Compatible models: GROM (JC92-1000001 to 1099999) Displacement can be changed from standard 124cc to 145cc by changing the cylinder and piston. FI controller TYPE-e (injection controller) large capacity injector is included with the S stage bore up kit.

This is a bore up kit that allows you to change the displacement from stock 124cc to 145cc by changing the cylinder and piston. By installing it at the same time as FI CON TYPE-e (injection controller), you can achieve torqueful output characteristics that are different from normal ones. The cylinder uses an aluminum iron sleeve cylinder. Bore diameter 54mm Stroke 63.1mm (normal) Compression ratio 11.2:1 The cylinder can be equipped with an SP Takekawa M5 temperature sensor, so by purchasing a separate thermometer (compact LED thermometer M5 temperature sensor included). , cylinder temperature can be measured. *Since the engine displacement is over 125cc, it cannot be driven on public roads if it is registered as a type 2 moped. It will be for competition only. When using FI CON TYPE-e, you will need a computer or smartphone that meets the conditions. If you do not meet the conditions, you cannot use it. Also, you will need to be connected to the internet as you will need to download software and apps. For apps, there is a charge. Thank you for your understanding.


Manufacturer: ‎Special Parts Takegawa
Brand: ‎Special Parts Takegawa (TAKEGAWA)
Model Name: ‎S Stage α Bore Up Kit
Package Size: ‎38.7 x 19.8 x 15.1 cm; 2.6 kg
Item model number: ‎01-05-5461
Certification: ‎None
Item weight: ‎2.6 Kilograms