■ S-Stage Bore Up Kit 181cc
By changing the piston and cylinder, the displacement can be changed from 124cc to 181cc.
By installing the FI CON TYPE-e(injection controller) simultaneously, can be obtained an output characteristic that is different from the stock engine.
all-aluminum ceramic plated cylinder has excellent durability, tightness, heat dissipation.
Since the cylinder is equipped with an oil outlet to the oil cooler, it is possible to suppress the rise in oil temperature by purchasing an oil cooler kit separately.
The surface of the cylinder is unpainted silver.
An M5 sensor can be attached to the oil plug bolt, and the cylinder temperature can be measured using our compact LCD thermometer M5 sensor set.
Bore diameter: 63mm, compression ratio 11.0:1, Stroke 57.9mm (Stock)