TYGA NSR 250 to 300 Big Bore Kit

Product Name: NSR300 Big Bore Kit Motorcycle Model: MC18/21/28 Part Number: TPER-0007

Tyga NSR300cc Big Bore Kit

This is a simple bolt on replacement top end kit which radically improves the power characteristics of your NSR250. It transforms the mid range, allowing for much greater acceleration out of turns. But that's not all, there is power everywhere! The peak power is noticeably improved and consequently top speed and the engine feels stronger all over. This is the biggest boost you can give to the performance of your NSR250. Why simply rebuild your engine when you can upgrade it with one of these kits? Why wait until you need a rebuild? Take the 250cc top end off and save it in a cupboard and bolt this 300cc kit on and enjoy the difference!

(This does not include expansion chambers)

note

Due to the extra power of the 300cc kit, it is essential that your base engine is in good condition. This applies particularly to the crankshaft and clutch assemblies.

Technical details Bore & Stroke is 59mm x 54.5mm giving a total displacement of 298cc.

Parts included in the NSR300 kit.

Cylinder x 2 (includes head studs, RC valve, pulley & nut and washers) Rear Head x 1 Front Head x 1 Piston x 2 Ring set x 2 Piston Pin x 2 Piston Clip x 4 S/E Bearing x 2 Head gasket x 2 Cylinder gasket x 2 RC Valve cables x 4 Water hose x 1 Exhaust Manifold x 2 (to fit TYGA pipes)

Other information:

There is no problem about the RC valves hitting the piston due to thin cylinder wall thickness. This is not an issue on our kit as it's using different cylinders, not modified NSR250. They are genuine OEM Honda cylinders, made and plated in Japan to their typical high quality.

The RC valves are easier to adjust than ever on the 300 kit, as there's only one adjuster screw to play with, and each cylinder marked at the correct 'fully open' position for simple setting.