I am thinking an 84 pro class or supergoose. Serial # M4-B7564. I found it at my daughter's school. Kid was riding it across the playground and I ran him down. HAHAHA

I think the Expert came with a steel sprocket, so my guess is that your bike is a Californian.

[ October 07, 2006, 04:54 PM: Message edited by: Dave Muggleston ]

I agree with Dave, 84 Cali with the wrong bars, seat, post, etc.

The Pro-Class wheels are worth the chase alone.

Yeah I'd go for Californian or Supergoose - check the fork decals.

SUPERGOOSE should have 2 extra holes in the brake bridge and larger tubing on the rear triangle.It is an Expert or Cali .......

Looks like an 83-84 Cali to me judging by the aluminum Pro Class wheels and Pro Class spider (Expert had steel wheels).
A Supergoose has 3 holes in the brake bridge and fat rear triangle as was already mentioned.

I thought that every looptail Mongoose without stickers was a Pro Class? At least that's what they all say on ebay.

-Dave