Front inner tubes play a critical role in steering stability, traction, and overall ride control. Whether you’re riding minis, motocross, enduro, or ADV, choosing the right front tube ensures proper tire support and reduces the risk of pinch flats. Front tubes are sized to match common tire fitments like 70/100‑17, 70/100‑19, 80/100‑21, and 90/90‑21, with options ranging from standard to heavy‑duty and ultra heavy‑duty constructions. A properly matched front tube keeps your bike predictable, planted, and ready for any terrain.

Front Tube Size Reference

• 2.50/2.75‑10 → 50cc minis

• 60/100‑14 → 65cc

• 70/100‑17 → 85cc small wheel

• 70/100‑19 → 85cc big wheel

• 80/100‑21 → Full‑size MX/Enduro

• 90/90‑21 → ADV / Off‑Road