*Drilling of the handlebar is required. *Harness extension side cap (inner diameter Φ18mm) is required separately. *Depending on the model, this product may interfere with the master cylinder and brake hose. *The shape of the handlebar may vary depending on the year and model. *Install with a gasket in between as in stock installation. (Brake hose joint thread pitch is 1.00mm) *The part number (4-digit number after HB) is stamped on the center of the handlebar for your reference when replacing the handlebar. *There may be changes in product specifications due to the manufacturer's reasons.