of cylinder, the piston rings are weak, better with right way install piston kit to cylinder.

This 2-stroke 50cc engine kit is perfect to upgrade the regular bike to a motorized bike, you can enjoying riding at a faster speed, which can reach 30km/h as fast as a motorcycle or scooter..
Fits for most 24" 26" or 28' wheeled bikes with V-frame. The frame should have 9-11" of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around an 1").
Key parameters: bore and stroke-47mm & 40mm, Max. power 3 horsepower/5000r/min, Super fuel-efficient, only consuming 2.5L fuel/100km.
Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30).
Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km.
Mode of Engine: Single cylinder, air-cooling, 2-stroke Natural air cooling.
The rider needs some basic hardware tools, skills and around 2-3 hours to install. Add some lubricant into the air cylinder before starting. NOTE: Due to the chemical reaction of electrophoresis, the engine motor of the product will have a certain proportion of color difference. Please mind to buy it carefully.

Replaces OEM Part Numbers: Yamaha 1UY-11310-03-00, 4KB-11351-00-00,93450-19095-00, 4GB-11610-00-00,1YW-11631-01-Y0, 55V-11633-00-00,1UY-11181-01-00, 5YT-11310-00-00,4WU-11310-00-00.
Compatible with the 1987-1999 Yamaha Big Bear 350, 1987-1988 Yamaha Big Wheel 350, 1987-1990, 1992-1995 Yamaha Moto-4 YFM350ER, 1987-2004 Yamaha Warrior 350, 1995-2009 Yamaha Wolverine 350, 2004-2006.
Includes Cylinder, Piston, Piston Rings, Wristpin, Circlips and Head Gasket.
Also Includes Base Gasket and NGK Spark Plug.
Cylinder Bore and Stroke 83.00mm x 64.50mm.

CDHPOWER LD90 Motor w/o CDI and Excluding 2pcs anti vibration black rubber for the motor mount,upgraded pk80 motor.
better adjusting Clutch a little before riding..
Includinhg spark plug and piston kit；Excluding two head plug CDI Box ( Asin for two head plug CDI: B098Q988VJ ).
High hole Piston and Long connecting rod.
Clear up the cylinder transfer ports before assembling maybe some rough slag inside which maybe break off and cause the jamming of pistons and cylinders.
fully attention on screwing cylinder to the end bottom,DO NOT screw M8 bolts tightly that maybe cause drill through the end bottom so add some gasket or washer on head is better way to prevent it happen.
Attention on piston ring if put the piston out of cylinder, the piston rings are weak, better with right way install piston kit to cylinder.
FYI: the LD90 motor is compatible with all brand 2 stroke 66cc/80cc gas motor kit.

For MTD 741-0656 941-0656A 717-1554 for TORO 112-0863, Used on Riders since 1999. 11 Tooth. Splined Bore.
Steering Shaft Pinion Gear Replace for MTD 717-1554, Fits for Rotary 13229 bushing, Used on Riders since 1999. 11 tooth. Splined bore..
Hex Steering Bushing Specs, ID: 5/8" Ht: 1/4".
Fits for Cub Cadet 1170, 1180, 1212, 1515, 1517, 1525, 1527, 1529, 1600, 1800 Fits: Cub Cadet LT1018, LT1022, LT1024, LT1040, LT1042, LT1045, LT1046, LT1050, SLT1550, SLT1554, GT1222, GT1554 Fits: forTroy-Bilt Bronco, LTX1842, LTX2146, GTX2446, GTX2654, Horse, Big Red GT50 & GT54 Fits: Columbia CR30, White LT-5000, MTD Gold, Lawn Chief 46" Deck, Yard-Man, Yard Machines, Huskee Kit Contains: 717-1554 & 941-0656a,PARTS SKU:11KIT_WK1000041 Steering Shaft Pinion Gear.

【Brightness Enhancement】Laser class: IIIA , Max Output Power: .
【Improve Accuracy】It can emit a stronger red larse beam from the center , providing a precise refefor zeroing in on your target, allows for quick....
【8 Adapters for More Model】Come with 8 bore adapters in set，Eeayrk bore sighter can perfectly fit for 0.17 to 0.54 caliber, rifles, pistols,....
【Upgrade Big button switch】 Our bore sight kit upgrade big and sensitive button switch, just lightly press to turn ON/OFF the laser, control it....
【Longer battery life】 Comes with 2 upgraded CR2 batteries, which can last longer use time.Long sighting range,light weight and durable..

Lifan 150cc engine, 1-N-2-3-4 gear, manual clutch, 4 stroke 4 speed, single cylinder.
Max. Power & Corresponding Speed: 9kw(7500±375) / Max. Torque & Corresponding Speed: 11N.M(5000±250).
Bore x Stroke: 56.5mm x 59mm / Sprocket: 15T 428 Chain / Shaft size: 17mm.
Replacement / upgrade for XR50 CRF50, Kawasaki KX KLX and other most popular dirt bikes.
Package include: (1)Lifan 150cc Engine (1)Kick Starter Lever (1)Gear Shift Lever (1)Intake Manifold (1)Manifold hardware kit (1)Carburetor (1)Air Filter (1)CDI (1)Ignition coil (1)Wire harness (1)Clutch Cable (1)Exhaust Muffler (1)Pipe.

2-stroke 80cc engine kit is perfect to upgrade the regular bike to a motorized bike,you can enjoying riding at a faster speed, which can reach 38km/h as fast as a motorcycle or scooter.
Fits for most 24" 26" or 28' wheeled bikes with V-frame. The frame should have 9-11" of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around an 1").
Key parameters: bore and stroke-47mm & 40mm, Max. power 3 horsepower/5000r/min, Super fuel-efficient, only consuming 2.5L fuel/100km.
Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30).
Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km.
Mode of Engine: Single cylinder, air-cooling, 2-stroke Natural air cooling.
The rider needs some basic hardware tools, skills and around 2-3 hours to install. Add some lubricant into the air cylinder before starting. NOTE: Due to the chemical reaction of electrophoresis, the engine motor of the product will have a certain proportion of color difference. Please mind to buy it carefully.