Since 2006, we’ve gushed about Kayaba’s SSS
suspension. Having said that, we shipped out our
YZ250F forks and shock to Graeme Brough. It sounds
preposterous to mess with success, but Yamaha beefed
up the spring rates for 2014, making them too stiff for
light riders. We had Graeme swap the springs and
change the valving specifically for our smaller testers.
Given Brough’s excellent track record, we knew he was
the guy to improve on the already superb suspension.
What was the total cost of our bike build? Several
thousand dollars, but it was worth every penny. Not only
did we vastly improve the YZ250F powerband without
sacrificing durability, but we also fixed flaws in other
areas. An oversized Moto-Master front brake stopped us
in our tracks. A Ride Engineering longer link arm helped
balance the suspension and keep the shock from blowing
through the initial part of the stroke. Then there were the
sweet Cycra plastics and accompanying anodized parts
that were attractive and sharp-looking. ❏
In conjunction with Graeme Brough’s suspension mods,
we opted for a Ride Engineering lowering link. The pull rod
is longer than stock and drops the rear end of the bike. As
a result, the initial part of the shock’s stroke is stiffened
for better balance front to rear.
We couldn’t live with ourselves if we built a retro-themed
YZ250F and ignored the stock silver wheels. Much like the
works Yamahas of the late 1970s, we laced up gold rims,
silver spokes and black hubs. Dubya answered the call
with D.I.D DirtStar rims and Talon carbon fiber hubs. Not
only did the wheels tie the aesthetics of our bike together,
but the high-quality components added durability.
Doug Dubach, of DR.D, doesn’t build exhaust systems
on a dynamometer. Instead, he builds prototype pipes
and puts them in real-world situations—at the track. For
this reason, DR.D has a reputation for making excellent
exhausts. Dubach’s NS- 4 added midrange and top-end
power, but it did take away some of the bottom-end grunt
that the YZ250F is known for.
We’ve had great luck with the Moto-Master oversized
rotor. The bracket goes on easily, while the rotor provides
excellent braking power. We opted for the stock brake
pads, as we do with any aftermarket rotor. Stock pads
tend to give the best feel and feedback at the lever.