Jeep WRANGLER 2020 Owner's Manual page 221

Maximum Recommended Downshift Speeds
CAUTION!
Failure to follow the maximum recommended
downshifting speeds may cause the engine to
overspeed and/or damage the clutch disc,
even if the clutch pedal is pressed.
Gear Selection
Maximum Speed
NOTE:
Vehicle speeds shown in the chart above are for 2H and 4H only, vehicle speeds in 4L would be significantly less.
Manual Transmission Downshift Speeds in MPH (KM/H)
6 to 5 5 to 4
80 (129) 70 (113)
STARTING AND OPERATING
4 to 3 3 to 2
50 (81) 30 (48)
219
2 to 1
15 (24)
5