ARP 617-4500 SAE Bolt Kit 1/2-13 x 4.500 hex black oxide bolts ymm_17 Never requires free-air calibration when

Never requires free-air calibration when used with an AEM Controller and connector plug

Constructed from high-grade stainless steel

operated by a specially developed control kit: one on either side of the muffler and one in the active X-connection in the link pipe to create a perfect sound experience

Fastener Assembly Lubricant

the optional Akrapovič Sound Kit is available to control the exhaust valves at any time and allow the driver to choose the setting preferred

ARP 617-4500 SAE Bolt Kit 1/2-13 x 4.500 hex black oxide bolts ymm_17 Never requires free-air calibration whenSpecifications Socket Size(s) 9 16 hex UHL 4. 500 Thread Length 1. 250 Grip Length 3. 250 Thread Diameter Pitch 1 2 13 Grip Diameter 1 2 Wrenching 9 16 Head Height 0. 450 Collar Diameter 0. 850