Triumph 500 650 750 Twin Gearbox Mainshaft Bearing PN# 21-0357 S35-7 60-3552 D3552 57-3621 T3621

This bearing fits in the inner gearbox cover and carries the mainshaft on the right hand side of both unit and pre-unit Triumph twins. Will fit Triumph T100 1939-1959, Tiger 90, T110, T120 pre-units and unit Bonneville, Tiger, Trophy, T120R, TR6, TR6R, TR6T, 6T, T140, TR7, etc. From 1963 to 1982, all unit construction 4 and 5-speed 650 & 750 twins. Precision made in Japan.

For the 4-speed high gear bearing, PN#’s T448, 57-0448, D3556, 60-3556 click here.

For the 5-speed high gear bearing, PN# 60-4100 click here.

For the layshaft needle roller, PN# 57-1614 (T1614) click here.

For the layshaft needle roller, PN # 57-1606 (T1606) click here.

We also offer a complete unit 650 4 speed gearbox rebuild kit click here.

For more Triumph gearbox spares click here.

Please note: Due the nature of the product, we unfortunately do not accept returns on bearings, service tools or electrical components. Please be confident about your purchase before ordering. If you have questions, please contact us.