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. ...
Double-Ace Racing Products present the AA .90 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 = 3.7 "
Exhaust ID = .735"
Exhaust OD = .790"
Intake ID = 1.130" ...
