As an Amazon Associate I earn from qualifying purchases.
1. AR-PRO #ad
Thick Premium Rubber, 2.75/3.00-21” Replacement Inner Tube 80/100-21300/325-21 with TR4 Staight Valve Stem, Fits Motorcycle with 21'' Tires 2-Pack, Made From Heavy Duty #adAR-PRO #ad
- No special tool installation: in less than 5 minutes, you’ll be back on the trail or track! Replace the inner tube quick – so simple, easy and fast! Safe in any season or weather condition.
Guaranteed proper fit: our inner tubes fit 2. 75/3. 00-21 front wheel as well as 90/80 - 21, 90/90 - 21, 100/80 - 21. The perfect replacements: ar-pro offers the perfect replacement for vehicle with 21” tires that are between 2.
75'' to 3. 00'' wide inner tubes for less cost from the OEM Yet Is Made From High-Grade, Heavy Duty Premium Rubber. Safety first is our motto: we designed this inner tube to be explosion proof.
Now that’s comfortable. Adds comfort to your ride: with thick butyl rubber that absorbs shocks, you won’t feel the bumps and hollows because your bike will glide along, protecting you from the force. When and if punctured, it immediately creates an airtight seal to prevent damage, destruction and injury to the rider.
2. LotFancy #ad
80/100-21, 80/100-21 Inner Tube Replacement with TR4 Straight Valve Stem Fit: 90/80-21, 2.75/3.00-21 Inner Tube Fit Off Road Motorcycle with 21'' Tires, 90/90-21 #adLotFancy #ad
- After-sales service: before installing, they are already damaged. Great performance: the inner tubes are double thick, more durable. When and if punctured, it immediately creates an airtight seal to prevent damage, destruction and injury to the rider.
Safety first: we designed this inner tube to be explosion proof. Please check the position of the valve, and make sure you install them in the right direction.
Please contact us, if there are any bubbles, check to see if the inner tubes are completely sealed by putting them in water, we will provide 100% refund or Free replacement to you soon.
Easy to install: the replacement inner tire is extremely convenient and simple to install and detach. Improved version thicker rubber tubes which are tear-resistant, scratch-resistant and durable in use. Compatibility: 2. 75/3. 00-21 inner tube fits motorcycle with 21'' tires, great 80/100-21 Replacement Inner Tube With TR4 Straight Valve Stem.
3. HIAORS #ad
100/80-21 Thumpster Atomik DHZ Pitpro Dirt Pit Bikes, Trail Bikes Parts, HIAORS 1Pcs 2.75/3.00-21 Inner Tube for Kawasaki KLR650 Off Road Motorcycle with Straight Valve Stem 90/80-21, 90/90-21 #adHIAORS #ad
- Package includes: 1pcs Inner Tubes. This inner tubes fit 2. 75/3. 00-21 front wheel as well as 90/80 - 21, 90/90 - 21, 100/80 - 21. Please check the Size Before You Buy It. Suitable for off-road chinese dirt bikes, pit bikes, trail bikes such as Thumpster Atomik DHZ Pitpro in 150cc 250cc.
4. HIAORS #ad
Trail Bikes Pack of 2, HIAORS 2.75/3.00-21 80/100-21 Off Road Motorcycle Replacement Inner Tubes with Staight Valve Stem for 90/80-21, 90/90-21, Pit Bikes, 100/80-21 Chinese Dirt Bikes #adHIAORS #ad
- Suitable for off-road chinese dirt bikes, pit bikes, trail bikes such as Thumpster Atomik DHZ Pitpro in 150cc 250cc. This inner tubes fit 2. 75/3. 00-21 front wheel as well as 90/80 - 21, 90/90 - 21, 100/80 - 21. Please check the Size Before You Buy It. Package includes: 2pcs Inner Tubes.
5. FVRITO #ad
FVRITO 2.75/3.00-21 80/100-21 Inner Tube for CR250R 450R 500R XR 200 250 Yamaha YZ125 TTR230 TTR250 Suzuki RM125 Kawasaki klx250s Off-road Motorcycle Pit Dirt Trail Bike Heavy Duty 90/90-21 90/80-21 #adFVRITO #ad
- For yamaha hond* suzuki kawasaki pit bike, coolster, thumpstar, atomik, kayo, stomp, braaap, taotao, such as SSR, gpx, IMR, Apollo, ycf, Lifan, Piranha, SDG, yx, Roketa, BSE, Pitster Pro, and other chinese brand pit bike, dhz, Ect.
Made from premium rubber and built to last: Made with premium-quality, these inner tubes are highly durable and ideal for home, heavy-duty rubber, professional and commercial / industrial use. Straight stem Red Aluminum Stem Valve cap.
Package include: 2 x inner tube, 1x valve core wrench, 2 X Red Stem Valve caps, 2 X Black Stem Valve caps, 5 X brass Valve Stem Cores.2. 75/3. 00-21 inner tube fit 17" inch rim off-road motorcycle pit dirt trail bike motocross, compatible with | 2. 75-21 | 3. 00-21 | 2. 75/3. 00-21 | 80/100-21 | 90/90-21 | 70/100-21 |80/100-21 |100/80-21 |90/80-21 |, please check for the details and size to make sure this part will fit.
6. Power Sports Galaxy #ad
PSG MOTO 80/100-21 2.75/3.00-21 Tube 110/90-18 4.10/3.5-18 Inner Tubes for Dirt Pit Bike Motorbike Front Rear Inner Tubes Heavy Duty 2 Pack #adPower Sports Galaxy #ad
- Please check if the inner tube is sealed by putting them in the water before installation, it means they are damaged. Ultra-heavy duty tubes: made from 100% natural butyl rubbers; each tube is a super-strong 60% thicker than any other tube; puncture-resistance and pinch-resistance, available in light, standard and heavy-duty street and off-road applications.
80/100-21 tube fits on these tires: 80/90-21, 120/80-18, 130/80-18, 4.1
10-18, 300/325-21, 110/100-18, 110/90-18 tube fits on these tires: 4.00/4. 50-18, 275/300-21, 130/70-18, 2.75/3. 00-21, 110/90-18, 80/100-21, 120/90-18, 350/400-18.1 pack 80/100-21 2. 75/3. 00-21 inner tube and 1 pack 110/90-18 4. 10/3. 5-18 inner Tube Replacement. What you get: 1x 80/100-21 2. 75/3. 00-21 inner tubes, 1x 110/90-18 4. 10/3.
7. Kenda #ad
Kenda 2.75/3.00-21 Motorcycle Tube with Straight TR-4 metal valve stem, 2-Pack #adKenda #ad
- Contains: 2 motorcycle 2. 75/3. 00-21 size Tubes. Standard thickness tube. Premium quality butyl rubber inner tube. Fit type: Universal Fit. Straight tR-4 metal valve stem.
8. MMG #ad
TR4 Straight Valve Stem, SET OF TWO: Motorcycle Inner Tube 2.75/3.00-21 | 80/90-21 | 80/100-21 #adMMG #ad
- Set of two motorcycle inner tube 2. 75/3. 00-21 tr4 valve Stem. Tr4 valve stem: straight stem, Round Shape to fit on rims with a round valve base.
Unbeatable performance and value. Heavy duty durable valve stem. Fits on these tube type tires: 2. 75/3. 00-21, 90/90-21, 80/90-21, 80/100-21, 90/80-21, 100/80-21.
9. IRC #ad
IRC Standard Motorcycle Tube 80/100-21 HEAVY DUTY #adIRC #ad
- Two to three times thicker than standard tubes, IRC heavy-duty tubes are incredibly durable, abrasion-resistant and feature great impact-absorption. Impressive joint and valve strength; for Valve Stem Types see above.
|Manufacturer||IRC Tires #ad|
10. MMG #ad
Fits on 80/90-21 80/100-21, Off Road Motorcycle Tire Inner Tube, MMG Inner Tube 2.75/3.00-21, TR4 Staight Valve Stem #adMMG #ad
- Tr4 valve stem: straight stem, Round Shape to fit on rims with a round valve base. Heavy duty durable valve stem. Motorcycle inner tube 2. 75/3. 00-21 tr4 valve Stem. Fits on most 2. 75-21, 90/90-21, 80/100-21, 300-21 and others 21" Rim Size. Unbeatable performance and value.