Forge Motorsport Toyota Supra GR MKV A90 / A91 / B58 Boost PipesThe Forge free flowing charge pipe kit will increase flow and improve the reliability of your B58 engine from Supra. These high quality aluminium pipes are a direct replacement and will fit in place of the OEM plastic pipe. The OEM pipe can become brittle and fail under increased boost pressure, so we have developed a replacement with an increased diameter, which helps to reduce turbulence and maximize flow into the engine. Larger diameter giving