jackshaft on a concentric shaft for chain
adjustment. XFR then machined the
rear hub out of a 35-pound chunk of
billet aluminum, and also machined the
hub to accommodate the OEM Yamaha
YZ450F brake rotor and sprocket.
Heavy-duty bearings were used in the
billet-aluminum hub, and the billet AMS
wheel was fitted with a Carlisle AT489
24x11-12 for our hard-pack terrain test.
Up front the stock triple clamps
RIDING THE BIG WHEEL 450F
were removed and wider clamps were
machined from solid billet aluminum.
The dirt bike we rode was a 2010
YZ450F converted to a Big Wheel
using the OEM forks. The final design
will have the fork clamps moved to the
inside for more radiator clearance. XFR
machined a new front hub with double-
wide bearings and a new mount for
the OEM YZ450F front brake rotor and
caliper, as well as the AMS billet wheel.
For hardpack, XFR fitted a Kenda
Pathfinder 25x8-12 direction tire. In all,
the Big Wheel kit for the 2001–2014
Yamaha YZFs has 70 parts, not
including tires and wheels, for $2590.
Kelley Blue Book lists a 2010 YZ450F
like this one for $3790, so the rolling
chassis you see here would cost about
$6600. Is it worth it to be able to shred
dunes and desert with a 60-horsepower
We got Charlie Ogden, a local pro
XFR uses a jackshaft on the wider swingarm to get the proper rear-wheel alignment, and the jackshaft rides on a concentric mount to adjust
the shorter chain. “Normal” adjusters set the longer rear axle for the final-drive chain, and the billet rear hub rides on double bearings.
This is the
seen on a
and we had
panel at full
Our left heel
Kits include front and rear hubs that accept the OEM Yamaha brake
rotors, and they’re machined to accept 12x7 rims with 4/1110-bolt
patterns and 4+ 3 offset. DWT .190 Red Label wheels are $277.90 a
pair, and DWT Nitro wheels are $179.90 a pair.