S-Stage Alpha Big Bore Kit 145cc

Bore Diameter: 54mm
Stroke: 63.1mm (stock)
Compression ratio: 11.2: 1

Bore Diameter: 54mm
Stroke: 63.1mm (stock)
Compression ratio: 11.2: 1

*When S-stage Big Bore Kit is installed, FI-CON TYPE-e (Injection Controller) must be installed at the same time.
For competition use only.
*Related to the installation of a big bore kit
The crankshaft is subjected to increased torsion and deflection due to the significant increase in engine power and torque caused by the SP Takegawa big bore kit.
SP TAKEGAWA recommends to install crankshaft support adapter at the same time to reduce the load on the crankshaft.
The Crankshaft Support Adaptor adds ball bearing support to the end of the flywheel side of the crankshaft to reduce twisting and deflection and to increase the durability of the crankshaft.
Crankshaft Support Adapter for GROM (JC92) (Part No: 01-10-0149)
*When installing the S-stage Big Bore Kit, Sports Camshaft, or FI-CON TIPE-e, be sure to use the "High Capacity Injectors (G1) (Part No.: 00-00-00-0487) " must be installed at the same time.
*There may be changes in product specifications due to the manufacturer's reasons.

*When using FI-CON TYPE-e, a computer or smartphone that meets the requirements is required.If you do not meet the requirements, you will not be able to use this product.You will also need to be connected to the Internet to download software and applications.
In the case of an application, a fee is charged.

*FI-CON TYPE-e usage environment (for PC)
●Windows (excluding RT)
To install SP Takegawa software (free), you need to be connected to the Internet.

●About Windows 7 / 8 / 10 / 11
Communicates with Windows standard drivers (stack) for Windows 10 / 11.It can be used with built-in adapter.
The same method can be used for Windows 10 April 2018 Update (1803) or later.
Be sure to use the standard Windows driver (stack).Connections to other stacks are not supported.
The PC must have built-in Bluetooth or an external Bluetooth adapter is required.

■FI-CON TYPE-e Usage Environment (for smartphones)
●iOS: iPhone4s or later iPad 3rd generation or later iOS9 or later
To install SP Takegawa dedicated application (paid), you need to connect to AppStore.
After installing the free FI-CON TYPE-e application, you need to purchase the paid model data in the application.
Please check the app's unit price as it is subject to change.

●Andoroid Andoroid devices: Built-in Bluetooth version 4.2.2 or later
You need to connect to Google play to install the SP Takegawa application (paid application).
After installing the free FI-CON TYPE-e application, you need to purchase the paid model data in the application.
Please check the app's unit price as it is subject to change.
*Depending on the lot, the product may be delivered with the old price and label with the old JAN code before the price change.