S-Stage α Bore Up Kit 181cc Super Cub C125

【SP Takegawa 01-05-0617 S-Stage Alpha Bore Up Kit 181cc Super Cub C125 Engine Parts Takegawa】
■Product Description
The S-Stage α Bore Up Kit includes the S-Stage N-20 Bore Up Kit, FI-CON TYPE-e (injection controller), large capacity injector, and spark plug.

■Detailed Description
●S-Stage Bore Up Kit 181cc
This bore up kit changes the displacement from the stock 124cc to 181cc by modifying the cylinder and piston.
When installed with the FI-CON TYPE-e (injection controller), it achieves torque-rich output characteristics different from stock.
The cylinder uses an all-aluminum ceramic-plated cylinder with excellent durability, airtightness, and heat dissipation.
The cylinder is equipped with an oil outlet boss for an oil cooler.
An M5 temperature sensor can be installed at the oil plug bolt.
Cylinder temperature can be measured by using SP Takegawa's compact LED thermometer set with an M5 temperature sensor.
Bore diameter 63mm. Stroke 57.9mm (stock).
The piston is standard for high-octane gasoline specifications.
Compression ratio with standard piston 11.0:1.
●Sports Camshaft (N-20)
The optimal profile maximizes the performance of the stock cylinder head, improving output performance.
When installed in a stock engine, it improves output in the high-rpm range.
For the sports camshaft (N-20), by removing the decomp parts from the stock camshaft and installing them on the sports camshaft, it becomes an auto-decompression specification.
●FI-CON TYPE-e (Injection Controller)
Installing a sports camshaft or exhaust parts can significantly deviate from the ideal air-fuel ratio, so it is necessary to correct the fuel injection time with the FI-CON.
Installation is possible by simply detaching the coupler of the genuine ECU and connecting it.
The FI-CON TYPE-e has multiple data settings pre-configured by SP Takegawa to match SP Takegawa engine parts, so you can easily select, change, and modify setting data using a PC or smartphone according to your engine specifications.
Injection time adjustment allows for a maximum increase of 5000μs and a maximum decrease of 7500μs, making it suitable for a wide range of vehicles from stock displacement to bore-up vehicles.
It features monitoring functions for engine speed, engine temperature, throttle opening, and injector opening/closing rate using a PC or smartphone, which is very convenient for setting adjustments.

■Compatible Models
HONDA
Super Cub C125 (JA48-1000001～)

■Notes
*Images are for illustration purposes only. They may include products of different sizes or colors.
*Product design and specifications may change without notice. Please understand.
*Installing SP Takegawa's S-Stage bore-up kit significantly increases engine output and torque, which increases the stress on the crankshaft, such as twisting and deflection. SP Takegawa recommends installing a crankshaft support adapter simultaneously to reduce the load on the crankshaft.
The crankshaft support adapter enhances crankshaft durability by adding ball bearing support to the flywheel end of the crankshaft, suppressing twisting and deflection.
*This product is made to order, so cancellations are not possible after ordering.
*This is a made-to-order product, so delivery may take some time. Also, please note that the manufacturer may discontinue the product or change its specifications without prior notice.