2020 Year BT-100/ 2 Stroke 100CC Bike Engine Kit is the best and latest 100cc engine you can find in the circle of bicycle engines. And it is bigger and much more powerful than F80 engines due to the enlarged barrel and enhanced quality of the main parts such as crankshafts, clutch shafts, big clutch springs and so on. It is not like YD-100 engine which keeps all the same but only put on a bigger barrel and piston . This BT-100 engines entered into the market in 2019, but some changes are made on the 100cc cylinders , front&rear engine fixing studs, crankshafts in order to improve its quality and performance.
This single cylinder air cooled 2020 Year BT-100/ 2 Stroke 100CC Bike Engine is the latest model . This cylinder came out in 2019, but it is updated in 2020. Just like most of the 48cc/80cc cylinders, the BT-100 cylinder was made by casting techique , but the current one is made by die casing techique. The other difference is that 2019 Year BT-100 cylinder use M6 short fixing screws, but 2020 Year BT-100 cylinder use long M8 fixing studs extending to the top of the cylinders . More aluminium material and advanced fabricating techniques help improve the quality of the new barrels. Except the barrels, all the parts like pistons, rings, clutchs and CDI have the good quality .
How to differentiate BT-100 engine and BT-80 engine when you simply look at the engines and the required parts to install the engine on the bike
| Model | BT-100 | BT-80 |
| Cylinder Size | 50mm | 47mm |
| Bore*Stroke | 50*40 | 47*40 |
| Real CC | 80CC | 69CC |
| Intake Ports | 35mm | 35mm |
| Exhaust Gasket | Copper Material Special design Used for BT-ES-80 engine | high quality Compatible with F50 engine and F80 engine |
| Muffler | Special design Used for BT-ES-80 engine | with heat shield high quality Compatible with F50 engine and F80 engine |
Except the visible differences, more difference exist and you can find them till you disassemble the engines and study the engines deeply .
Except the intake tubes and intake gaskets, all BT-80 parts are compatible with F80 engine.
Gas Tank Switch
Muffler and Gasket 
Product Specification
Brand: B.T.
Engine Type: 2 stroke Single Cylinder Air-Cooled
Bore & Stroke: 50mm x 40mm
Piston Rings: 3 pieces
Real CC: 80CC
Commonly Called: 100CC
Intake Ports: 35MM
Max Power: 3KW, 5000R/MIN
Compression Ratio: 7:1
Ignition: CDI
Start: Kick Start
Tank Size: 2 Litres
Fuel Consumption: 2.5-3.5L/100Km
Speed: up to 50KM/Hr. Depending On bike size, weight & road Conditions
Type Of Clutch: Rub Bloc Drying
Fuel: Unleaded 91 PETROL Mixed with 2 stroke oil
Start : Kick Start
Tank Capacity: 2L
Lubrication Oil: Two Stroke Oil
Max Speed: 45km/h - 55 km/h
Mixing Ratio of Fuel and Engine oil: 20:1 for new set, 25:1 after 500km
Package included as below
| SN | Description | Qty |
| 1 | 2 Stroke BT-100/100cc Engine | 1 |
| 2 | NT careburetor | 1 |
| 3 | Fuel Line | 1 |
| 4 | Fuel Filter | 1 |
| 5 | New Gas Tank Switch-Femal Type -New Function- On-Off-Reserve | 1 |
| 6 | 2L Gas Tank | 1 |
| 7 | Twist Throttle And Grip | 1 |
| 8 | Throttle Cable | 1 |
| 9 | Clutch Lever | 1 |
| 10 | Clutch Cable | 1 |
| 11 | Large Spring (Heat Shield Spring) | 1 |
| 12 | Extension Spring (Recoil Spring) | 1 |
| 13 | CDI Electron Ignition Coil- High Quality | 1 |
| 14 | Spark Plug and its tool | 1 |
| 15 | Chrome Muffler With Heat Shield | 1 |
| 16 | Outlet Gasket-High Quality | 1 |
| 17 | Big Clamp For Muffler | 1 |
| 18 | Small Clamp For Muffler | 1 |
| 19 | Heavy Duty 415 Chain- High Quality | 1 |
| 20 | Chain Idler With Bearing | 1 |
| 21 | Zinc 44T Sprocket | 1 |
| 22 | Sprocket Clamp Kit | 1 |
| 23 | Engine Mount | 1 |
| 24 | Heavty Duty Front Engine Clamp -Only Compatible With BT-100/100CC Engine | 1 |
| 25 | Rear Engine Clamp -Only Compatible With BT-100/100CC Engine | 1 |
| 26 | Big Engine Clamp Used For Big Frame Tube | 1 |
| 27 | Bolts, Washers and Nuts | 1 |
Target Customers:
The customers who really concern the quality , but not the prices.
The customers who like big power.
Notes:
1. U Bracket is not included.
2. Intake Ports: 35MM
3. Specail Outlet Ports / Outlet Gasket/ Muffler
4. Package Size: 41*37*18CM
5. G.W. Per Package: 12.7KGS
