We are an independent, bespoke supplier of motorcycle parts and accessories. While our products are designed to be compatible with Royal Enfield models and meet high standards of quality, we do not have any formal relationship or endorsement from Royal Enfield or any other motorcycle manufacturer. Our parts are intended to match the performance and specifications of the original equipment but are not original parts nor endorsed by the motorcycle companies. " MANY SIZES AVAILABLE  30mm internal Diameter x 45mm Outer Diameter x 135mm Length Internal Diameter x Outer Diameter X Length is as follows: 24 mm x 28 mm x 130 mm 24 mm x 36 mm x 153 mm 25 mm x 40 mm x 225 mm 26 mm x 32 mm x 175 mm 27 mm x 34 mm x 132 mm 27 mm x 35 mm x 120 mm 28 mm x 42 mm x 142 mm 30 mm x 35 mm x 168 mm 30 mm x 40 mm x 140 mm 30 mm x 45 mm x 135 mm 30 mm x 45 mm x 210 mm 30 mm x 50 mm x 145 mm 30 mm x 50 mm x 150 mm  30 mm x 50 mm x 190 mm 30 mm x 50 mm x 240 mm 30 mm x 54 mm x 235 mm 31mm x 46 mm x 152 mm 32 mm x 45 mm x 154 mm 32 mm x 50 mm x 155 mm 32 mm x 48 mm x 150 mm 34 mm x 37 mm x 152 mm 35 mm x 55 mm x 250 mm 38 mm x 55 mm x 340 mm 42 mm x 60 mm x 330 mm 52 mm x 52 mm x 260 mm 38 mm x 55 mm x 360 mm