Hot Racing Sealed Aluminum Differential Case for Traxxas 2WD
About this part
This is an optional Hot Racing Sealed Aluminum Differential Case for the Traxxas 2WD line of Stampede, Rustler, Bandit, 2WD Slash, and Monster Jam vehicles. This Hot Racing sealed differential case features a machined aluminum differential with a hardened steel main differential gear.
Features:
- CNC machined aluminum differential case
- Hardened steel main differential gear
- Sealed differentials allows you to tune to current track conditions by changing the weight of the diff. oil
- Four O-Rings help seal against fluid leakage which results in a very smooth differential that improves the performance of your vehicle
Outdrive o-rings: 8x5x1.5mm
Case seal o-rings: 29x27x1mm
Includes:
- (1) aluminum differential case (2 halves)
- (1) steel main gear
- (1) o-ring and hardware pack
- Filling differential fluid and assembling the diff case with stock Traxxas differential gear
- Recommended to use a removable-type locking adhesive (medium loctite) on screws threading into metal
Notes:
- Replacement o-rings are Hot Racing HRARTE38CH
- Is NOT compatible with Hot Racing HRATE125 Differential Locker Spool
Reviews4.0 · 5 reviews
This was one of the better upgrades for the slash. To prevent leaking, build it using protek orang grease or associated green slime. I use 20k oil and the truck feels great. I use this in a lcg slash with a 3600kv castle motor.
Use Green Slime lubricant on the O-ring seals or you will lose fluid! I didn’t do this the first time and I lost fluid within 2 weeks vs. the Traxxas OE differential case which took about a month. I use 500k to one million weight differential fluid for my drag cars. After using the Green Slime, I used the drag car for about 3 more weeks before I put the car away for the season. When I did an overhaul inspection I still had fluid in it.
I didn’t use grease but used 100k Fluid. Leaked a little and needed top up but diff casing is solid.
Works awesome! I threw 500k diff fluid in it and no leaks!
I bought this differential because of all the good reviews and I wanted tunability. Problem is you silicone oil will leak out around the o-rings on the shafts. Does not seal like advertised. I suppose if all your going to use is black grease it will work. Now I'm saving my money for either the magnum 272r, or the drc transmission both have bevel cut gears which is better than planetary anyway. 1 star because unlike these guys who must have reviewed it before they ran it I waited till after I ran mine to review. Not a good product!!!
Reviewers generally find the sealed aluminum case solid and a worthwhile upgrade for Traxxas 2WD trucks, with most praising its build and performance. Leaking around the O-ring seals is the main recurring issue, and reviewers disagree on the cause. Several say that applying Green Slime or Protek Orange grease to the O-rings before filling prevents leaks, and one reports fluid loss within two weeks until the seals were treated. A reviewer using 500k fluid reported no leaks, while another using 100k fluid reported minor leakage requiring a top-up. The one-star review states that silicone oil leaked around the shaft O-rings and that the case only sealed with black grease. Reviews reference the Traxxas 2WD variant.
- + Solid, well-built aluminum case
- + Worthwhile upgrade for Traxxas 2WD
- + Good performance with silicone oil in some reports
- + No leaks reported with 500k fluid by one owner
- − O-rings leak silicone fluid unless treated
- − Needs Green Slime or grease on seals
- − Minor leaks needing top-up with 100k fluid
- − One owner found it did not seal as advertised