RC 15MM Extension Adaptor Wheel HEX Hub 12MM Upgrade Length for Traxxas Trx4 TRX-4 Upgrade Accessories (Black)

Perfect fit for 2.2 tires

Does what it supposed to do great fitment

the extensions fit perfectly on my trx4 sport how every 2 of the 4 screw pins that were included were so full of either paint or warped some i could not get any allen wrench into... so you might need to get an extra set of the pins just in case... If it wasnt for the pin issues i would of given all 5 stars

They work like you want them too, if you want a huge description on how they function JUST BUY THEM!!

The biggest part of these things is, they're not made well. the barrel nuts that goes through the hex. Don't line up correctly and make them tight and they strip very easy. I truly believe that they should have never been produced as low quality as they are.

The RC 15MM Extension Adaptor initially appeared to be well-designed and constructed. The material seemed durable, and the extension itself promised to provide the added length I needed for my specific application. Installation was relatively straightforward, and initially, I was impressed by the increased range of motion it provided to my RC vehicle.However, my enthusiasm quickly turned to disappointment when I attempted to remove the adaptor for maintenance purposes. The grub screw, which secures the adaptor in place, stripped upon attempting to unscrew it. Despite using the appropriate tools and following the manufacturer's instructions carefully, the grub screw simply wouldn't budge without damaging it irreparably.This issue with the grub screw stripping upon removal is a significant flaw in the design and manufacturing of the RC 15MM Extension Adaptor. Not only did it make maintenance and adjustments exceedingly difficult, but it also rendered the adaptor essentially unusable once installed.Adding to the frustration, when attempting to remove the adaptors from the axle stubs, they had to be drilled out due to the inability to dislodge the stripped grub screw. This not only further complicated the maintenance process but also risked damaging other components of my RC vehicle.Furthermore, the lack of durability exhibited by the grub screw reflects poorly on the overall quality of the product. For hobbyists like myself who rely on precision and reliability in their RC equipment, such shortcomings are highly problematic and diminish the value of the product.In conclusion, while the RC 15MM Extension Adaptor initially showed promise in extending the reach of my RC vehicle, its design flaw regarding the stripping grub screw severely undermines its usability and overall quality. I would caution potential buyers to consider this issue before investing in this product, as it may ultimately lead to frustration and disappointment.

Enables you to use bigger tires.

Fit is fine but the nut even with the washer seams to back off and needs re tightening a lot