Quote:

Does anybody make the billet steel drum for a 904?



TCS

I personally wouldn't bother unless, I was 100% sure I needed the
extra clamping of the bigger piston.

I'm using an OEM front drum on my first 904, due to lack of funds.
The next one will be aluminum. 904 drums don't have the front
drum explosions the 727s do, as their mass and diameter are
much less.

727 high gear drum is 3480.5 grams and 7.496" in diameter

904 high gear drum is 2378 grams and 5.876" in diameter

This example shows the 904 drum is 2.43 lbs. lighter and 1.620" less in diameter.