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one for 4 stroke with quicker response especially in the first phase of acceleration
with full CNC reinforced cover
} The Racing Spark Plug intended for competition should be able to resist to extreme conditions:
were used for these superior quality products:
Dual Compound : soft (grey) over firm (grey)
BOYESEN Rad membraan systeem - Honda CR125R one for 4 stroke withBoyesen engineers have applied a range of technical innovations to their range of intake systems to ensure optimal power, torque and smoothness: Aerodynamic Surface Optimization, Model Specific Reed Petal Tensioning (specific valve for each model) , Material Fuel Resistance (materials resistant to hydrocarbons) and Multi Stage Reed Timing (valves that open in stages). The BOYESEN valve diaphragms have been specially developed for each engine model
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