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Description
ARRMA Assembled Centre Diff Set Kraton 8S BLX ARA310938The ARRMA Assembled Centre Diff Set ARA310938 is a pre built replacement differential assembly designed for compatible ARRMA Kraton 8S BLX RC vehicles requiring drivetrain servicing or repair. Features Factory Assembled Unit: Pre built and filled with 1M cSt silicone oil for efficient installation and servicing Steel Internal Gears: Tough gear construction designed for long lasting durability in demanding RC conditions Machined Aluminium Diff Case:
The ARRMA Assembled Centre Diff Set ARA310938 is a pre-built replacement differential assembly designed for compatible ARRMA Kraton 8S BLX RC vehicles requiring drivetrain servicing or repair.
Features
- Factory Assembled Unit: Pre-built and filled with 1M cSt silicone oil for efficient installation and servicing
- Steel Internal Gears: Tough gear construction designed for long-lasting durability in demanding RC conditions
- Machined Aluminium Diff Case: Precision aluminium case combined with strong steel diff caps for increased strength
- 53T Steel Centre Diff Gear: Designed to handle high-load drivetrain applications
- Steel Cross Shafts And Inserts: Provides reliable fitment and efficient differential operation
- Bearings Included: Supplied with bearings for faster installation into compatible vehicles
Specifications
- Brand: ARRMA
- Part Number: ARA310938
- Manufacturer Reference: 310938
- Product Type: Assembled centre differential set
- Compatibility: ARRMA Kraton 8S BLX
- Centre Diff Gear: 53T steel gear
- Diff Oil: 1M cSt silicone oil
- Diff Case Material: Machined aluminium
- Internal Gear Material: Steel
- Application: RC drivetrain replacement and maintenance component
Includes
- 1 x ARRMA Assembled Centre Diff Set ARA310938
- Installed bearings
FAQ
What vehicle does the ARRMA ARA310938 centre diff fit? The ARRMA ARA310938 assembled centre differential is designed for compatible ARRMA Kraton 8S BLX RC vehicles.
Does the ARRMA ARA310938 centre diff come assembled? Yes. This centre differential is factory assembled and supplied filled with 1M cSt silicone oil for easier servicing.
What tooth count is the centre diff gear? The ARRMA ARA310938 differential assembly includes a 53T steel centre diff gear.
Important Notes
- Check your ARRMA vehicle manual to confirm ARA310938 compatibility before installation
- Additional drivetrain components and mounting hardware are not included unless supplied separately
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 2416 reviews
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Product Reviews
★★★★★ 5
Soft, true-fit briefs — great daily comfort, not ideal for workouts
Color: Black, Size: Large
I’ve been wearing these wirarpa modal briefs every day for about a month, and they’ve quickly become my go-to pair for daily wear. I previously owned the same brand’s boxer briefs for over a year, which held up better than any other brand I’ve tried, so I decided to test the brief version this time.
Fit and Comfort
The sizing was spot-on for me. The waistband is soft, not scratchy, and doesn’t dig in — it stays in place without rolling. The leg openings don’t ride up, and everything stays comfortably supported without tight seams in the wrong spots. I’d almost forgotten how briefs feel after years of wearing boxer briefs, but these reminded me why they’re still worth owning.
Fabric and Wearability
The modal material is silky and smooth to the touch. It’s perfect for everyday comfort and casual wear, but not the best choice for sports — it’s not highly moisture-wicking, so I wouldn’t use them for workouts or hot outdoor work.
Durability
After a month of daily washing, there’s no pilling, stretching, or loose stitching at all. If they hold up like my year-old wirarpa boxer briefs, I expect these to last far longer than most big-name brands.
Design Notes
These come neatly rolled in a sealed bag with no odor or chemical smell — a nice touch that shows some quality control.
Bottom Line
If you like a soft, lightweight brief that fits true to size and stays comfortable all day, these are a great value. Go for the boxer briefs if you want more coverage or plan to sweat in them, but for regular daily wear, these hit the mark perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2025
★★★★★ 5
Soft, lightweight, and comfortable
Color: Black,navy,burgundy,brown, Size: Medium
These briefs are soft, lightweight, and very comfortable for everyday wear. The modal microfiber material has a nice silky feel, and they provide plenty of room without feeling bulky. The fit is true to size, which is always a plus when ordering underwear online. Overall, a comfortable and well-made option if you want something soft and easy to wear all day.
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Reviewed in the United States on March 24, 2026
★★★★★ 4
Comfortable and soft
Color: Black, Size: Small
I purchased these in small. I have a 30-inch waist, and the small is loose on me. They are described as handmade, and to expect some variance, but there is a noticeable difference between individual items. Individually, they are well constructed, just inconsistent in size.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Just buy them
Color: Black,navy,burgundy,brown, Size: Small
Used to wear sliders all the time, figured i'd switch it up. These are super comfortable, probably the best material underwear I own. Great to just lounge around it or wear everyday. Fit is really good, I got a small and about 29-30" waist. Good bang for your buck too. I've washed them a handful of times and they hold up great, fit great and dont' shrink.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Good underwear. Husband likes them.
Color: Black, Size: Large
Husband wears XL and XL fit well. This is the second pack I got for him. They are decent quality, look and feel nice, not baggy yet not too tight anywhere. They are somewhat thin (but still supportive) and do not make him sweat more so he loves that. No problems washing (they didn’t shrink). Will continue to repurchase these.
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Reviewed in the United States on May 11, 2026