Looks can be deceiving... :wink:

People have been using the LST2/ MUGGY/ Aftershock diffs & their alloy cases as an upgrade for standard maxx and even revo diffs- equal to UE stuff pretty much only vastly cheaper.

What about for the savage and flux?

Nobody that I know of runs them in a Savvy, but I have Muggy diffs with the LST aluminum cases in my Muggy and they are bullet-proof. The LST XXLs have aluminum diff cups as well as the cases but my Muggy with the plastic cups has been exceptionally durable. When it comes to stock diffs, you'll be hard-pressed to find ones tougher than these Losi diffs and they can be had on eBay for $20 or less.

Also, I can see the case being better but the gears still look exactly the same unless they are machined instead of cast.

From what I have researched, if they were as strong or better than the CEN gears, I think most guys would be using those as the upgrade instead of the CEN ones.

I was reading on a big Savage site a while back about people using all sorts of truggy and other 1/8 diffs in their Savs w/o a whole lot of luck. It seems like there is some inherent weakness in the case design that allows otherwise strong gears to strip more easily. The flux does have "HD" cases, but IDK if it makes a difference. It could be the Losis are so good as they are already in their own cases. Losi is likely SAE bearings and won't work w/ metric housings.

Geez....now ya tell me.

I do like how the Losi diffs have their own cases, and I do believe that this contributes to the durability at least in some way (less prone to deforming under load or impact). The Losi bearings are Metric (8x16, I think). The bearings I have for my Hyper 7s fit on the pinion shaft and in the diff housing so unless there is a SAE size that is the same exact size as those bearings they are metric. The only SAE I know of on my Muggy is some 4-40 screws in places where the extra strength is needed (4-40 has a better thread than 3mm metric).

this is pissing me right off. the back diff on my flux, is NOT the bulletprof diff that it says comes with the flux, and the internal Bigget gear, that sits in a spinning PIN, keeps on breaking, the gear is on the right hand side,( the side without the ring gear). and the bottom of the gear just shreds, the pin breaks in 3. and I HAVE NOT DONE DONUTS, OR UNLOADED THE DIFFS IN ANY WAY POSSIBLE!!

No where do they say the Flux comes with the bulletproof diffs. The new diffs are an upgrade to the stock ones.
Its not "donuts" that kills diffs, its typically standing backflips (even though they show them on their promo vid).

@Jtiessen, I've read that the newest Fluxes would be coming with the new bulletproof diffs, also makes sense to me since that way HPI doesn't have that many complaints anymore. Besides now they often send the bulletproof diffs for free so it will cost them double (old and new ones + shipping). Altough off course first all the 'old' Fluxes need to be sold before the new ones will be sold.

Has anybody who is running the new bullet proof flux diffs managed to break them yet? I was blowing through diffs before upgrading and have not had any problems since the upgrade.