Part number:NIS-411-152.43H

★ Grade Tested (X-Ray & Sonic) 4340 Forged Steel Forging

★ Quenched and Heat Treated

★ Shot Peen Hardness Treated (34-38HRC)

★ Quality ARP 2000 Series Bolts

★ Silicone Bronze Pin End Bushes

★ Balanced to Within a +/- 1 Gram Tolerance Per Set

★ Bore Diameters to Within +/- 0.0001" Tolerance

★ Sunnen Honing Machines Along with Sunnen Diamond Honing Tooling are used for both Big & Pin End Machining and Sizing

★ 100% CNC Profiling

★ 100% CNC Drilling & Tapping

Part number:NIS-410-154H

★ Made from Forged 4340

★ Shot-peened surface finish for improved fatigue life

★ Custom designed features
★ Multi-step final inspection

★ Balanced and tested to be within +/- 1 gram per end

★ Silicon Bronze Bushings

★ Designed by in-house engineering team for high-stress racing applications

Part number:NIS-408-163.5H

★ Forged from 4340 steel

★ Shot-peened surface finish for improved fatigue life

★ Custom designed features
★ Multi-step final inspection

★ Balanced and tested to be within +/- 1 gram per end

★ Full-floating, precision-honed bronze bushings

★ Designed by in-house engineering team for high-stress racing applications

Part number:NIS-408-163.5H

★ Forged from 4340 steel

★ Shot-peened surface finish for improved fatigue life

★ Custom designed features
★ Multi-step final inspection

★ Balanced and tested to be within +/- 1 gram per end

★ Full-floating, precision-honed bronze bushings

★ Designed by in-house engineering team for high-stress racing applications