It was a dominant force racing with
the best quads on the track, in the
dunes or across the desert. Banshees
were produced from 1987 to 2006 here
in the states, and some countries continued sales until 2010. One of the cool-est attributes of the Banshee was that
it remained largely unchanged during
those years, aside from small changes
like going from upper J-arm suspension
to a regular upper A-arm. That consistency allowed for a raft of aftermarket
parts that made the Banshee one of the
most versatile ATVs ever built.
Lucky for us, we rebuilt a co-work-
er’s 1990 J-arm Yamaha Banshee with
the help of some great aftermarket
companies. It needed a lot of love after
being ridden hard for many years. We
were stoked for the opportunity to
revive this bad machine, and here is
how we did it.
A LIT TLE TENDER-LOVING CARE
Like we mentioned, this ol’ girl
needed a lot of attention. It was a full
tear down, starting with cleaning the
frame and engine. We then handed
the engine to legendary Banshee
engine builder Teddy Boyko of Boyko
Racing. Boyko and his trusty side-
kick Casey went to work rehabbing
the twin cylinder. Boyko bored the
cylinders and ported them to make
it run better. We went with a Wiseco
piston kit and ProX connecting rods.
Conpetive Crank Shafts then welded
and balanced the crank, which creates
a truer crank and better performance.
Boyko also sandblasted the engine
cases and right side case. They added
a fresh coat of high-temp paint to the
cylinders and right side case cover.
A Pro Design Cool Head with 16cc
domes was added to keep the engine
cooler, and the polished look is killer.
Another cool product from Pro Design,
the EZ-Drain, was added in case we
ever wanted to drain the coolant eas-
ily. Primary Drive offers a great all-in-
one sprocket and X-ring chain kit that
we installed as well.
In our minds, one of the best upgrades you can
add to your Banshee is the 5.6-gallon tank from
IMS. We had hours of fun without refueling.