ESPADA EXHAUST PIPE BACK PRESSURE (BP1) MODEL : Y15ZR Honda RS150 / RSX150 LC135 LC135 V2-V7 DESIGN CUTTING : CUTTING STANDARD MANIFOLD SIZE : 28MM / 32MM Package include: (1) Exhaust Cover (2) Muffler cover (3) Oxygen sensor (4) Bracket & Screw Features: - Low Noise - Improved HP & Torque Note: - Only 1 screw will be given for the bracket. Please use back the original screw on the top hole.