Tubes

Warp 9 2mm Natural Rubber Motorcycle Tubes Our own tubes, built to our spec for spoked dirt bike, supermoto and e-moto wheels. Every tube has a 2mm natural rubber wall and a TR-4 valve stem. That's the wall thickness most brands only offer in their heavy-duty line. What makes them different 2mm natural rubber wall. Thicker than a standard tube for better puncture resistance, pinch-flat protection and heat resistance. TR-4 valve stem topped with a black Warp 9 valve cap. Size printed on the tube. The Warp 9 logo and tube size are printed right on the rubber, so you know what's in the wheel without guessing. Color-coded bags. Each tube comes in its own bag, color coded by size, with the size, part number and barcode on the label. Easy to grab the right one off the shelf. Warp 9 vs. Them Warp 9 Brand A Brand B Wall thickness 2 mm 2 mm 3 mm 17" street and supermoto sizes (110/70, 140/70) Yes No No Price $10 $14 to $17 $36 A heavy-duty 2mm wall for a lot less, in the 17" street and supermoto sizes the big brands skip. Plus every Warp 9 tube has its size printed on the rubber, comes in a color-coded bag and wears a Warp 9 valve cap. Size chart Pick the tube by rim diameter first, then by the tire size printed on your sidewall. Rim Position Tube size Fits tire sizes Bag color SKU 21" Front 3.00-21 80/100-21, 90/100-21, 2.75-21 Red W9-TUBE21F 19" Front (e-moto) 2.75-19 70/100-19, 2.75-19 Blue W9-TUBE19F 19" Rear 4.50-19 110/90-19, 120/80-19, 120/90-19 Yellow W9-TUBE19R 18" Rear 3.50-18 90/100-18, 100/100-18 Green W9-TUBE18ER 18" Rear 4.50-18 110/100-18, 120/90-18, 120/100-18 Black W9-TUBE18R 17" Front 3.50-17 110/70-17, 120/70-17 Orange W9-TUBE17F 17" Rear 4.50-17 140/70-17, 150/60-17, 160/60-17 Purple W9-TUBE17R 16" Rear (e-moto) 3.50-16 90/100-16, 3.00-16 Blue W9-TUBE16R Good to know Match the tube to the tire, not the bike: a 19" front and a 19" rear take different tubes. Fit a fresh rim strip over the spoke nipples when you change a tube, and add rim locks if you run low pressure off-road.