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  • I got a Renn and don't like the head at all but an easy upgrade looks like just cutting the old head off and sticking a Silca brass head one. One of the pumps at Herne Hill had this mod and it was bombproof. 150 PSI on my clinchers and the head stayed locked on the valve even though only a push-on type.

    SJS do them for £6.99


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