PIVOTRAX 90/90-21 or 80/100-21 (3.00 X 21) Heavy Duty Motorcycle Tube - 3mm Thick - TR4

Put on Suzuki savage front was impressed with thickness made spooning tire easer due to not pinching. They also include a valve stem removal cap. I would buy again if needed.

Seems to be quality product

I used it for my motorcycle bike. It was easy to install it looks great. Thank you

As good as any tube you can buy. Course rubber dry rots but these are fresh... I want all the protec i can get from hitting the asphalt in point 1 seconds.

Nice tube

I have purchased these twice to use on my 2017 BMW F800 GS. First, these are great tubes. Ive pinched one before and it only left a small indent on the tube, it didnt actually tear a hole in the tube. As far as durability, they are almost pinch-proof and they can take a beating. Very thick, very durable rubber. Easy to install. I find that being thicket, the tubes are more rigid and this makes it much easier to take on and off and gives peace of mind. Im always worried Im gunna tear the tube when I remove a standard tube (like the Michellin tubes... nice tubes but fragile). The rigidity of the Pivotrax also makes it easier to get the valve thru the hold and also helps prevent it from pinching when spooning a tire on. They also hold up well off road when aired down. I really like these tubes for off road and think they are ideal for riding in the dirt for things like the TAT or BDR trips. However, I really hate using them on my F800 GS. I also commute on my bike and have friends with cruisers and street bikes, so Im joining them on the pavement alot. These tubes are HEAVY and they are a HUGE PAIN to balance. Ive purchased 2 of these tubes and used them on 4 different tires... with these tubes installed Ive only been able to get my wheel balanced once, and even then Im not sure how to do it. Ive tried 9 different times to balance a wheel with these tubes installed and they just wont balance. When theyre off balance, the front wheel hops at a certain speed range. Usually with these tubes you can feel the off-balance hops from 20mph to ~50 mph. First tube I got I installed it in a Shinko 705. Awful off-balance hops at normal cruising speeds that stabilized and rode smooth at 70mph. Changed to a TKC80 tire with this tube. Still couldnt balance. Changed to a Heidenau K60 with this tube. Still couldnt balance. Use the Heidenau K60 tire and swapped out the Pivotrax for a Michellin tube, balanced perfectly. 6 months later I get a flat due to the Michellin tube getting punctured. I swap in the Pivotrax tube. Couldnt get it to balance. Swaped to a Bridgestone tube, balanced up perfectly. Few months later had to change tires. Installed a Shinko 705 with this tube again. Wouldnt balance. Change Pivotrax for Bridgestone tube. Balanced up nice and rides smooth. Then came another tire change. I got another Shinko 705 and tried this tube again. This time, it sort of balanced. It was balanced better than before, but not perfect. Still had a slight hop from 20-45mph but less noticeable, but also had noticeable balancing instability at speeds over 80mph. However, this Shinko I put on started showing some problems with the tread falling apart, so I just swapped it for another Heidenau K60 a week ago and installed this Pivotrax tube. Couldnt get it to balance at all. So, a few days ago I pulled the Pivotrax tube out and installed a new Michellin tube and voila, wheel is perfectly balanced and rides smooth as glass. I really want to like these tubes, they just really dont work well on an ADV bike unfortunately unless youre riding 100% off road where slightly imperfect wheel balance isnt as critical as it is when youre cruising at 75mph on the interstate. One of these days when I get a CRF or DRZ Ill probably use these exclusively since theyre great off road.

Great value and so far holding up well to the abuse with lower tire pressures.

Excellent quality. Nice and thick. Fit my stock 1999 Triumph Thunderbird front tyre perfect!

I bought this tube and installed it, will honestly say its the thickest tube Ive ever attempted to run. Installed it and everything was great. Took the bike out for a rip down the dirt and felt accomplished as any person would after putting a tube in. Got back and threw the kickstand down then walked away. Started working on another bike and heard a short brief hissing noise. Went back to the bike and the tire was flat yet again. Removed and found a pin hole next to the valve stem. Had to pull a tube from a different bike and its been fine ever sence

Appears to be high quality, not yet installed.