Material: JIS standard A7075 Super fine duralumin specification Length: Stock length 485mm Weight: 20g (stock mass 55g)
This is a lightweight pin boss for pulleys made of A7075, a JIS standard material used in aircraft, with a hard special anodized surface. As it is actively used in aircraft, it is naturally very light and has high fracture resistance, so it is an ideal material for the pin boss of the drive train. Since the center shaft of the pulley side of the drive train becomes super light, the total weight of the pulley side can be reduced without losing the flywheel effect, and the response of the engine will be improved very much. The surface treatment is also hard special anodized, so the surface of the pulley boss is smoother than the existing pulley boss surface, so the aggressiveness to the pulley bush is reduced compared to the stock.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
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