Fuel Tuner
Zippers PerformanceThunderMax with AutoTune for 2021+ Softail
✓ Verified fit for your 2021 Street Bob 114
⚠ Race/closed-course product. Ensuring legal use for your jurisdiction and intended riding is the customer's responsibility.
About this part
Complete stand-alone ECM replacement with AutoTune wide-band closed-loop tuning for M8 Softail
Options that fit your bike
- Standard$1,088.95
See it on zippersperformance.com (opens in a new tab)
⚠ Race/closed-course product. Ensuring legal use for your jurisdiction and intended riding is the customer's responsibility.