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Aluminum steel sleeve cylinder
[Bore Diameter]
63.1mm (stock)
[compression ratio]
[Installation time]

*When S-stage big bore kit is installed (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.
*There may be changes in product specifications due to the manufacturer's reasons.

You can enjoy the full torque of the output performance that is not stock.
■S Stage Big Bore Kit 145cc
By changing the cylinder and piston, the displacement can be changed from the stock 124cc to 145cc.
When installed together with (Injection Controller), it delivers a torquey output characteristic different from stock.
Since the cylinder can be equipped with SP M5 temperature sensor, the cylinder temperature can be measured by separately purchasing a thermometer (compact LED thermometer with M5 temperature sensor).
■Sports Camshafts (N-10)
This is the best profile to maximize the performance of the stock cylinder head and improve the output performance.
By installing it on the stock engine, the power output in the high RPM range will be improved.
If you remove the decompression parts from the stock camshafts and install them on the sports camshafts, you will have auto decompression.

Takegawa S-Stage Bore Up Kit 145cc 125 Monkey 2021-2023+ JB03 / 125 Dax JB04

Out of Stock
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