Tri-metals Protect a bike Metal 9×4 Motorbike store. Protect a bike motorcycle storage is approved to both security rating 1 and 2 by the Loss Prevention Certification Board and has achieved the Police SBD mark (Police Preferred Specification). This Protect a bike 9×4 metal motorbike store is designed to offer a unique, effective, and affordable way of protecting your valuable motorbike from vandalism, theft and the weather. Motorbike store by Tri-metals.