ER364S Easy to install. Protects the environment. Innovative design universal style. Adopt high quality alloy aluminum. To fit pipe size: 5.5cm O.D. to 5.5cm O.D. Bring more enjoy for your drive. Notes: while assembling after the vehicles run for a first 500KM – 1，000KM ， wind again closely for bolts and counter-loose nuts， any time be care for any loosing matters.   Package Details Weight: 368.08 g Size: 25*10.5*7.6 cm Package Includes 1 × XB-631 Exhaust Extension Pipe