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. ...
Double-Ace Racing Products present the AA .21 Engine Header. You will find a lot more material around the spring holes to prevent the spring from wearing through the holes allowing for much longer life. I have the 10 degree headers.
OAL = 2.060"
Exhaust ID = .500"
Exhaust OD = .548"
Intake ID = .850" ...
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. ...
