Who: PowerTrax at Summit Racing Equipment What: Grip Lok Traction Systems
Why: It’s tough to beat a locking differential when it comes to full, I-need-it-now traction. A locker effectively ties the two driven wheels together so both get equal amounts of engine torque. PowerTrax Grip Lok differentials combine the action of a traditional locker with a fully machined forged-steel case for strength. The Grip Lok is all mechanical and works automatically. There are no clutches to wear out, no switches to activate, and no wheel slippage. The Grip Lok can take whatever you can throw at it, and it’s backed with a one year, 100,000-mile limited warranty. It can be found at Summit Racing Equipment for Dana 30, Dana 40, Dana 60, Ford 9-inch, and Chrysler 8.25-inch rear ends.
Where: 800.230.3030; summitracing.com