Double-Ace Racing Products Now offers the AA Engines Header with coupler, Retainer Ring and Tension Spring for use on most any front exhaust .21 sized engine. ...
Now Double-Ace Racing Products offers the AA Tuned Nitro Pipe without the header, coupler, spring and retainer ring if you already have these items to help reduce your cost. ...
Introducing the AA .67 NITRO SPEED tune pipe which provides excellent high RPM performance. Perfect for nitro outriggers and 1/8 scale boats. It fits the AA .67 Header. Perfect for racing situations. So if you are looking to add another dimension to your .67 Nitro engine. Then try the new AA .67 Nitro speed tune pipe. ...
