Jims 6-Speed Overdrive Super Kit 8085

Extended highway cruising demands an engine that can breathe easy at sustained speeds, and the JIMS 6-Speed Overdrive Super Kit 8085 delivers exactly that. By dropping your engine RPM nearly 475 at 75 mph, this transmission conversion reduces fatigue on both you and your drivetrain while improving fuel efficiency. The added 6th gear also eliminates the vibrational stress that comes from over-revving a stock 5-speed, resulting in a noticeably smoother, quieter ride.

This is a genuine transmission upgrade, not a bolt-on accessory. The kit converts your stock 5-speed into a purpose-built 6-speed with a close-ratio 1st gear (2.94:1) that maintains strong acceleration off the line while the overdrive 6th gear (.86:1) handles the cruise. Built in the U.S.A. from high-quality materials, it's engineered to handle sustained performance without compromise. Note that installation requires a speedometer sensor block-off plate kit and recalibration to maintain accurate odometer and speed readings.

• Converts 5-speed transmission
• 6-speed configuration
• 1st gear: 2.94:1 ratio
• 6th gear: .86:1 ratio
• Reduces RPM ~475 at 75 mph
• Minimizes drivetrain vibration
• U.S.A. manufactured
• Requires speedometer recalibration
• Professional installation recommended