Harley updated the axle profile and material in 2020, requiring higher torque for a tighter tolerance.

Example: A 2012 Heritage Softail (FLSTC) specifically lists in some guides, highlighting the importance of year-specific verification. 2000–2007 (Early Twin Cam Softail) : 60–65 ft-lbs . 2. Required Tools & Preparation

: 95–105 ft-lbs . 2008–2017 (Twin Cam Softail) : 95–105 ft-lbs .

: A 36mm socket is standard for most modern Harley-Davidson rear axle nuts.

: On Softail models with low-hanging mufflers, you may need to remove or loosen the exhaust to gain straight access to the axle nut. 3. Critical Installation Steps Check Rear Axle Nut Torque

For most Harley-Davidson Softail models, the rear axle torque specification generally falls between . However, newer Softail models (2020 and later) often utilize an updated specification of 135–145 ft-lbs (183–197 Nm) due to changes in axle material and design. Harley-Davidson Softail Rear Axle Torque Report

: A 1/2-inch drive torque wrench is recommended to reach the high-torque requirements of 100+ ft-lbs.