Special Features: Cylinder Item Type: Pistons & Rings Displacement (ml): 52CC No. of Cylinders: 1 Cylinder Model Name: CY15 Diameter of the Kit(mm): 44 Diameter of Piston Pin(mm): 10 Outer Diamter of Cylinder Skirt(mm): 50 Middle Height of Cylinder(mm): 88 Height of Cylinder(mm): 97 Height of Piston(mm): 401 Compression Height of Piston(mm): 172 Color: silver Material: metal + plastic Package Contents: 1 * 44MM 52CC Cylinder Assy 1E44F-5 44F-5 44-5 BG520 CG520 Assembly Pistion Kit Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.