INJORA 24T/12T 6g Alloy Steel Helical Gear Set for 1/18 TRX4M Front Rear Axles(2PCS)

Really good gears! I love Injora!

Please read my entire review: Quality of these things is crazy for the price. The gears seem to be hardened as well from what I can tell, gear mesh is pretty decent and no binding! Love that these are helical gears similar to real trucks. **As the title states, theses are not compatible with the stock bushings. The differential shoulders are knurled to grip onto the inner race of the bearing kits. Obviously if you decide to run the bushing and go against my advice you will end up with either severe binding or badly worn differential carrier bushings. Buy any bearing kit with this purchase. Some modification is required** So now the pinion bearing fit is extremely tight and you will not be able to slide the pinion down onto the bearings as intended. To remedy this I chucked the tip of the pinion gears. Onto my drill gently and with a tiny sliver of 800 grit sand paper, spun/sanded the shaft/ bearing fit down so to resolve this issue. At medium speed with 800 grit this took less than 1 minute of sanding/spinning and voila. Done. I had fast eddy bearings, results may vary.

Used these to swap out the plastic gears, much stronger and smoother. Recommend to put a little grease in the different to help with noise and help them last longer

Everything worked as described. I changed the gear ratio and was striping gears like butter. Swapped out to these bad boys and this thing feels unstoppable now. Showed up at my door on time as well.

Good but missing grease packet

As usual Its very good

Not made right they where to small for the axials they are all wrong they where grinbing I would not recommend this they seemed not to fit my stock axial let alone the aftermarket ones from you. So my recommendation would don't buy .

Eventually got them to fit in fasteddy bearing by sanding the shafts down a bit. Hopefully they fix for overdrive gears as I would like to order some.

Todo encaja a la perfección y se nota, los que vienen de serie en traxxas trxm son malos y se rompen los dientes. Después de un tiempo sigo con los Injora y están perfectos .

Perfect replacement to get my trx4m back up and running

Passgenauigkeit und Funktion einwandfrei. Klare Kaufempfehlung.

Parfait

Quick and easy upgrade. I've done these on two TRX4M's now to replace failed plastic spur gears. These should have been factory fit in my opinion as the plastic spur's die quickly. Slight noise reduction was noted. Don't forget to add a bit of grease!