I got my Royal Enfield Online Store e-flyer a coupla weeks back and they had an aftermarket Ace Air Canister* air filter that reached outta my monitor and grabbed me by the stackin' swivel. It came on the big brown truck yesterday.
*While I was gettin' that link I wrote a short review of the product. They 'accepted it for moderation'. We'll see if they print it. It was generally favorable.
Here's the stock setup:
Click photos to embiggen
It took about two minutes to peel the stock parts out, and then I discovered, cleverly hidden out of sight - oh, the horror! - the most terrifying oxymoronic two words in motorcycling to come so close together:
Note to Lucas: Put the lawyers back in the box. I kid...
It was a pretty straightforward swap, although I did have to re-engineer the new bottom bracket a little. The canister missed it by about half an inch. 'Re-engineer' is a pretty high-falutin' term for grabbing the little aluminum strap with a Crescent wrench and tweaking it sideways.
The whole job took about fifteen minutes if ya don't count throwing tennis balls for my pup. Hyar 'tis ready to rock 'n roll:
I plan to replace the mickey mouse-lookin' wingnut on the top with a nice chrome dome nut. Clear the decks, Mountain Hardware, here I come! I could probably get one on my next trip to the Buell dealer, but I'd rather pay one dollar than ten. Heh.
Its makers claim that the air filter will increase performance, but frankly I doubt it. It probably won't even increase intake noise, as underpumped as these stock engines are. I have a replacement for the next part in, the one between the air filter and the cylinder head, that may in fact hop it up a little. Then there's that muffler...an' that barely bumpy li'l camshaft...an' those clogged-up as-cast ports...an'... More on all that as it develops unless they find a cure.
The Ace Air Canister looks real good. I think bikes should have round lines instead of square ones just like women, and for me this product does that.
The new air filter actually does increase the performance a little. My seat-mounted jeans-encased dyno doesn't print readouts, and you wouldn't want one if it did, but I can feel better acceleration and the exhaust note is slightly crisper.