4-link Ultra Pro Kit , Bars are 1-1/4 x .095" & 1-3/8" x .095" 4130 chrome moly without moly rod ends
The Ultra-Pro laser link 4-link system from S&W Race Cars features the optimum in tuning adjustments, 144 possible instant centers and is designed to withstand even the most severe drag race applications. The top bars are 1-1/4 x .095" 4130 chrome moly tubing and the bottom bars are 1-3/8" x .095" 4130 chrome moly tubing. Weld in tube adapters feature wrench flats for easy adjustability. All brackets are 4130 chrome moly steel and precision, water-jet cut with 5/8" holes for super strength and a wide range of adjustments. Also included is a 1-1/4" chrome moly, cross tube to reinforce the brackets and housing. Grade 8 hardware is included. No rod ends are included but S&W insists that only 4130 chrome-moly rod ends be used with any 4-link system."