Motorcycle Modified Exhaust Pipe Snakes Tuning Silencer Back Pressure Core Description: 4.2 cm and apply: 4.2 cm diameter exhaust pipe installation 4.8 cm Suitable for: exhaust pipe installation diameter 4.8 to 5.0 cm (Round mouth of the exhaust pipe should not be installed long section muffler) Note: The original car exhaust pipe can not install this product Longer section better than the effect of a short paragraph Modified exhaust pipe, as long as the diameter of 4.2 or 4.8 cm can be easily installed Tips: Please measure before buying their own exhaust pipe diameter size Specification: Material: Steel Condition: 100% brand new Model A: 140mm length x 48mm diameter Model B: 85mm length x 48mm diameter Item Height:4.2cm or 4.8 cm Item Width:4.8 cm External Testing Certification:CC Item Length:8.6cm or 14 cm Material Type:Steel Item Diameter:1.89 inch Item Weight:0.2 kg Size:14cm-4.8cm; 8.5cm-4.8cm NO.1:4.2cm Short paragraph,high 8.6cm NO.2:4.8cm Short paragraph,high 8.6cm NO.3:4.2cm Long section,high 14cm NO.4:4.8cm Long section,high 14cm Package Included: 1 X Motorcycle Back pressure core