Price: $1.00
Pros: heavy duty and looks awesome
Cons: none
Recommended? Yes

Comments: got for christmas and its awesome slammed right into a rock and didnt do a thing

Price: $109.00
Pros: heavy, indestructible. Fits behind front tie rod, no contact, and has a hex head cap screw, and not a torx, or an allen (like Warns)
Cons: Must paint, or will rust like crazy
Recommended? Yes

Comments: I would get the poison spyder cover, cool spyder. Either way, can't lose with these.

Price: $80.00
Pros: Raw Iron
Cons: Raw Iron
Recommended? Yes

Comments: Good

Price: $100.00
Pros: cheap, cast iron, fill plug is higher allows for more fluid
Cons: none
Recommended? Yes

Comments: cheap, they work great, handle abuse, work with rubicons and allow for more oil

Price: $109.00
Pros: Great product from Riddler
Cons: None
Recommended? Yes

Comments: Great product and can withstand anything you can get into.

Price: $99.00
Pros: Extremely strong, smooth face slides off rocks, Grade 5 hardware
Cons: Reduced track bar clearance (in some vehicles).
Recommended? Yes

Comments: I installed the Riddler diff cover because the one I originally wanted (the $64 SOLID) cover was out of stock. I was looking for alternatives that didn't cost $170 like the ARB cover and this came up. I found at Jeepforum vendor for $99 shipped which was a great price. Another thing that compelled be to buy it: the Youtube review where it is destroyed using extremely heavy machinery.
The cover comes unpainted but coated in oil to prevent rust. Before installing, be sure to clean it thoroughly. I also heated mine up with a torch to evaporate any oils that had soaked into the porous cast iron. I painted it with Rustoleum Professional Enamel in a spray can and it is holding up nicely, even being dragged through dirt and bounced off rocks.

Other reviews mentioned weak stainless hardware breaking as you torqued the bolts down, but mine came with Grade 5 zinc-plated bolts which had no problems at all. I paired it with a Lubelocker gasket on my Dana 30 and it is 100% leak free.

To date, I have dragged it through rocky dirt in a really rutted area and bounced it off a rock, no problems, barely even scratched the paint.

I've read that TJs sometimes have clearance issues with the Riddler diff cover around the track bar at full stuff. No such issues on my WJ, both with the OEM track bar and with the JKS track bar. It also sticks a little further forward and comes close to the tie rod at full steering lock. However, there's still enough room to get your finger between it and the tie rod, and even more room with the JKS tie rod installed (smaller OD than stock).

Price: $110.00
Pros: Fits perfect and superior quality.
Cons: Little pricey but worth it.
Recommended? Yes

Comments: Very happy with the Riddler cover. Includes stainless bolts.

Price: $110.00
Pros: Smooth, very stout, looks killer
Cons: None
Recommended? Yes

Comments: Easy to see why this is a good upgrade. Like the new locking hardware that it comes with. I like the fact that you can leave it alone or paint it however you want.

Price: $100.00
Pros: Heavy, solid, well made.
Cons: Bolts that are included are soft. Do not torque to factory specs
Recommended? Yes

Comments: Heavy, solid, well made.
Bolts that are included are soft. Do not torque to factory specs.

Price: $100.00
Pros: Just watch the Rokmen test video. This thing is pretty darn strong. High fill hole helps with high pinion angle
Cons: None
Recommended? Yes

Comments: Very Nice!

Price: $110.00
Pros: Heavy and thick
Cons: None
Recommended? Yes

Comments: Great product. It adds strength to the housing as well as protection to your diff. Comes with new stainless hardware and gasket sealant. Ships bare steel.

Price: $109.00
Pros: Heavy duty! Raised fill hole.
Cons: Supplied bolts are cheap and WILL NOT withstand the torque requirements of a Lube Locker gasket without twisting off in your axle! DO NOT USE THEM!
Recommended? Yes

Comments: Attempted to use the diff guard with a lube locker reusable gasket which requires a first torque of 15 fp and a second of 32 fp. The first bolt I tried to apply 32 fp quickly twisted off in my axle!

Price: $50.00
Pros: Perfect fit, and it does what its supposed to do.
Cons: None
Recommended? Yes

Comments: I bought this product 2nd hand. It was a perfect fit and the powdercoating was perfect.

Price: $100.00
Pros: Tuff
Cons: Not as pretty as AEB's
Recommended? Yes

Comments: The do what they are supposed to do

Price: $100.00
Pros: They are simply GREAT!
Cons: None
Recommended? Yes

Comments: After going down the Rubicon, it was clear I needed better diff covers. The riddlers are really well made, and look great! Great product! E

Price: $99.00
Pros: Designed for JK Rubicon e-Lockers, recessed fasteners, good price
Cons: None
Recommended? Yes

Comments: I replaced the stock front and rear diff covers with these. Painted them with Rustoleum black bedliner and then painted the logos silver. I liked the fact that they had the flat area required to connect the wires for the OEM Rubicon electronic lockers. No problems so far.

Price: $110.00
Pros: Solid and thick and no lip. Cool looking. Doesn't come painted so you can do whatever you want easily.
Cons: Doesn't come painted so you have to do it yourself.
Recommended? Yes

Comments: Everything is fine except I wish it was painted already or powder coated, but thats just me. The only reason I didn't give this a 5 is because I kept breaking the hardware that is provided with the cover. I was using a torque wrench and going to 35 ft/lb., but then I gave up on that and went and got grade 8 hardware and still broke bolts at 30 ft/lbs, I eventually ended up with grade 8 hardware torqued to 25-30 ft/lbs. No problems yet.

Price: $109.00
Pros: Beefy, stainless hardware, looks
Cons: one bolt recess was a little close on the Rear 8.25 and made for a tight fit with socket but I'm being nit picky. They don't give you enough silicone to seal the rear so you have to buy a bigger tube....it's just enough to do the D30 cover and that is pushing it.
Recommended? Yes

Comments: Great looking covers that fit perfect and seal up nicely. Paint mine with black semigloss and they look fantastic. NOTHING to hang up one and sealed perfectly the first time!!

I paid cost and couldn't believe how much of a mark up there is for retail customers.

Price: $100.00
Pros: Very Solid
Cons: None
Recommended? Yes

Comments:

Price: $50.00
Pros: its works great
Cons: I cant think of any
Recommended? Yes

Comments: This has saved my fron diff many times