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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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Description
ball differential vs gear differential Reflex Racing: RX538 Aluminum Gear DifferentialReflex Racing's all new Gear differential was designed to be a high quality and high performance addition to your 1 28 scale car. More rotation and harder acceleration than the ball differential yields a car that is often about a tenth faster to drive in high traction surfaces. The feel of this gear diff is very balanced and this makes the acceleration super smooth and strong. At only about 4. 7g, it is also super light for less rotational mass. The
Reflex Racing's all new Gear differential was designed to be a high quality and high performance addition to your 1/28 scale car. More rotation and harder acceleration than the ball differential yields a car that is often about a tenth faster to drive in high traction surfaces. The feel of this gear diff is very balanced and this makes the acceleration super smooth and strong. At only about 4.7g, it is also super light for less rotational mass.
The gear diff is sealed from the elements as the gears are inside a machined aluminum case in which you can larger amounts of grease to change the behavior of the differential action. The ticker the grease, the lower response into the corner, but this could be at the expense of a little bit of exit traction. Reflex does not recommend going too heavy on the oil (maybe use no more than 1 or 2k CST oil), but you can use oil with no leakage at the spur and only slight leaking at the outputs.
Note: the diff is not sealed at the bearings, so it is not designed to be "filled" with oil , but a healthy amount can be used when building. Left hub is not included.
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
4.8 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Very comfortable
Size: 14, Color: Light Green
I received so many compliments on my son’s outfit for graduation.
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Reviewed in the United States on June 26, 2025
★★★★★ 1
no pure white.
no pure white.
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Reviewed in the United States on February 4, 2026
★★★★★ 5
suit
Size: 12, Color: Beige
Very nice suit set. size 12. seems to fit as expected. I love the quality. It does have multi colored thread, as it is not solid.
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Reviewed in the United States on June 21, 2025
★★★★★ 5
Perfect fit and nice material
Color: Blue, Size: Small
This is a really nice addition to my teen son's wardrobe because the cloth is great quality and it fits him perfectly. It looks good on him and holds up well, making it a very solid purchase for a teenager. We initially ordered the wrong size, but the exchange process was quick and prompt.
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Great purchase. Waist is a little big but it will work well.
Color: Light Brown, Size: Small, Color: Light Brown, Size: Small
Super fast one day shipping. The quality is good and the fit is good. He is 5 foot 11 and his waist is 30 inches. He has long arms and the jacket lands perfectly at his wrist. The pants were a little large in the waist and the length is a little long.
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Reviewed in the United States on May 24, 2026