The "1025" sleeves were 1.562 as I recall..... The black ones.
In that venturi/throttle bore combo(1.562 x1.750) .....If it was a Race Demon RS it was a "1025", as a Race Demon w/o removable sleeves it was a "1000", and if it was a Mighty Demon it was an "850".
Yep, the 1.562" venturi was the "1025"; still have my black sleeves.
Re the advertised size differences... I figure BG felt if you didn't pay the extra $$$, you didn't deserve the extra CFM!
