R REDKG Officially Full-On Dubber 327 posts · joined Aug 2002 · 14 Jun 2015, 9:19 am #1015031 A lot of the aftermarket j tubes are said to be 38mm, do they have a reduced section to fit standard mufflers ? The original are 32mm .
adlbeetle66 Under the car.........again! 1,476 posts · joined Aug 2014 · 14 Jun 2015, 3:52 pm #1015051 You can buy just the j tubes, or the ones with the reduced section. I bought mine from Mick Motors, they were perfect.