USA Standard Gear Spartan Locker Helical Limited Slip Differential Worm Positraction Dana 30 Front 27 Spline 3.73 & Up (SL D30-4-27-LSD)

Was an easy install, running nice and quiet with Revolution gear 4.88's and the Timpken install kit. Seems to be a quality part made in the USA. Only have around 500 miles on it at the moment, will update my review in the future after some proper wheeling trips and real miles.

Cheaper option than an equivalent Eaton, ( trutrac) hope it does the same job

Lo puse para mi Cherokee que uso para rutas de dificultad moderada pero en lugares donde solía batallar más cuando pierdes tracción en dos ruedas, te ayuda a seguir avanzando lo suficiente en la mayoría de los casos para volver a tener tracción, solamente aplico el freno para activarlo y hasta ahora me ha funcionado muy bien!

The product looks great and perhaps it will work great. First I had to barrel sand my new ring gear to make it fit on the locker. The machined edge where the ring gear mates onto was .005 oversized so the ring gear would not fit. The ring gear was to spec at exactly 4.5 inch. Second. When I did get the ring gear on and was tightening the bolts I noticed one of the allenhex bolts missing (see picture). Upon closer inspection the hole was drilled but not countersunk for the allenhex head nor was it treaded. We will see if it hold up with one missing bold. I would give it 5 stars but am disappointed with the quality control of Spartan locker. This will be the last product that I will buy from them. Yukon gear is better.

I just installed 4.56 gears in my xj and had to get a new carrier for that ratio. This locker seemed like the perfect option, and yes I am calling it a locker. It looked very high quality and had zero runout when I was setting up my gears. For the price these go for you get a new carrier that fits 3.73 and up gears and a locker that is completely undetectable on the road in 2 or 4 wheel drive from what I can tell. And it literally shocked me at how much traction it provides off road. The video I shared is of the first off road trip with the new gears and this locker. My rear end in the back is still just an open carrier so you can really see just how good this Spartan helical locker is when my jeep Gets in a bind. When I started spinning and not going forward, I just tapped the brakes and it locked the front axle up immediately and popped me up and over that rock. I was shocked at how good it worked and was a little bit more jerky with the throttle than I needed to be but the jeep got it done! I hope they make one of these for my chrysler 8.25 rear end and I will definitely buy it. Awesome product, I would give it 10 out of 5 stars if I could.