WSM Bearing Housing - Yamaha 003-402-01 Speedster Dual Exhaust System Improved power transfer though the

Improved power transfer though the clutch

Side vent still serves as an exhaust vent even when the front shutter is closed on the top duct

LeoVince Most Popular Product Lines - FACTORY S - EP

(Note 2020 + R1 riders can call in the orders to have front 02 sensors added for an extra charge if your tuning cannot remove the 02 sensors)

Note: Bike side and the separate listing bench tuning kit do the same thing but one tunes off the bike (remove ecu bring to computer) and the other attaches to the bike (this listing attached a small harness to your motorcycle)

WSM Bearing Housing - Yamaha 003-402-01 Speedster Dual Exhaust System Improved power transfer though theAssemblies come with bearing and seals installed