Inner Cam Bearing

 I have heard that the late model stock inner cam
 bearings tend to wear out in the range of 25,000 -
 30,000 miles. When I heard the whirring noise coming from
 my engine I knew it was a worn bearing. I was able to listen to
 the engine through a large screwdriver and narrow down the
 source of the noise to the right side lower end of the engine.
 “Wonderful” I thought! “What better excuse to switch to a
 high performance cam?” Since I am not a speed demon but do
 like to cruise and end up doing allot of stop and go in small
 towns, I decided that a cam that would increase my torque was
 just the ticket! I used an Andrews EV-27 bolt in cam and
 really noticed a difference in my take offs. I would highly
 suggest an inner cab bearing change if your Evolution Engine is
 in the 20,000 - 30,000 mile range. While we’re in there,
 Let’s change out that cam to a higher performance cam!

While you’ve got your bike here . . .
let’s do that 30K service as well!