*There may be changes in product specifications due to the manufacturer's reasons.
To improve SR engine response, the crank is 2kg lighter.Lightweight axe-shaped cranks" are made by shaving a circular crank little by little to achieve the ideal balance, forming a beautiful axe shape
This crankshaft is made from the one for SR400 and cut by a machining center to eliminate individual product differences and to create a beautifully curved cut surface. This curved surface and sharp knife-edge construction also reduces crank resistance as it rotates while immersed in oil in the engine, thus reducing power loss!!!
The SR400 crank, which weighs approximately 7.6kg, has been lightened to 5.6kg by reducing the weight by 2kg. The lightweight crank ensures a smooth blow-off! By setting the weight specific gravity to the counter side, the engine is made to blow smoothly and energetically from low to high rpm while retaining the torque feel of SR as much as possible. Vibration is a concern, but since each crankshaft is individually centered, vibration is much less than that of a normal SR400 or SR500 crankshaft.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
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