*FI CON2 (item no.05-04-0014) must be installed at the same time.Old type FI CON2 (item no.05-04-0005), you will need to rewrite the program to the new one at SP Takegawa. This is a closed course only. *FI CON2 is available for CBR250R and CRF250L.
*For those who have installed the old type FI CON2 for CBR250R Old type FI CON2(Injection controller)(Part No.05-04-0005) does not have a built-in 3D correction map set up for the 305cc bore up kit. Therefore, when installing the big bore kit, it is necessary to send the FI CON2 to SP Takegawa for rewriting to the new program.
■Details This is a big bore kit to increase the displacement to 305cc by changing the cylinder and piston. When installed together with FI CON2 (Injection Controller), it delivers a torquey output characteristic different from the stock one.
The cylinder is an all aluminum ceramic cylinder with excellent durability, airtightness and heat dissipation.The cylinder shape has been changed from the open deck method of the stock cylinder to the closed deck method to increase the rigidity of the cylinder.Also, by increasing the capacity of the cylinder water jacket, the engine is protected from overheating. The cylinder oil line is equipped with an oil jet mechanism that jets oil directly into the cylinder to improve the cooling and lubrication of the piston. There is a service hole in the cylinder body where the temperature sensor of the water and oil temperature gauges can be installed.Target temperature sensor: SP Takegawa PT1/8
Forged Piston: By using special forged materials used in racing engines, we have achieved weight reduction while maintaining strength. Bore diameter 84mm, Compression ratio 13.0:1
By installing SP Takegawa Sports Camshaft and Silent Oval Exhaust at the same time, the power output can be increased further.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
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