S-Stage Bore-Up Kit 145cc with N-10 Cam for Monkey 125

【SP Takegawa 01-05-5459 S-Stage Bore Up Kit 145cc with N-10 Cam for Monkey 125 Engine Parts Takegawa】
■Product Description
Enjoy powerful output performance not found in the stock model.

■Detailed Description
●S-Stage Bore Up Kit 145cc
By changing the cylinder and piston, the displacement can be changed from the stock 124cc to 145cc.
When installed simultaneously with FI-CON TYPE-X (injection controller), it achieves powerful output characteristics different from stock.
The cylinder uses an aluminum iron sleeve cylinder.
Bore diameter 54mm. Stroke 63.1mm (stock). Compression ratio 11.2:1.
Since the cylinder can be fitted with an SP Takegawa M5 temperature sensor, you can measure the cylinder temperature by purchasing a separate thermometer (Compact LED Thermometer with M5 temperature sensor).
S-Stage Bore Up Kits are available in two types: with and without a sports camshaft.
●Sports Camshaft (N-10)
Output performance is improved by an optimized profile that maximizes the performance of the stock cylinder head.
When installed on a stock engine, output at high RPMs is improved.
By removing the decompression parts from the stock camshaft and assembling them into the sports camshaft, it becomes an auto decompression specification.

■Compatible Models
HONDA
Monkey 125 (JB03/JB05-1000001～)

■Notes
*Image is for illustration purposes only. Includes products of different sizes and colors.
*Product design and specifications may change without prior notice. Please understand.
*When installing the S-Stage Bore Up Kit, simultaneous installation of FI-CON TYPE-X (injection controller) is required.
*Since the displacement will be 125cc or more, it cannot be ridden on public roads with a moped license (Class 2). It is for competition only.
*The installation of SP Takegawa's bore-up kit significantly increases engine output and torque, which increases the load on the crankshaft, such as twisting and deflection. To reduce the load on the crankshaft, SP Takegawa recommends simultaneously installing a crankshaft support adapter. The crankshaft support adapter adds support with a ball bearing at the end of the flywheel side of the crankshaft, thereby suppressing twisting and deflection and increasing the durability of the crankshaft.