Product Name: Torque shifter. Product Description: The roller guide has never been seen in Sigus X pulleys so you can experience a sharp rise and torque-full acceleration without a tapered straight compartment. ■ In addition, we use a large weight roller with a diameter of 0.8 inches (20 mm) and width of 0.7 inches (17 mm), so you can simply increase the number of engine rotations and run the engine with a powerful transmission torque. ■ No compromise on the drive tune, regardless of the displacement, this is a masterpiece that plays an important role in the user. ■We recommend using our reinforced belt at the same time. [Compatible models] Signus X 1 type Domestic specification SE12J [5UA] Taiwan specification [5TY] Signus X 2 type Japan specification SE44J [28S] Taiwan specifications 4C6 1CJ ■Signus X 3 type Domestic specification SE44J [1YP] Taiwan specification [1MS] BWS 125 S9: BWS X [46P] ■AxiStreet ■Majesty 125 ※Signus X 4 type 【BF9】Domestic ※Signus X 4 type 【2UB】Taiwan ※BWS 125 2 type 【BG1】Domestic ※BWS R 【2JS】Taiwan ■Above ※If you install it on the stamp car model, you can use it with the original type 4 Use with this product. [Current product specifications] Pulley face diameter: 4.6 inches (118 mm); Pulley body diameter: 4.5 inches (115 mm); Pulley boss (for only) Diameter: 1.0 inches (26 mm); Length: 1.8 - 1.9 inches (47 - 48 mm); Roller moving width: 1.1 inches (29.5 mm); Pulley length: Approximately 14 mm). Accessories: Shim washers x 2, 0.02 inch (0.5 mm) x 2, lamp plate (only), sliding pieces x 3, weight rollers x 6 (for only), initial attachment: 0.3 oz (8 g) x 3, 0.4 oz (10 g) x 3. Note: This pulley uses a roller diameter 0.8 inches (20 mm) x 17 mm).