Baker Drivetrain Street Door Transmission Door Assembly For Harley Cruise Drive 6 Speed The Baker Street Door Transmission Door is a mandatory upgrade for any bike with a built motor. The stock Transmission door is adequate for stock motors, but it lacks the rigidity to support the increased axial loads generated by the gearset in high horsepower applications. The Street Door is manufactured with 6061-T6 aluminum and features 28 wider bearings than stock. The bearings are retained with a 6-bolt steel 1/8 plate, phantom clutch lever movement is reduced by 90 and preventing the bearings from walking under load. Features: Increased rigidity protects door bearings and reduces phantom lever play Single 6-bolt steel plate retains bearings laterally as opposed to two small snap rings found in the stock design Manufactured with 6061-T6 Aluminum 28 wider bearings when compared to stock The bearings are retained with a 6-bolt steel 1/8 plate, phantom clutch lever movement reduced by 90 Installs with no modifications and includes mainshaft and countershaft nuts