54mm throttle bodies

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#1 Post by **mangocrazy** » Thu Nov 17, 2011 9:56 pm

Were any Aprilia (Rotax) V-twins ever produced with 54mm T/Bs as OE apart from the Edwards replica?

That's it, really...

Unless anyone has a set in good nick they want to part with, of course.

D-Rider · #2 Post by **D-Rider** » Thu Nov 17, 2011 10:12 pm

No - not even the Edwards rep. Aprilia never made 54s

One of the primary things people want on the Edwards is the correct throttle bodies. They came with 51mm TB's, but had 57mm TB's in the crate with different air box and EPROM.

Basically all 54s are bored out 51s. Some have been done better than others. The fit of the butterflies is crucial as is the modification of the air bypass.
Evo made/make some good ones - along with matching 54mm velocity stacks.

blinkey501 · #3 Post by **blinkey501** » Fri Nov 18, 2011 5:43 am

check your pm

Aladinsaneuk · #4 Post by **Aladinsaneuk** » Fri Nov 18, 2011 5:53 am

As greybeard said

They do come up but the hardest thing to source is the velocity stacks

irich · #5 Post by **irich** » Fri Nov 18, 2011 6:08 am

you guys know your shit.

flatlander · #6 Post by **flatlander** » Fri Nov 18, 2011 7:51 am

Aye they do still smells funny though lol