Depends on the seat post, but generally yes, you do.
A Thompson style that clamps top and bottom will be fine, a Ritchey style one will require the specific cradle for that saddle.
@Dammit started
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Depends on the seat post, but generally yes, you do.
A Thompson style that clamps top and bottom will be fine, a Ritchey style one will require the specific cradle for that saddle.