classic motorcycle forum

I’m quite familiar with the EJ box. Albion boxes are common in the type of bike I favour.
Sprockets are not a problem. I have mine made. I enquired at an industrial transmission place who directed me to the machine shop that made their sprockets. Easy as that.
Sprocket blanks come as either “flat plate” or with a central boss. How the job is addressed depends upon the capabilities of the machine shop in question.
Take both your sample sprocket and the sleeve gear it fits on when you make your enquiries. Be organised and prepared to make a decision on the spot. Most firms dislike dealing with the average motorcyclist. They dither and moan and always cry poor. Be businesslike. We could start a whole new thread on why businesses can’t be bothered dealing with motorcyclists. They are their own worst enemy.
Tell us how you get on.

Hitchcock motorcycles is the goto place for Enfield stuff. They have a good website. All the 4 speed gearboxes as based on Albion even the internals and the clutches but the dimensions may vary. Bullet final drive chain is 5/8" × 3/8", I think the 250cc bikes used a smaller chain, might be worth checking.

I may be talking nonsense but that looks very much like a final drive sprocket off a 4 speed Royal Enfield Bullet. The gearbox was Albion, even the spline looks similar but could of course be a different size.

Hello everyone, totally new here but hope someone can help me.

For my Albion EJ gearbox (3-speed, clutch and kickstarter) I am looking for the 17T sprocket (part BJ12).

As attachment a picture of a 14T sprocket (part BJ12a), and 2 copies of the Albion part list, which I can share with you if you like!
The 14T sprocket is available as well.

Does anybody knows where these can be bought?

Thanks in advance, Cees

Hi Geoff,

Just be wary of too much oil: if the crankcase gets over-full with oil everything gets terribly hot and bothered. The trick is finding the Goldilocks flow: not too little, not too much, but just right.

Good luck!

Leon