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This is the new J&M 400w ROKKER® XXR EXTREME Custom 2-speaker & amplifier installation kit for 2014-2020 Harley® StreetGlide or Ultra with stock Harley 4
These are THE most powerful 5X7â speakers you can buy for your Harley and they will perform extremely well when used with a medium to high-powered accessory amplifier
so you'll need to build your lay-frame swingarm to lay frame at 10
Part # 11315A
Stepped 1-3/4" to 1-7/8" headpipes
ThunderMax ECM Integral Auto Fuel Management System Harley Touring Bagger 23.5+ VVT and Non-VVT FXCWC This is the new J&MBRAND NEW PART# 309 605 Fitment: 2023. 5 and up Center Cooled Models VVT or non VVT Touring models ThunderMax is a performance driven, award winning ECM built exclusively for EFI equipped Harley Davidson motorcycles. Designed as a stand alone replacement for the factory ECM, the 309 605 arrives fully assembled with wide band oxygen sensors, plug in harness, AutoTune module, USB communication cable, and everything you need for a straightforward
