Back Plate For Knott 250×40 Brake Drums

• 1 pair of bolt-on back plate assemblies for Knott 250×40 drums
• 54mm dia central hole
• 4×14.5mm mounting holes
• 71x71mm hole centres
• Fitted with brake shoes and springs
• Complete with expander, adjuster, eyelet, half shell
• For Ifor Williams trailers made after March 2014

Note: Brakes should only be serviced and replaced by competent technicians