After just a few months of recreational riding, the hub in my rear wheel stripped while in the river bottom in the backcountry leaving me a very heavy bike to push, uphill to where I could drive to pick it up. Although the hub was covered by warranty, it was recommended that I upgrade the unit to avoid a similar result. The upgrade, delivery and installation at a local bike shop has now cost me nearly $500. I really love my bike but I am now gun shy about taking it into the backcountry for fear of what else has been under-spec’d on the components of my bike. In fairness, the folks at Biktrix were responsive to my inquiries but I just wish it wasn’t required.

After 7800 miles my original hub finally stripped out from years of rough desert trails. I was excited to find out that Biktrix had a much superior rear hub for replacement. I ordered the hub, with new spokes and new rim, all put together by Biktrix for a great price. The new Ratchet hub sounds and performs great. Now I am back climbing mountain trails again.

The star ratchet itself is excellent. Engagement is solid, reliable, and clearly suited for the torque demands of an e-bike. Before this upgrade, I experienced three breakdowns across two different bikes, all related to the original hub. Since installing the star ratchet, those issues have been resolved. My only comment is about how it’s positioned. This level of reliability should be standard. I would much rather see the bike priced slightly higher and come equipped with a hub that can handle the load from the start, instead of needing this as an upgrade afterward.
The star ratchet works perfectly it just shouldn’t be optional on a Juggernaut Ultra FS Pro 3.

As many know by now, Sondors LX hubs are…less then optimal. Mine failed at 768 miles. The Wren ratchet hub is well reviewed and I’m aware of other Sondors installations so I purchased one.
Not being an avid biker I wasn’t aware of all the axle permutations but eventually concluded I could reuse the Sondors LX axle if I turned down the 14mm center section to the 12mm diameter of the ends. Worked perfectly, I’m back on my bike with confidence that my hub problems are past.

I have a Juggernaut Ultra FS Pro 3 and mainly use it off road. I should have upgraded to the Wren Star Ratchet Rear Hub right when I bought it but I didn’t. After a year off road riding I stripped the standard hub. The guys at Biktrix were awesome at getting me fixed up with a new rim with the Wren Hub laced into it. Had me back in operation in just over a week including shipping awesome job guys! The Wren Hub is a must have in my eyes for this bike especially if you use it off road like I do. Much, much stronger hub! 👍

no discount given at all even though I only had the bike 6 months. Plus the spokes have to all be changed, hard time finding spokes that fit.

Get one when you order your bike, the 1,000 Watt motor will wear out the original one in about 600 miles or so, and this may depend on the type of riding you do. I ride off road up and down mountains. They got me a new hub and wheel in about a week. Thanks bike people for getting the parts that I need to the USA, asap. 😊✌️🤙

The hub is built well but the spokes and nipples that are supplied don’t work with the wheel they sent on the bike. Spokes were also wrong diameter and the nipples didn’t match the spokes. Every time I order from biktrix I have issues. I wouldn’t have ordered from them if it wasn’t for there odd spoked wheel. I would not recommend biktrix but the wren hub is built well.

I got my wheel with the new hub in a very short time and I was very happy about that. Works great, sounds good. My issue was I didn't receive the QR skewer to mount it. Roshan says any wheelset you buy will not come with skewers Customer Service says they should have sent one and just forgot. However they did send me one, took about 5 days to get it, that was partially on FedX.
If you get one of these hubs specify if you need a skewer. My bike was originally a bolt on so I never had one. Other than that I like the upgraded wheel and as always love my bike, it's been a good one.

So far the Wren Ratcheting freehub seems rock solid. If I had known the standard freehub would fail, I would’ve ordered it as an upgrade when I ordered my Jugg Ultra Duo.

The package came quick AFTER they dropped the ball not seeing my order was placed AND paid . The hub looks good except for a small nick in the flange where the spokes install. Time will tell on the operational experience ; it sounds smooth as silk.

Received my new rear hub and first thing I noticed was it appeared to be a far superior hub than the original rear hub that comes on the bike. Installs was a bit challenging as there were a couple extra parts (I come to realize they were different size spacers) and no directions as to what they were for. But after figuring it out and changing to the proper spacer it went together easily. Been back riding for over a week now and definitely rides smother and fixed my grinding issue from the bad hub I had. Thanks to the team for getting the part out to me quickly, so I had minimal down time.

If you need a 36 hole 197 hub, this or the $500 onyx hub are your only options. This hub with a 12x230 mm available on Amazon will adapt your super73 rx for a mid drive. My only criticism would be that it came packaged in a plastic bag with no documentation.

Blew out my original hub. Got the Wren star ratchet hub. Had a good bike shop install it with new spokes and a new tire set to boot. The mechanic commented on the quality of the hub and said I’ll probably never have another blow out. I was nervous about the fit but Biktrix had me send photos and measurements and everything fit fine.

Wren hubs are the way to go with powerful e-bikes.

I’m in my 5th year riding my Ultra. I have broken by stock hub by Oliver stressing it. The prawns can’t take my power and the 1,000 watt motors after a few hundred hard claims. So for peace of mind I bought the WREN. Now I think it’s in breakable. They have 20 teeth where the stick buns have 6 prawns. If you are a hill climber I think you should consider it.

200 Amps down low, this Wren Kit is Fn crazy strong ...

Would you believe I am still struggling to have this rear hub installed on my Juggernaut fs 1000? This upgraded rear hub you suggested is a night mare. Very expensive. Spokes have to be replaced. Very expensive to replace. No guarantee it will work. I don't understand why I was put in this situation. When my ebike was under warranty this part was replaced for the original and easy to replace. Not this part. Very disappointed!!

Excellent. I had a local Bike Shop Owner I've known for years restring rear wheel with you Wren Hub. I have literally torn to shreds 3 different high end sram HD Hubs and again after rebuild etc. This hub really pull alot more than it's own weight. I've applied up to 5000W or roughly 6 horse power in 6th gear that's about a 12/36/44 tooth ratio...bottom line 150lb bike 210 pound rider up to 55 miles an hr short burst and 40 mph steady and consistent reliable transport. Thanks for a great HUB. 👍 worth every cent...

I hooked this up to a POWERFUL mid-drive. ZERO issues. Im running a CYC X1 PRO GEN 2 Kit. 72v 5000W. This hub handles it.

LX was shreading hubs. 3 bearing failures in original and 2 replacement hubs. LX’s 160Nm Mid Drive motor was too much for cheap Chinese hub to handle. Ratchet hub solved that problem. Got my bike back again!!!

I haven’t tried it yet

Have had to replace original 6 pawl Quanta hub on my Jugg FS, so thought the Wren would last the life of the bike. Shortly after receiving it I noticed your accessory page show an upgraded version for $49 more, but not available. What was the improvement? Also saw video on Biktrix brand hub being designed and built. What will it sell for? Different from Wren?

Great for to replace the OEM unit. Warranty service was excellent