�� Setting has become easier by clarifying the usage (road surface & layout).
�� For the spring for front. by adopting the rough wound type which is excellent in the response of expansion and contraction. it is the best match to YD-2 series with high traction. and the cornering characteristic which can feel the front grip firmly is realized.
�� There are two types of spring for rear. forward type and side grip type. Of course. by adopting different materials. it covers all circuits / all road surfaces.
�� Dare not to paint. to maximize the performance without compromising the original spring characteristics. However. sometimes a slight rust may appear on the spring surface. especially on the upper and lower cut surfaces. but in that case. we recommend anti-corrosion treatment with RC spray etc.