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Blimey :shock:; there has been discussion on the merits of this design previously a while back - Some may think that they look cool, but do they actually give any advantage?mk one":17ie8nsu said:https://www.ebay.com/itm/BIKEDRIVE-suspension-crankset-172-5mm-VGC-STRONGLIGHT-VERY-RARE/123718524198?hash=item1cce32dd26:g:zooAAOSw44BYkOR5