O-Sensor Port Standard All RB Racing LSR exhaust systems come standard with a machined and heliarced oxygen sensor boss just below your front exhaust port. Every LSR Exhaust is custom made for your particular application. All LSR Exhausts are fully heliarced for the cleanest possible appearance. It takes five times longer and is much more expensive but itis the best way to do it. Front pipe mounts to a special plate that is bolted to the transmission.
Rear pipe is attached to the front pipe with a tubular support that runs underneath the front pipe.
Front and rear pipes are locked together with double bolted brackets. Aftermarket FXR frames often do not use the oem steel pivot, so it is up to the customer to adapt the pieces we provide for their particular application. A tubular support bar bolts directly to the chassis. This support bar in turn has two bolt brackets which attach the front and rear pipes. Two bolt tabs attach front and rear pipes to this tubular support.