Crotch coolers will help with the symptoms, but if you want the cure, get at least a full Stage 1 upgrade with a good tuner.
After adding a full exhaust and a free-flow air cleaner, I finally would up (through some trial and error*) with a new Vance & Hines FuelPak3.
My engine temps decreased significantly...
*previous methods were:
- the H-D SEPST and a dealer download which was total crap - in fact it increased my engine temps
- and then a set of NightRider ViED's, which helped a great deal but I didn't want the full time piggyback install.
Normal OIL temps as observed using the H-D temperature gauge dipstick were as follows:
- At stock the bike ran with oil temps around 225°, climbing to 250° in traffic.
- After the dealer remap, the oil temps rose to around 250°, climbing as high as 275° in traffic.
- After the V&H FP3, oil temps now hover around 200°, and never exceed 225°.
Also, my main concern with crotch coolers is that if your bike is already running too hot, why would you want to trap that heat and cut off the air flow at the rear cylinder?
Excess heat is one of the leading causes of engine failure...