diff --git a/libraries/SRV_Channel/SRV_Channel.h b/libraries/SRV_Channel/SRV_Channel.h
index 22bcc5f7791..9e6d69b2b71 100644
--- a/libraries/SRV_Channel/SRV_Channel.h
+++ b/libraries/SRV_Channel/SRV_Channel.h
@@ -415,7 +415,13 @@ public:
 
     // set MIN/MAX parameters for a function
     static void set_output_min_max(SRV_Channel::Aux_servo_function_t function, uint16_t min_pwm, uint16_t max_pwm);
-    
+
+    // set MIN/MAX parameter defaults for a function
+    static void set_output_min_max_defaults(SRV_Channel::Aux_servo_function_t function, uint16_t min_pwm, uint16_t max_pwm);
+
+    // Save MIN/MAX/REVERSED parameters for a function
+    static void save_output_min_max(SRV_Channel::Aux_servo_function_t function, uint16_t min_pwm, uint16_t max_pwm);
+
     // save trims
     void save_trim(void);
 
diff --git a/libraries/SRV_Channel/SRV_Channel_aux.cpp b/libraries/SRV_Channel/SRV_Channel_aux.cpp
index 4c36ae332cc..1412957202c 100644
--- a/libraries/SRV_Channel/SRV_Channel_aux.cpp
+++ b/libraries/SRV_Channel/SRV_Channel_aux.cpp
@@ -844,6 +844,31 @@ void SRV_Channels::set_output_min_max(SRV_Channel::Aux_servo_function_t function
     }
 }
 
+// set MIN/MAX parameter defaults for a function
+void SRV_Channels::set_output_min_max_defaults(SRV_Channel::Aux_servo_function_t function, uint16_t min_pwm, uint16_t max_pwm)
+{
+    for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
+        if (channels[i].function == function) {
+            channels[i].servo_min.set_default(min_pwm);
+            channels[i].servo_max.set_default(max_pwm);
+        }
+    }
+}
+
+// Save MIN/MAX/REVERSED parameters for a function
+void SRV_Channels::save_output_min_max(SRV_Channel::Aux_servo_function_t function, uint16_t min_pwm, uint16_t max_pwm)
+{
+    for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
+        if (channels[i].function == function) {
+            // If min is larger than max swap and set reversed
+            const bool reversed = min_pwm > max_pwm;
+            channels[i].servo_min.set_and_save(reversed ? max_pwm : min_pwm);
+            channels[i].servo_max.set_and_save(reversed ? min_pwm : max_pwm);
+            channels[i].reversed.set_and_save(reversed ? 1 : 0);
+        }
+    }
+}
+
 // constrain to output min/max for function
 void SRV_Channels::constrain_pwm(SRV_Channel::Aux_servo_function_t function)
 {