DW: What are the major differences
in setting up an ATV for Grand Prix
racing versus motocross?
AM: There are quite a few differences. MX ATV’s are lightweight, and they
run standard fuel tanks and small MX
tires. They do not run any sprocket
David runs Maxxis Razr MX tires mounted up to DWT beadlock wheels in the
rear of his quad. They also run Tire
Blocks to help prevent flats.
every flat-track series on the West
Coast and was able to go back east
and race quite a few ATV Nationals
also. I can’t remember how many
exactly, but I won around 20 ATV Pro
championships on the West Coast. I
raced a 1988 Honda 250R ATV.
DW: Are you excited for the ATV MX
Nationals? What preparations do you
have for this new endeavor of yours
and Haagsma’s career?
AM: Yes, I’m very excited. We have
been fortunate enough to be able to
race a few ATV MX Nationals each
year for the last few years, so we
know how it all works back there,
and we are not going into it blind,
which is great. The biggest thing on
my end is making sure every single
part of our program and bike builds
are perfect, and David is in shape and
ready to go. If one thing is off racing
with the big boys back east, it’s over.
Everything has to be perfect to have
a chance for podium finishes back
my rookie year goes, I think I’ll be
more of a threat in my second year.
DIRT WHEELS: How long have you
been a part of David Haagsma’s racing career?
ALLAN McCOSTLIN: I started helping David when he was 13 and have
been helping ever since.
DW: Where did you get your first
steps into the profession of being a
mechanic for racing?
AM: I use to race professional
ATV flat track. I actually rode for our
engine builder, Curtis Sparks, for a
while. I gave it up for a job offer I
could not pass up. I then met David
and his family and started wrenching
for and helping him. I’ve done this
full-time for around five years now.
DW: You mentioned you raced yourself; when and what series/machines
did you race?
AM: I raced pretty much any and
A Fourwerx seat cover with ridges sewn into the design help
you not move around on the seat when you don’t want to.
K&N filters are used on Haagsma’s TRX450R to let it breathe
deeply. The modified airbox allows as much air into the engine
Fasst Co. Flexx handlebars and a Roll Design steering stem
get rid of unwanted vibrations and help soften hard hits so
your arms won’t get tired easily.
Roll Design nerf bars, heel guards and pegs are run on all of
David Haagsma’s racing quads. They offer great protection
and foot traction.