97-14 HONDA TRX250REC: BikeMaster Brake Shoes (Rear) BikeMaster starts with high pressure aluminum die-casting to make a strong, stable, corrosion resistant shoe. The friction material is chosen for a balance of performance and longevity for the application. Then it is bonded to the brake shoe casting, using a high temperature process. In order to insure that the shoe has a perfect radius, the face of the friction material is machined to make sure it is a perfect fit to the brake drum. Then, to make sure that brake application is smooth, not grabby, they chamfer the edges of the shoes, and give the material a extra chamfer on the leading and trailing edges of the friction material.Brake shoes are designed to be a direct replacement for