PowerDynamo Ignition designed for the Kawasaki KX500 and KDX 175/250. This unit comes with 110mm diameter base plate and is a complete system as shown including external flywheel that weighs about the same (35 oz.) as the original. Excellent for direct replacement or when using the bike for woods ridiing or wanting the orignal low end torque. If you are going to race motocross and want a lighter weight rotor then consider the unit with a 24 oz flywheel. This option of 24 ounce flywheel is not a direct swap of just the flywheel. You are choosing one complete system or the other.
Fits models with 110mm base plate (will not work on models where stator is directly bolted to engine case:
1988-2005 Kawasaki KDX175 | KDX250 | KDX500
1988-2004 KX 500cc
Old Penton part #40303 with 35 ounce, #40305 with 24 ounce