1 1/8" diameter x Custom Length up to 29". Additional $10. 00 per inch beyond 29". By equalizing traction & preventing body roll, anti-roll or rear torsion bars, as they are sometimes called, have been shown to produce consistently quicker 60' times. This new kit uses only the highest quality components -
a splined 4130 steel torsion shaft (not a piece of tubing as used by some of our competitors), splined & machined, billet arms (choice of 6" or 9" arms), 4130 mounting tube & supports, plus all necessary rod ends, links and hardware.