Originally Posted by
monkeyracing
Robinson Racing makes very nice hardened pinions for Tamiya. They refer to them as "48M" or "48 metric". I believe the "proper" term is .6 module. The Tamiya hardened pinions are really good as well.
Jim
Kawada also make a metric pinion for the M-chassis (& others)
Also very good pinions.
-just another option when shopping