INJORA Front&Rear Axles Set - +4mm Extended Aluminum Complete Axles for TRX4M Upgrade 1/18 RC Crawler Car
Condition: New
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Availability:
In Stock.
Arrives
Wednesday, Apr 29
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Size: Front&Rear
Features
- [Well Performance] CNC machined and black anodized, excellent workmanship and high precision.
- [Unique design] +4mm axles increase the width of each side by 4mm, increase total length by 8 mm. 4mm extended desgin provides better stability and climbing performance.
- [Upgrade Accessories] Come with Hardened CVD shafts, steel 12/24T gears, 5mm(+1mm) brass wheel hexes and nuts.
- [Pre Assembly] Pre-assembled make installation more simpler, coming with all hardware for the axles.
- [Wide Application] Designed specifically for TRX4M Bronco Defender K10 High Trai 1/18 RC crawler. Note:As the axle housings are extended, so they are not compatible with original TRX4M size steering links and dogbone shafts.
Product Dimensions: 5.12 x 3.15 x 1.57 inches
Item Weight: 5 ounces
Item model number: 4M-61FR
Manufacturer recommended age: 0 - 12 years
Manufacturer: INJORA
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Apr 29
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: Front&Rear
Solid quality axles. Great turning radius and quality materials. Fit the trx4m perfectly, but you may want to trim the body clip/bumper mount for a little more clearance for the servo.
Reviewed in the United States on December 22, 2025 by Brian Bowman Brian Bowman
Size: Front&Rear
They seem to be a good quality set of axles. They added a decent amount of weight to my high trail f150. I wish they had come with some instructions as this was my first time replacing axles and it took me a little bit to figure out why I had a bunch of o-rings. They also come with extra hardware which is nice but it had me looking around for a minute trying to make sure I wasn’t missing something. They also came with a set of 4 set screws and I still have no clue why they are included.
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Reviewed in the United States on November 16, 2025 by Garrett D. Garrett D.
Size: Front&Rear
Love these axles, didn't extend track width enough to look goofy, installed on a trx4m k10 high trail
Reviewed in the United States on January 3, 2026 by Christian the real reviewer
Size: Front&Rear
So far no issues gears have a little play but as far as I’m aware it’s the same gearing as the stock ones so new gears should fix it
Reviewed in the United States on December 10, 2025 by Barrett Sterling Barrett Sterling
Size: Front&Rear
Nice axles. I broke a font stub shaft bashing the 4mt, but oem parts fit the knuckle.
Reviewed in the United States on March 24, 2025 by Ahammer27
Size: Front&Rear
I usually use the portals but have a couple of my build with these axles very nice looking high quality and fit is spot on
Reviewed in the United States on August 13, 2025 by Cartoon14
Size: Front&Rear
Have been happy with them
Reviewed in the United States on December 15, 2025 by drayden
Size: Front&Rear
I grenaded a set of Injora gears in my stock rear diff over the weekend. (I suspect that was my fault. 😁) So, I seized the opportunity for an upgrade. The axles were delivered on time. The fit and finish is good. The Injora brass front diff cover, c-hubs, and steering knuckles I already had fit the new front axle perfectly. A couple of things worth noting. I had to put one of the included shims in each axle behind the pinion, to get the gear mesh just right. There's also not nearly enough grease in either axle. I think they put enough grease to keep them clean for shipping. Once the mesh is set and they're greased up, they run smooth with no binding, even at full steering lock. The steering angle is also good.
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Reviewed in the United States on June 11, 2025 by Joe Gunn RC Joe Gunn RC