|For RALLY class|
|41015 - Polished manifold conical short, 2 rings 5 fins.||41016 - Polished manifold conical medium, 2 rings 6 fins.||41017 - polished manifold conical long, 2 rings 7 fins.|
All manifold kits include gasket exhaust and springs.
Shorter exhaust: gives less acceleration, but an increased topspeed.
Longer exhaust: gives more acceleration, but reduced top speed.
Conical exhaust: top speed higher, higher acceleration and higher fuel consumption.
Cylindrical exhaust: top speed lower and lower fuel consumption.