-13.33% Shipped the 16/06/2026 Inner tubes Inner Tube – 21 TRIAL Valve TR4 – 2.75-21 – Special Trial MICHELIN 12.16410.000 €22.88 €26.40 OEM Michelin Offroad inner tube for front wheel, 21 inch, TR4 valve, 2.75-21, Special Trial edition. Engineered for optimal compatibility and reliability on Trial bikes.Exact 2.75-21 sizingTR4 valve designed for front wheel useSpecial Trial version, race-ready Add to cart