The next level of increased strength driveline components for Pro Mod, Outlaw and other 2,000-plus HP applications have been introduced by Mark Williams Enterprises.

M-W is now producing oversized transmission and differential yokes manufactured from heat-treated 4340 alloy, as well as companion 3-1/2” chromoly driveshafts that use 1480 series universal joints. They are 40% stronger than commonly used joints and driveshafts. The assembly is certified to meet SFI 43.1 specifications.

Transmission yokes are available for 1-3/8-16 spline Lenco and G-Force transmissions (p/n 39070), 1-3/8-32 spline Lenco (p/n 39071), and 32-spline Liberty and Jerico transmissions with roller bearing tail housings (p/n 39074). Differential yokes are available for the 35-spline 9” Ford (p/n 39072) and 40-spline 11” M-W modular rear (p/n 39073). A matching steel billet U-bolt kit (p/n 39075) is employed with the pinion yokes.

Like all other M-W driveshafts, they are custom made to the customer’s requirements, precision phased, and dynamically balanced to G30 tolerances on the firm’s sophisticated 10,000 RPM-capable balancer.

In addition to chromoly, M-W also makes driveshafts from mild steel, 6061-T6 and Duralcan® MMC aluminum, plus carbon fiber materials. Mark Williams is also the first and only NHRA and IHRA Major Sponsor for driveshafts.

For additional information visit www.markwilliams.com, call 800-525-1963, or write to Mark Williams Enterprises, Inc., 765 S. Pierce Ave., Dept. ____, Louisville, CO, 80027.

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