Fitting Instructions ???Machined from a Nylon blockGive your motorcycle personalised styling whilst also protecting your Swing Arm from damagePuig Fork & Swing Arm Protectors are designed specifically to protect the vital parts close to ground level including expensive components such as the brake caliper disc and sprockets in addition to the Forks and Swingarm themselves. Puig Fork and Swingarm Protectors will arrive safely packaged together with comprehensive fitting instructions and any additional fittings which may be required. No modification to your motorcycle is necessary.