Arrow Part Number - 52005MI Fits: HONDA -â–ª MSX Grom 125 for 2016 > 2020 Note - will require an ARROW silencer for correct fitment. Refer to model product diagram. In the diagram, a Solid Line indicates that both connected items are required for initial fitment. This Racing Collector unit is designed to be used with any of the ARROW Slip-on Silencers designed for this model. Made from Stainless Steel [AISI 304 grade] for a durable light weight item that allows performance gains. This performance header pipe is designed to eliminate the catalytic converter and allow all of theARROW X-Kone Series Silencers designed for this model to be selected for fitment. Specifications for Collector - 52005MI Features Details Header material stainless steel Header mounting Welded mount Junction (outlet) diameter (mm) 45 Sensor plug provision No CO sensor plug Yes dB Killer No Weight (Kg) 0.60