Michael M.
Wrong item ordered, staff immediately addressed and got me new one expedited
Zach M.
Installed in a 2018 F150 RCSB. Super easy to install, and was just the feature I was looking for! No more spinning 1 wheel during shifts up to 80mph! Locker engages and disengages super fast too. Can't wait for snow!!!!!
Greg A.
Had to modify your design a little. It appears the relay was an off the shelf system? I ended up cutting the two large gauge wires and soldering some smaller gage wires and soldering them to the trucks harness. The butt splice was to large and caused an intermittent connection. Once completed, the system worked great!
Gerry G.
Waiting for the rest of the parts.
Jason D.
Took the sled to the end. Stayed locked up whole time.
XANDER W.
Took me 10 minutes to install! Super easy and will definitely recommend to friends
jason b.
Just what the beast needed for those fish tail launches! But be careful or you will lose control.
Marion P.
Fairly easy to hook , instructions where easy to follow. Can definitely tell when it's locked in. Works perfectly.
Brendon D.
No more one tire fires. I can look cool now
Adam F.
Works great. Easy install. Go from one wheel peels to big boy burnouts in no time
Matt S.
Install was quick and easy. Locks the rear differential for use at any speed. Does exactly what I wanted it to do.
Tyler S.
MF is TITS !! Definitely worth it
Darin D.
Great products everything Iv ever ordered has been amazing. Fast shipping and works as it intended
Ken P.
Got the ol traction bars to help with the massive torque the super duty produces with mods!
chris w.
Love that I can use the locker all the time now and not be limited by Ford. Only wish the light could still function.
Brandon W.
Easy install! Had my 13 year old son do it. Once installed now I have the faith in my rear end to lock like it should when I need it! Great product!
Michael O.
Great service and fast shipping!
Regis L.
Thank you. I love it.
You guys have good product.
Gregory T.
Install was fairly easy diff lock works great and seems to engage and disengage faster and more reliably, good addition when paired up with the full send mod would like to see you guys figure out a way to keep abs system working but able to completely delete stability/traction control
Nick W.
Easy install. Top notch quality.
Michael W.
Great Especially the YouTube video how to do it Fast shipping I would recommend
Daniel H.
SPE has done an awesome job on making great products and very helpful instructions on how to install their products for people like me that like to do things on our own. I would also like to say the have an outstanding customer service. So if you have any questions on a part or not sure of something they are very knowledgeable and willing to help. I will definitely recommend them 100%.
Chris T.
I got it on, not too bad to install. Not a lot of room down and it's kinda dark. If i was better at telling colors it would have gone faster but, after my wife straightened me out it went in and everything works, I think. Haven't used it yet. Not in to burning off tires that cost over $250 apiece, so will wait until do some off roading to test it. Quick delivery was nice.
Bryon N.
Easy instructions just in a tight place to get to. Definitely will do business with them again!!
Robert H.
Worked as advertised, instructions were on point and shipping was fast!
Kyle S.
I have a Kc whistler stage 2, 10.3 mm RCD Stroker pump so I can really lay down some bernies. But nothing worse than going to do a burnout leaving a truck meet and getting the one wheel peel.. EMBARRASSED is not the word..lol.. So I heard about this diff lock kit and ordered it on Sunday it was on my doorstep Tuesday and took me about 20 minutes to install and JESUS CHRIST I can lay the most beautiful full posi burnouts now.. Locks in and out on command!! Thanks SPE!! I'll be Ordering more
robert m.
Works perfect and easy in stall.
Hunter M.
Was a breeze installing and absolutely no trouble with it since install
John B.
Works as stated! Great product!
John P.
Easy to install. Works perfectly just as described. 2018 f150 coyote motor with whipple supercharger. This is what I was looking for. Great communication and prompt service.
Dawson W.
It can’t be good for your locker to engage and disengage now it’s on when you want and off when you don’t! Super nice for towing in loose terrain or full send burnouts if wanted.
Matt M.
Rear lock kit is easy to install but access to where you need to get to is aggravating. If you are a lefty, you have a big advantage. It took me an hour just because I'm 6'2" trying to squeeze in front passenger floorboard. Works well though but you will loose your rear locked light on dash.
Mike S.
Great product great service delivered on time easy install Supposed to do
phillip c.
Sucks working under the dash, but super easy to install
Vernon D.
Easy to install and worked great!
Mike H.
The wire on My 2017 looked yellow and green . I emailed the company and they responded very quickly with a pin diagram. Whole job is a easy install not knowing what your doing 1 hr max .
Timothy G.
Delivery was on time and was a super easy installation. The instructions were simple to follow with written instructions and a simple wiring diagram. The rear locking diff light does not come on when you pull out on the diff switch but if you are a driver and not a tenderfoot this won’t matter.
Cheap full send fun switch.
Get ya some!
Michael C.
Easy to install, works like a dream.
Would like to see an easy ABS disconnect similar to this.
Love what you guys do!!!
Tony S.
Shadow here!!! Just bold the SPE differential lock what a amazing product no more one tire fire the differential lock from SPE does exactly what they say very easy to get to once you remove the two nuts from the stud and unwrap the harnesses pull right out clip wire hook wires put it right back in !!!!!! It planted the power to the ass end of the truck!!!!!! I would recommend this product to everyone with the differential locking system From SPE!!!!!! I will post a video later in a week or two of the BIG Borg Warner 472 turbo burning both back tires locked in with the SPE Differential lock
Rob S.
Very disappointed in what's required for the install. I did not expect to be cutting wires in my truck based on the description of this product. Love SPE products but definitely feel a bit mislead by this product.
Jamie T.
Was a little difficult to put into place but only about a 4 on 1-10 scale. It seems to be working good as promised and no issues to note. Thankyou!
Jamie
Tim H.
I love the snug fit. Looks great. Can't wait to get more of your products.
sid s.
Nothing like being able to lock the rear end up to any speed makes big difference off road and on road
Jeffrey S.
Happy I can keep my diff locked in 2wd and 4h over 20mph!!
Chrystopher J.
Awesome products! Excellent customer service and quick response time! My truck runs and sounds amazing! Will definitely keep purchasing from SPE!
Edward W.
Easy install, good directions.
chad D.
Easy to install. Works great
Jeremy H.
Works just as it should another awesome product
Noah H.
It works FUCKIN PHENOMENAL, so worth the money and why did I not have this before ?? 11/10
Trent B.
Works great simple install
michael m.
Works great. Easy install
Jesus O.
Easy to install works really good the only thing I didn’t really like is the light on the dash no longer appears
Dustin B.
Super easy install and great instructions
Matthew H.
Works great. I’ve used it a bunch of times already
William D.
Works very good.so much better than stock
Jordan R.
Install was straight forward with their instructions. Little difficult to access down there in the kick panel (I think that’s why they say so easy a chick can do it) because small hands would help on this one. Highly recommended to you guys!
Jeremy M.
Does exactly what it says it does. I really like the instant engagement of the locker. The instructions were great but installation is not easy due to the awkward location of the module.
fred c.
Works as advertised
Travis H.
The diff kit was easy to install and works great.
Allan D.
Product works great! Easy install despite working in a tight space, but you can't knock SPE, it's where Ford put it. It's nice plowing through the desert and have predictable cornering performance knowing the rear end is locked until I decide otherwise. It's a shame I had this kit in my garage for years and barely just installed it a month ago.
Matthew S.
Easy to install and worth the money!
Jeffrey G.
I waited 3 years for this to be perfected. Works great, but having small fingers would have been helpful for an easier installation. Great work on the final design.
Blake R.
Before installing SPE's full lock diff kit, I would be embarrassed and honestly confused as to why my truck seemed like the only one that would leave one small uneven mark on the pavement after a burnout attempt or a launch. So, I ordered this product and the installation was such a breeze I still didn't believe that it changed anything. So I figured there's only one way to know for sure (or at least the most fun way) and boy was I wrong. SPE's full lock diff kit performed exactly as described and now I can relax knowing that whenever someone "peer pressures" me into doing a burnout, I will be more than ready to burn the tires evenly for as long as I want.
PS: everything I have ordered from SPE so far has been delivered on time and has performed either as described or better. Great Company! Keep up the good work!
andrew r.
Great kit. Easy install. Works perfectly the way Ford should’ve sold the truck with this option. Only complaint I have is I ditched the electrical splice on the white wire for a more solid connection. As shipped, that connector didn’t chew through the wire to make contact and left the diff full lock 100%.
richard h.
Quick Easy install,I just tucked it up in the corner and you can’t even see it.
Stephen M.
Literally took me only 10 mins to install and works perfect with detailed directions to get it done right! Very happy with it!!
Manuel G.
Super easy to install!!! Great addition to the truck. I trust SPE.
Cesar E.
Need to make spe full lock diff kit for the 2014 f150. I would really like to buy one
timothy b.
Great product! Installation was simple. Would have been a lot easier if Ford would give you 2 more inches of wire? Seems to work flawlessly? Haven’t had a chance to play with it much?
William T. R.
Fast and easy!
alexander b.
I just got it installed directions are very simple straight forward can highly tell the design and research of the product was dead on works as it said and does more then I thought I needed worked great pulling a trailer out of mud without having to kick on 4x4 needs a higher star rating then it lets me put good bang for your buck
Jeremy S.
Very good item would buy again lots of fun
Bailey J.
The locking diff kit is AMAZING what els can I say other than it does Exactly what they said! Keep up with the great products
Johnnie W.
This product is amazing and works just as described. Thanks
Jerrod H.
Easy install. Comes in handy pulling loads up gravel roads when I don’t want to lock in 4wd.
Austin C.
Took 10 minutes to install and works great
Jerry C.
Took me 10 minutes to install!
The brown violet wire looked a lot like a gray violet wire on my 2016 f250, But hey it worked! Lol
I'd suggest spending a little time on a soft surface making hard turns with locker on to get a good feel for when its engaged/ disengaged. Was hanging up a little on me but you can feel it. Great fix!
My B.
I was sold at cooler burnouts and so easy a chick could do it so I gave this awesome little unit a try, I installed the fun locker and it works just as they said it would can’t believe I didn’t do this sooner.
All joking aside SPE makes some very quality stuff and they are extremely informative, I will definitely be coming back for more go fast goodies and quality workmanship.
Kawika S.
Works like a charm. Full traction at any speed.
Adam S.
Very easy to install. Clear and concise directions. Even better it still uses the factory switch. No cutting or drilling to install. Highly recommended. And as always customer service is top notch
Stan N.
Very well thought through and I love it who needs traction control on a pickup thanks again Stan
Kaden V.
Super easy install, and it has worked flawlessly since.
james s.
Easy install and works great
jerry j.
Not whole lot room to connect wires even when you disconnect them from the box . Super easy install just a bit difficult to get at wire harness. Definitely keeps rear locked . Probably b nice in snow and on beach .
James A.
Nice looking parts
Dalton V.
Super easy and straightforward to splice on, a little cramped to get to the tccm in the truck but still doable. Only took about 15 minutes after getting everything taped up and looking good. Works just like it should! Great product
James C.
Works as advertised! Easy install if you’ve ever wired something up.
Joseph L.
Over it took some time to figure out because Instructions were very blurry . Everything is working as promised. Great produvt!
Arch M.
installation really easy. Works as it is described. Already recommended to my friends. Happy with it.
Julian T.
I love it pop out the switch and let it rip!!. Easy install easy instructions..
Jeffrey W.
Fast shipping high quality highly recommend
Brandon W.
Easy install works good in the Florida woods and sand.
Bo P.
Works awesome stays locked like it should have when it was put in the truck unlocks when I dont need it cant wait for my upgrade kit so I can do some smokey burnouts thanks spe.
Roseanne B.
The part was really easy to install. The instructions that came with it were self explanatory.
Curtis a.
Got it for my 2015 f250 was easy to I stall. One wire said violet and brown to cut in the Instructions I would say mine was more violet and gray in my opinion. Is working as instructions say so vary happy. :)