4-Pack HobbyPark RC Wheel Spacers 12mm Hex Drive Hubs Combiner Coupler Aluminum 25mm Offset Extension for 1/10 RC Crawler Car Parts (Blue)

So far so great 25mm got me out about an inch and seems to help a lot for cement pavement driving with it being just a tad bit harder to tip with all the grip i have. They did require some modification though. The hub extenders come with and require a thicker axle hub pin so if have standard 12mm hubs you will have to drill that slowly and straight ! To be sure you are just the right size for bigger pin and not to big at all, a nice, barley fit , snug fit is what you want . I also had to drill the wheels mounting lug out for the size of the screw on nut ! This is super easy as well. Same ordeal nice and slow . Stay centered and as straight as possible and work your way up to size needed for a nice tight fit. Took about 15 min. With not a very good choice of tools at hand . I used a 9 dollar Dremel tool and thats what took me so long , but got the job done and further pushed me to go slow no matter what which gave me plenty of time to ensure straightness and size was tight and correct. Other then that they work and are super nice !

These are really an unexpected upgrade that I’m surprised isn’t more widely advertised. They keep our Traxxas Stampede(s) (2wd and 4x4) much more stable and now they dont tip over in higher speed turns as often as before. There is a little washer up against the hub that needs to be removed for the adapter to set flush against the hub, then the fit is perfect. Kid tested for a few days and no issues yet. I don’t write many reviews, but thought these needed some props.

Should have read it more closely. The 12 mm hex hub fits the tire, but your tire rim needs a 5.5 mm axle hole. The bolt is M4 which fits the axle for the vehicle.Well, if you have plastic rims that fit 1/10 cars, these axle holes are 4 mm (that is why you use a 4 mm nut to secure your tire) - you either have to ream out a new hole or drill.

Hobby park has a great selection of quality parts with on time delivery. I use the hub extensions on my smaller scale trucks for wheel choices and have purchased several sets

Although these do work I do not understand why these companies are insistent on using 8 mm or larger diameter bolts. The standard for RC is 7 mm, 90% of RC Wheels are manufactured to house a 7 mm wheel bolt. So if you do buy these you have to 100% make sure that a 8 mm will fit into the new rim. And it's very easy solution that the manufacturer simply use a 7 mm bolt. You can have a 8 mm base to the bolt but you need it to be small enough to actually get tools in to install and remove the bolt from the wheels.So if anyone is looking at these make sure that you have rims that will accommodate an 8 mm bolt.

Excellent product, does exactly what is described. Fits perfectly on my Redcat Gen 7 Pro. Very simple install, takes 2 seconds. Only “con” and this has absolutely nothing to do with the seller is your steering radius gets ruined so be aware you’re gonna need a stronger steering servo if you want to make tight turns. That’s just the name of the game when you want a wide stance LOL. Thank you very much HobbyPark for the excellent product. I couldn’t be happier with how it turned out.

The machining is garbage on these. I’ve purchased other HobbyPark products and there is usually a little finagling involved, but these are terrible. Also the insert that screws to the axle threads is too short and barely grabs any threads. The entire purpose of this is to utilize wheels with shallow offsets and the fact that this is an issue seems like a gross oversight or skimping out on material costs.

I’m running them on my 1/10 slash and they are awesome. I run fast and they help not flip over. Haven’t had any problems.

thet extenmd your wheels