Roost damaged the finning on both of our radiators in a relatively short period of
time. The best solution was Twin Air radiator sleeves.
We destroyed both radiators in 30
hours of racing—and not from crashing. It’s important to note that the
MXA wrecking crew raced its CRF450
every week. We don’t think that a
professional practice rider would suffer the same amount of damage. Why
not? Racing takes a bigger toll on
the radiator vanes than play riding,
because racers have no choice but to
follow in the roost of other riders. The
inherent problem with Honda’s radiators is that the vanes on the CRF450’s
radiator guards are so widely spaced
that they direct roost and rocks into
the radiators instead of blocking them.
The finning on our radiator cores
looked like someone had been hitting
it with a tap hammer. Most of the fins
were dented closed. The fix, albeit
two expensive radiators later, was
Twin Radiator sleeves. Twin Air’s
mesh-like screens knock down the
hard stuff without obstructing airflow.