S-Stage N-20 Big Bore Kit 181cc Monkey 125 Super Cub C125 GROM MSX125 CT125

【SP武川 01-05-0387 S-Stage N-20 Bore Up Kit 181cc for Monkey 125, Super Cub C125, GROM, MSX125, CT125 Engine Parts Takegawa】
■Product Description
Enjoy powerful output performance not found in the stock engine.

■Detailed Description
●S-Stage Bore Up Kit 181cc
This bore up kit allows you to change the displacement from the stock 124cc to 181cc by changing the cylinder and piston.
When installed simultaneously with an injection controller, it achieves powerful output characteristics different from stock.
The cylinder uses an all-aluminum ceramic-plated cylinder with excellent durability, airtightness, and heat dissipation.
Bore diameter 63mm. Stroke 57.9mm (stock).
The piston is standard for high-octane gasoline specifications.
Compression ratio standard piston: 11.0:1.
●Sports Camshaft (N-20)
Output performance is improved by an optimal profile that maximizes the performance of the stock cylinder head.
When installed on a stock engine, output in the high-rev range is improved.
Regarding the Sports Camshaft (N-20), if you remove the decompression parts from the stock camshaft and install them on the Sports Camshaft, it will become an auto-decompression specification.

■Compatible Models
HONDA
Monkey 125 (JB02-1000001～)
Monkey 125 (Thai model/MLHJB02)
Super Cub C125 (JA48-1000001～)
GROM (JC61-1000001～1299999)
GROM (JC61-1300001～)
GROM (JC75-1000001～)
MSX125 (MLHJC6181D5000001～)
MSX125SF
CT125 (JA55-1000001～)

■Notes
*The 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 understand.
*When installing the S-Stage bore up kit, simultaneous installation of an injection controller is required. The injection controller differs depending on the vehicle and frame number. If purchasing simultaneously, please purchase the Hyper S-Stage specific to your vehicle.
*Since the displacement will be 125cc or more, it is not possible to ride on public roads with a moped registration. This is for competition use only.
*With the installation of SP Takegawa's high-compression piston kit, engine output and torque are significantly increased, leading to increased stress such as twisting and deflection on the crankshaft. To reduce the burden 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 crankshaft flywheel side, suppressing twisting and deflection, and improving the durability of the crankshaft.
*This product is made-to-order, so cancellations after ordering are not possible.
*As this is a made-to-order product, it may take some time for delivery. Please also note that the manufacturer may discontinue the product or change its specifications without prior notice. Thank you for your understanding.