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

【SP Takegawa 01-05-0633 Hyper S-Stage Bore Up Kit 181cc Super Cub C125 Engine Parts Takegawa】
■Product Description
The Hyper S-Stage Bore Up Kit includes the S-Stage Bore Up Kit, Sports Camshaft (N-20), Big Throttle Body Kit, FI-CON TYPE-e (Injection Controller), Fuel Injector (G-1), 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 replacing the cylinder and piston.
When installed with the FI-CON TYPE-e (injection controller), it achieves a torqueful output characteristic 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 the oil cooler.
An M5 temperature sensor can be attached to the oil plug bolt. By using SP Takegawa's Compact LED Thermometer with M5 Temperature Sensor Set, the cylinder temperature can be measured.
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)
Optimal profiles that maximize the performance of the stock cylinder head improve output performance.
When installed on a stock engine, output in the high RPM range is improved.
Regarding 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)
When installing a sports camshaft or muffler parts, the air-fuel ratio can deviate significantly from ideal, so the FI-CON is necessary to correct the fuel injection time.
Installation is possible simply by disconnecting and connecting the stock ECU coupler.
The FI-CON TYPE-e comes with multiple pre-set data tailored by SP Takegawa for SP Takegawa engine parts, so you can easily select, change, and modify setting data using a computer or smartphone according to your engine specifications.
Injection time adjustment ranges from a maximum increase of 5000μs to a maximum decrease of 7500μs, making it widely applicable from stock displacement to bore-up vehicles.
It is also very convenient for setting, as it features monitoring functions for engine RPM, engine temperature, throttle opening, and injector opening/closing rate using a computer or smartphone.
●Big Throttle Body Kit φ28
This product is an SP Takegawa original big throttle body compatible with stock air cleaner boxes/connecting tubes.
While the stock throttle body is φ24mm, the SP Takegawa big throttle body is φ28mm.
No modification to the cowl or wiring is required; simply replace the stock throttle body with this big throttle body to maximize the performance of the stock cylinder head and increase output.

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

■Notes
※Image is for illustration purposes only. It includes products with different sizes and colors.
※Product design and specifications are subject to change without notice. Please be aware.
※The installation of SP Takegawa's S-Stage bore up kit significantly increases engine output and torque, which places increased stress on the crankshaft, such as twisting and deflection. SP Takegawa recommends simultaneously installing a crankshaft support adapter to reduce the load on the crankshaft.
The crankshaft support adapter adds support to the flywheel side end of the crankshaft with a ball bearing, thereby suppressing twisting and deflection and enhancing crankshaft durability.
※This product is made to order, so cancellations after ordering are not possible.
※As this product is made to order, it may take some time for delivery. Also, the manufacturer may discontinue the product or change specifications without notice. Please be aware in advance.