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Cluthless operation: Rivera-Primo Centri-Force automatic clutch.(PARTS & SERVICE)(Product/service evaluation)

Rivera Engineering (now Rivera-Primo Inc. since Rivera Engineering and Primo Products merged) has long been a manufacturer of the open-belt primary-drive conversions so popular on custom Harleys. Now the company has developed and introduced its Centri-Force fully centrifugal clutch, which automatically engages when the engine is revved up, without the necessity of using the clutch lever.

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The Centri-Force clutch is available for Evos and Twin Cams (except Dyna Models) with chain-drive primaries from 1990-2006. The kits are also offered for bikes equipped with Rivera-Primo Brute IV, Brute IV Extreme, and Brute V open-belt drive systems.

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