Who says aftermarket companies don’t build TM parts? As you can see this TM is littered with aftermarket parts. Many of the
companies just do not list TM parts in their catalog due to the small quantities sold. But that doesnt mean they don’t sell them.
subframe to bring the stinkbug rear end down. We were
on a deadline because we wanted to have our ace MXA
test rider, Johnny Jelderda, race it in the MTA World Two-Stroke Championship at Glen Helen. To compensate, we
lowered the sag to over 115mm to balance out the front
and rear.You can find out how Johnny did on page 94.
We felt more at home on this TM than on any previous
TM we have tested thanks to the revised ergos and suspension. The low bars made the cockpit feel like a YZ250—
not too big, not too small. It was comfortable. The forks
were much better than we could have expected thanks to
Phillip Maassen at GPM (in Germany).
On past TM tests we would often think it was the chassis that caused problems with the handling, sort of like the
days when KTM couldn’t get its WP components figured
out. We thought it was the KTM chassis until we slapped
Kayaba SSS forks on and all was cured. At best, the stock
TM suspension components are mediocre. The GPM forks,
which were stock TM forks that were re-valved and had a
reduced friction coating on the tubes, completely changed
the way we thought about the TM chassis.
On the rough Glen Helen track, you could lighten up
your grip and let the forks do the work. It saved energy
and built confidence. The initial part of the stroke was
plush and ramped up gradually for good bottoming resistance. The shock followed the forks well and had good
absorption over rough chop. If it weren’t for the high rear
end, we would have thought we were riding a high-dollar,
built-up Japanese bike. It was impressive—and not just for
Ralf cracked the American code for TM, as well as the
piggy bank. The TM 300MX runs a cool grand over the
KTM 250SX at $8895 (not including the bells and whistles).
Think of the TM as the Ducati of motocross bikes. You pay
a little extra to get something only a few have. ❏
These GPM Performance Kayaba forks were as good or better than Yamaha’s SSS forks. They were impressive.