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250cc PERFORMANCE PACKAGE
70.5mm BORE, Stock STROKE, 10.8:1 COMPRESSION
The piston kit will bore into the stock liner and
increases displacement by about 20cc’s (229cc's stock, 243.8cc with this kit).
The kit is specifically designed to expand horsepower across the
board, with an emphasis on increasing torque. Approximately a 20 - 25%
gain over stock horsepower.
Our special High ratio rocker arm is based on similar designs which
have been used for years in automotive racing engines. Causing the
valves to open earlier, open further, and close later than standard
rocker arms — a high ratio rocker can significantly increase power.
Basically, think of it as a ‘mild’ camshaft that’s easy to install!
KIT INCLUDES:
● 70.5mm forged piston kit: piston, rings, pin, circlips, headgasket,
basegasket
●
High Ratio Intake Rocker
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Valve Cover Gasket
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Detailed installation and jetting instructions
REQUIRES:
Boring, Rejetting
RECOMMENDED:
Complete aftermarket exhaust system - Supertrapp IDS2 or White
Brothers E Series.
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00327 H BORE KIT 250EX 2MM OS -- $330.00
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