![]() ![]() shape of the pulley cage (GS has a slightly curved shape).length of the pulley cage (GS has about 3-4 cm between pulleys).The following are two key points to distinguish them. ![]() It is difficult to tell whether your rear derailleur is SS or GS, as the latest models do not have a clear model number stamped on them. What is your rear derailleur, SS or GS? How to distinguish You can also choose a cross ratio of 13T-25T on the CLARIS, but the 105 with 11 steps of 14T-25T is more cross ratio. In addition, the 105 has a small maximum low sprocket and a large maximum top sprocket, which means that extreme cross ratio sprockets such as 14T-25T can be used. On the other hand, even if you use a wide ratio sprocket, the 105 has 11 gears, so the difference in gear ratio per gear level will be small, allowing for smooth shifting. It’s an image that makes you cringe when shifting gears. Sprocket selection varies by product.Īs you can see in the table above, even in the same SS series, the CLARIS has the ability to select a larger (lighter) gear for the low sprocket, so you can choose a sprocket with a much wider ratio. The “low sprocket maximum” of the RD-R7000-GS we saw earlier was 34T, so there is only a difference of two teeth between the RD-R2000-SS and the RD-R7000-SS. ![]() We can see that the RD-R2000-SS is wider and the RD-R7000-SS is narrower.
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