Gilles Tooling Chain Tensioner TCA-K46-B Aluminium Black for BMW Gilles Tooling Black Gilles Tooling chain tensioner TCA-K46-B. See if it fits your bike. BMW HP4 BMW M 1000 R BMW M 1000 RR BMW M 1000 XR BMW S 1000 R BMW S 1000 RR BMW S 1000 XR